2013 Lake George Lake Steward Program Abridged Report

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Lake George Lake Steward Program

End of Season Report 2013 Key Findings Abridged Version

The Lake George Association

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Lake George Lake Steward Program End of Season Report 2013 Key Findings Abridged Version

The Lake George Association Written By Kristen Rohne

Data Collection By: Jocelyn Barber, Layne Darfler, Nick Ferranti, Guthrie Hatton-Bullock, Dillon Lafferty, Alex LaFrance, Taylor Lee, Kate Littrell, Matthew Lynskey, Jamie Patchett, Jessie Patchett, Marion Rachelle Snow, Maranda Wells

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Funding for the 2013 Lake George Lake Steward Program provided by the Lake Champlain Basin Program, the Lake George Park Commission through the Environmental Protection Fund, and the Lake George Association through the Helen V. Froehlich Foundation.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Table of Contents Abstract…………………………………………………………………………………………………………………………….……...

Introduction and Background……………………………………………………………………………………………….…..

Program Description……………………………………………………………………………………………………………..…..

Lake Steward Staff……………………………………………………………………………………………………………..……..

Quality Assurance Project Plan………………………………………………………………………………………..………..

Key Findings……………………………………………………………………………………………………………………………...

5 6 9 11 12 13

Appendices 27 A: List of all 2013 previously visited waterbodies…………………………………………………………...

30 B: List of all samples removed from boats…………………………………………………….………………..

35 C: Summary of lake steward key findings for 2008-2013………………………………………………..

36 D: Summary of lake steward data for 2008-2013 by launch………………………………………...…

38 E: Data collection form…………………………………………………………………………………………...……

F: Clean, Drain, Dry rack card ………………………………………………………………………………………… 39 This is an abridged version of the report. The entire report, with data summarized for each separate launch location, is available online at www.lakegeorgeassociation.org or by contacting the LGA at 518-668-3558.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

The Lake George Association PO Box 408 Lake George, NY 12845 Phone: 518-668-3558 www.lakegeorgeassociation.org

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Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

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Abstract Lake George is located in northern New York, in the Southeastern corner of the Adirondack Park. The Lake is used year round by local residents and tourists for many recreational activities, but the Class AA-Special rated Lake is also still used as drinking water. Water quality in Lake George is threatened by various human activities including the introduction of aquatic invasive species into the Lake through recreational boating and other related activities. To help protect the Lake from the introduction and spread of invasive species that could negatively alter the lake’s ecosystem, shoreline property values, and the region’s tourism-driven economy, the Lake George Lake Steward Program was started in 2006. The main goal of the program is to prevent the introduction of invasive species into Lake George and to educate boaters about invasive species spread prevention. The lake stewards inspect boats at high traffic launches around the Lake and collect quantitative data on the number of boats and last waterbody boats visited within two weeks before entering Lake George. The stewards inspect all boats for aquatic plant and animal specimens and collect anything that they find. Data and specimens are collected from boats both launching and being retrieved from the Lake.

The data gathered will help to determine aquatic invasive species spread pathways between other regional waterways and Lake George.

Over the 2013 season, the Lake George lake stewards inspected 7,087 boats. Boaters were asked what the last body of water their boat had been in during the past two weeks. The total number of waterbodies visited within two weeks of overland transport to Lake George was 163 unique waterbodies located in 13 different states throughout the United States and 1 Province in Canada. Lake George itself was the most common recorded previous waterbody visited with 3,037 boats; the next most frequent waterbody was the Hudson River at 91 boats. Boaters were most frequently coming from lakes in New York State (3,449). There were 899 (or 13%) boats that can be considered ‘at risk’ boats for transporting aquatic invasive species, meaning they were known to be in another body of water other than Lake George within two weeks prior to launching in Lake George. From the six launches that lake stewards were stationed at, 213 aquatic organism samples were collected from 153 boats and trailers launching and retrieving, and 83 samples were identified as an invasive species. One percent of the boats inspected were found to be transporting an invasive species. Five different invasive species were identified: Eurasian watermilfoil, curly-leaf pondweed, water chestnut, zebra mussels, and quagga mussels. Approximately 86% of boaters reported having previously interacted with a lake steward. Spread prevention measures were reported being taken by 47% of boaters.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

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Introduction and Background Introduction The Lake Steward Program began as a two year pilot program in 2006 through the Lake George Watershed Coalition’s Invasive Species Task Force. In 2008 the Lake George Association assumed management of the program. The Lake Steward Program aims to prevent the introduction of aquatic invasive species by providing education and outreach to boaters regarding spread prevention. The program strives to perform boat inspections on all vessels both entering and leaving Lake George at launches while stewards are on-duty and to gather quantitative data which can be used to determine pathways of aquatic invasive species spread between Lake George and other regional waterbodies.

Program Sponsors The Lake George Association (LGA): The LGA’s mission statement is “Working together to protect, conserve, and improve the beauty and quality of the Lake George Basin.” Since its inception in 1885, the LGA has evolved to incorporate and address the changing needs of the Lake George environment. The LGA advocates a reasoned, balanced approach to the management and conservation of the Lake George watershed through education, remediation, advocacy, and broad-based community involvement. The goal is to ensure the long-term stability of the lake’s exceptional water quality and the economic viability of the region.

The Lake George Park Commission (LGPC): Authorized by New York State, the LGPC is responsible for overseeing and managing the unique resources of “the Lake George Park.” The Commission’s programs fill critical gaps to ensure the lake’s protection and encourage cooperation among the many public and private entities whose common goal is the lake’s preservation.

The Lake Champlain Basin Program (LCBP): The LCBP works in partnership with government agencies from New York, Vermont, and Quebec, private organizations, local communities, and individuals to coordinate and fund efforts which benefit the Lake Champlain Basin's water quality, fisheries, wetlands, wildlife, recreation, and cultural resources.

Lake George and its Watershed Lake George is located in northern New York, in the southeastern corner of the Adirondack Park. It is a 32 mile long, oligotrophic lake formed by earthquakes and glaciers. The lake is classified as AA-Special by New York State, which means one of its best usages is as a drinking water supply, and it is used as such by many people around the lake.

The maximum depth of the lake is 196 feet, with an average depth of about 70 feet. The widest part of the lake is about two miles across, while the average width is 1.33 miles. There are over 170 islands dotting the lake’s surface. Lake George flows from the south to the north and drops 226 feet into Lake Champlain through the LaChute River in Ticonderoga.

Streams provide the lake with 55 percent of its water; the rest comes from precipitation directly on the lake’s surface and groundwater. There are 141 streams in the watershed, but eight major streams providing about two-thirds of the total stream flow into the lake.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

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Invasive Species Background An invasive species is any species that is not native to the ecosystem under consideration; and whose introduction does or is likely to cause economic or environmental harm or harm to human health. Invasive species are threatening ecological communities and impacting the economy nationwide. They are estimated to cost the United States almost $120 billion annually in environmental losses and damages (Pimental et al 2005). Invasive species are among the greatest threats to biodiversity, second only to direct habitat loss in many locations. There are both terrestrial and aquatic invasive species that can disrupt land and water ecosystems. Within the waterbodies of the Adirondack Park, which includes part of the Lake Champlain Basin, invasive species are a top threat to biodiversity and water quality. Aquatic invasive species disrupt the aquatic food webs and habitats, out-competing native species and altering the ecological function of lakes and rivers.

Currently, Lake George is known to have six aquatic invasive species: Eurasian watermilfoil (Myriophyllum spicatum), curly-leaf pondweed (Potamogeton crispus), zebra mussels (Dreissena polymorpha), Asian clam (Corbicula fluminea), spiny water flea (Bythotrephes longimanus), and Chinese mystery snail (Bellamya chinensis).

Above: Timeline of recorded introductions of aquatic invasive species to Lake George. At Right: Although Lake George has only a handful of aquatic invasive species, nearby waterways are much more infested. Lake Champlain is documented as having 49 non-native species, the Saint Lawrence River 87, the Hudson River 122, and the Great Lakes with 184. All of these waterbodies are within close proximity to Lake George and boats are easily trailered between them.

Pimental et al. 2005. Update on the environmental and economic costs associated with alien-invasive species in the United States. Journal of Ecological Economics. 52:3 267-416.

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Vectors of Spread Aquatic invasive species can be transported through a variety of ways. Many arrive in the United States from Europe or Asia in the ballast water of large ships. Once here, they spread from waterbody to waterbody by boats and other recreational equipment. Aquarium releases, bait and illegal stocking, and releases of exotic species as food sources are other potential pathways of spread. Wind, wildlife, and connected waterways can also move species around.

Much of the ongoing spread of aquatic invasive species (AIS) to inland waters throughout North America can be attributed to the overland movement of small-craft boats . from Rothlisberger et al 2010 Multiple studies have shown that boats and recreational equipment are among the main vectors of spread. This high risk pathway is also one that we have the ability to do something about. While it can be intentional, often times the spread of invasives is unintentional, with the boater not realizing that there are plants or other species attached to the hull of the boat, entangled in the prop, or caught on part of the trailer or other equipment, or that moving these species around will cause a problem.

Microscopic organisms such as zebra mussel veligers or viruses/diseases can be carried in bilge water, live wells, or bait buckets and never seen.

Translocation of organisms by boaters can be intentional, but is often unintentional, with organisms inadvertently carried in bilge water, live wells, and bait buckets.

Organisms can also be entrained on boat exteriors, e.g., entangled on propellers & trailers, attached to other entangled organisms.

Thus, every time a boat is transported overland after use in an invaded waterway, there is the possibility that it will transfer AIS to uninvaded waterways. from Johnson et al. 2001 Studies have linked the overland transport of boats to the spread of many well-known invasives, including the spiny water flea, Eurasian watermilfoil, zebra and quagga mussels. When there isn’t time for a boat to be thoroughly dried, visual inspection and hand removal is fairly effective at removing plant fragments and other visible hitchhikers, but small-bodied or microscopic invaders are most effectively removed with a high pressure, hot water boat decontamination in between waterways. Due to the time and expense of such decontamination procedures, these actions are usually only found as part of mandatory programs, while visual inspections and hand removal are more commonly found as part of voluntary programs.

John D. Rothlisberger, W. Lindsay Chadderton, Joanna McNulty, and David M. Lodge. 2010. Aquatic Invasive Species Transport via Trailered Boats: What is Being Moved, Who is Moving it, and What can be done. Fisheries 35:3 121-132.

Johnson, L.E., Ricciardi, A., and Carlton, J.T. (2001). Overland dispersal of aquatic invasive species: a risk assessment of transient recreational boating. Ecological Applications, 11, 1789-1799.

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Program Description The Lake Steward Program is an aquatic invasive species education and spread prevention program. Lake stewards are hired for the boating season to inspect boats at various boat launches around Lake George.

Stewards look for and remove plants and animals attached to boats and trailers and educate boaters on how to prevent the spread of invasive species within the Lake and to other lakes. In addition, lake stewards collect data about the vessels entering and exiting the Lake. The program seeks to help contain the spread of the six aquatic invasive species already present in Lake George and also helps prevent new invasive species from being introduced into Lake George.

Lake George has over 100 different launch sites, although many of these are small private homeowner and association launches. It is not possible for the lake stewards to cover all of the areas all of the time; therefore they strategically work at high traffic launches located around the Lake. Lake stewards were stationed at six launches around the Lake during the 2013 boating season. These locations included Mossy Point in Ticonderoga, Rogers Rock in Hague, Hague Town Launch in Hague, Norowal Marina in Bolton Landing, Million Dollar Beach in Lake George, and Dunham’s Bay in Lake George. Days and times of lake steward coverage differed by launch.

The lake stewards helped stop aquatic invasive species introductions and educated about spread prevention by informing boaters about the ecological threats of invasive species and provided take home, outreach materials. Stewards helped stop the introduction and transport of invasive species via boats and trailers by visually inspecting boats and trailers and removing any plant or animal material found.

Lake stewards survey boaters and collect information to support overland aquatic invasive species spread prevention. For each boat inspected the following information is collected: whether the boat is launching or retrieving, boat type, state of registration, LGPC registration, whether or not the boat was inspected, if aquatic organisms were found and if so the species identification, what spread prevention methods were taken, and the last body of water visited in 2 weeks.

The Lake Steward Program is a crucial step in protecting the water quality of Lake George and preventing the spread of invasive species between waterbodies throughout New York and the Northeast.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Lake Steward Training Thirteen lake stewards were hired throughout the boating season to work at six high priority boat launch sites on Lake George. All stewards completed training in order to be equipped with the necessary tools and information to confidently and accurately complete their duties.

Lake steward trainings were held on May 2, May 20, June 25, and August 15, 2013. Many of the lake stewards participated in a regional training at Paul Smith’s College (PSC) on May 21 and 22, 2013 where representatives from the New York State Department of Environmental Conservation (NYSDEC), the Adirondack Park Agency (APA), PSC’s Adirondack Watershed Institute, the Adirondack Park Invasive Plant Program (APIPP) and the Lake Champlain Basin Program (LCBP) educated stewards on plant identification, interpretation techniques and data collection.

All trainings included organizational orientation, introduction to Lake George (including natural resources, partners/local contact, relationship with law enforcement, and issues of concern), AIS identification and data collection protocol, boater engagement and interpretation techniques, and site visits. Throughout the first days of duty for all stewards, the stewards worked in pairs to become comfortable at the launches.

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Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Lake Steward Staff Kristen Rohne: Program Coordinator Kristen is the Education Coordinator for the Lake George Association. She manages and implements LGA's current education programs for area schools, such as the Floating Classroon, in order to create future stewards of Lake George. She joined the LGA in 2009 with a Bachelors degree from SUNY Fredonia in environmental science.

The following individuals were hired as lake stewards during the 2013 season: Jocelyn Barber, from Ticonderoga, NY Layne Darfler, from Hudson Falls, NY Nick Ferranti, from Queensbury, NY Guthrie Hatton-Bullock, from Putney, VT Dillon Lafferty, from Hague, NY Alex LaFrance, from Ticonderoga, NY Taylor Lee, from North Haledon, NJ Kate Littrell, from Queensbury, NY Matthew Lynskey, from North Greenbush, NY Jamie Patchett, from Hague, NY Jessie Patchett, from Hague, NY Marion Rachelle Snow, from Rensselaer, NY Maranda Wells, from Putnam, NY

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Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Quality Assurance Project Plan (QAPP) In order to ensure that steward and greeter programs are coordinated in the Lake Champlain Basin, all Lake Champlain Basin Program (LCBP) grants issued that support steward programs require a QAPP that sets standards for the type of information that is collected and how it is collected, recorded and stored. A standard Quality Assurance Project Plan (QAPP) ensures that survey information from the different steward programs in the basin is comparable. LCBP-funded steward programs adhere to this QAPP by providing information specific to their program for review by LCBP staff.

The Lake George Lake Steward Program adhered to its guidelines and provided specific project information that was amended as a cover page to the QAPP and reviewed by the LCBP Project Officer before approval. Kristen Rohne, the program coordinator, was also the program QA Officer.

As required by the QAPP, this report provides a summary of results from the boat launch steward program surveys containing: the number of steward to boat-launch user interactions, the number of aquatic invasive species intercepted, and summary information on the vessel state of origin, last body of water visited, and possible AIS spread prevention measures taken by users. Additional data of interest was also collected in addition to the mandatory data collection points.

The data used in this report has been reviewed for logical consistency and coding errors as identified in appropriate standards. Any discrepancies between field survey forms and electronic data have been resolved and final datasets have been compared with original source information for consistency.

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Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

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Key Findings Number of Boats Lake stewards inspected 7,087 boats during the 2013 season.

Norowal Marina had 2,990 boats recorded which was the greatest number of boats out of the covered launches. Mossy Point had the second most boats recorded with 1,816, then Rogers Rock with 1,124; followed by 620 at Dunham’s Bay, 443 at Hague Town Launch and 94 at Million Dollar Beach (Table 1).

Launch Dunham's Bay Hague Town Million Dollar Beach Mossy Point Norowal Marina Rogers Rock

Some of the launches had more boats recorded than others, however the lake stewards spent different amounts of time at different launches. Therefore the total number of boats inspected Total is not necessarily an accurate measure of overall launch activity.

Number of Boats 620 443 94 1,816 2,990 1,124 7,087

Table 1: Summary of boats recorded by lake stewards at each launch during 2013.

The stewards were stationed at launches from May 3rd to October 13th.

Lake stewards worked at Dunham’s Bay for 59 days during the season, 78 days at Hague Town Launch, 10 days at Million Dollar Beach, 126 days at Mossy Point, 101 days at Norowal Marina, and 95 days at Rogers Rock (Table 2).

Calculating the average number of boats inspected per day provides a more accurate representation of the boat traffic at various launches (Figure 1).

Norowal Marina had the most boat traffic averaging 30 boats per day followed by Mossy Point with 14 boats Figure 1: Average number of boats recorded per day by lake stewards at the six per day. Rogers Rock and Dunham’s Bay launches. Norowal Marina had the most boat traffic averaging 30 boats per day. had similar boat traffic with an average of 12 and 11 boats per day respectively.

Launch Location

Dates of Coverage General Hours of Coverage

Dunham’s Bay

May 25– Aug 16

Total Days

Wed– Sun 6am-2:30pm

59

Hague Town Launch May 24– Sep 1

Mon-Wed 9am-4pm, Thurs-Sun 7am-5pm

78

Million Dollar Beach May 4– May 19

Thurs-Sun 8am-4:30pm

10

Mossy Point

May 3– Oct 12

Mon-Tues 8am-4:30pm, Wed-Sun 7am-8pm

126

Norowal Marina

May 3– Oct 13

Wed– Sun 8am-8pm

101

Rogers Rock

May 25– Sep 7

Sun– Sat 8am-4:30pm

95

Table 2: General lake steward coverage on Lake George during the 2013 season.

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Where are boats coming from?

Lake stewards asked boaters what was the most recent body of water their boat had been in within the last two weeks. There were 3,936 boats that reported having been in a waterbody within two weeks.

Boaters responded with 163 unique waterbodies located in 13 different states throughout the United States and 1 Province in Canada. Lake George itself was the most common previously visited waterbody with 3,037 visits within two weeks prior to launching. The Hudson River was the second most common response for a previous waterbody with 91 responses followed by Lake Champlain with 80 responses and Figure 2: Most common previously visited waterbodies for all launches in 2013. There Saratoga Lake and the Atlantic were 91 boats that had been in the Hudson River within two weeks prior of launching in Lake George.

Ocean both with 67 responses (Figure 2). See a full list of previously visited waterbodies in Appendix A. Boaters most frequently had visited waterbodies located in New York State prior to launching in Lake George. A total of 3,449 boaters responded with a waterbody in New York State that they had been in the past two weeks (Figure 3). Eightyeight percent of those boats had last been in Lake George. Some boaters reported that they had not been in a waterbody in the past two weeks.

Boaters also commonly responded with waterbodies in New Jersey, which had 81 boaters previously visit a waterbody located there.

Lake stewards recorded 40 boaters that had visited a waterbody in Figure 3: States with waterbodies visited within two weeks prior to launching in Lake Connecticut within two weeks prior George. There were 3,449 boats that had previously been in a waterbody located in New York State. to launching in Lake George.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Maps showing waterbodies visited within two weeks prior to launching at Lake George

Figure 4: Lake stewards asked boaters prior to launching where their boat had been within the last two weeks and the total response was 163 unique waterbodies in 13 different states throughout the United States and 1 Province in Canada. Some locations were not state specific such as the Atlantic Ocean, Lake Champlain, Great Lakes, and various rivers.

Figure 5: The enlargement to the right shows prior Northeast waterbodies visited within 2 weeks of launching in Lake George.

Boaters most frequently had visited lakes in New York State prior to launching in Lake George.

There were 3,449 boats that had been in a waterbody located in New York State within the prior two weeks. Eighty-one boaters responded with waterbodies in New Jersey. Lake stewards recorded 40 occasions in which a boater said they had last visited a waterbody in Connecticut within two weeks prior to launching in Lake George.

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Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Map showing previously visited waterbodies in New York State within two weeks prior to launching at Lake George

Figure 6: The above map shows the locations of the 68 waterbodies in New York State that were visited within two weeks prior to boaters launching into Lake George.

Table 3: The list below gives the corresponding waterbody name for the 68 New York State waterbodies numbered on the above map.

1 Allegheny Reservoir

11 Cossayuna Lake

21 Glen Lake

31 Lake Champlain

41 Loon Lake

51 Pine Lake

61 Skaneateles Lake

2 Augur Lake

12 Cranberry Lake

22 Great Sacandaga Lake

32 Lake George

42 Merrick Bay

52 Piseco Lake

62 Snyders Lake

3 Ballston Lake

13 Cross Lake

23 Greenwood Lake

33 Lake Kanawauke 43 Mohawk River

53 Putnam Pond

63 Summit Lake

4 Brant Lake

14 Cuba Lake

24 Hadlock Pond

34 Lake Luzerne

44 Niagara River

54 Round Lake

64 Swinging Bridge Reservoir

5 Burden Lake

15 Delaware River

25 Hinckley Reservoir

35 Lake Mahopac

45 Oneida Lake

55 Sacandaga Lake 65 Trout Lake

6 Canadarago Lake

16 DeRuyter Reservoir 26 Hudson River

36 Lake Ozonia

46 Onondaga Lake

56 Saranac Lake

66 Upper Saranac Lake

7 Canandaigua Lake

17 Eagle Lake

27 Indian Lake

37 Lake Placid

47 Oscawana Lake

57 Saratoga Lake

67 Whaley Lake

8 Cayuga Lake

18 Eighth Lake

28 Irondequoit Bay

38 Lake Pleasant

48 Owasco Lake

58 Schroon Lake

68 White Lake

9 Champlain Canal

19 Erie Canal

29 Kinderhook Lake

39 Lincoln Pond

49 Oyster Bay Harbor

59 Schroon River

10 Copake Lake

20 Feeder Canal

30 Kiwassa Lake

40 Long Lake

50 Paradox Lake

60 Seneca Lake

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Number of Samples Removed From Boats After interacting with boaters, lake stewards would request to take a visual inspection of the trailer and boat for any plant or animal species. Boaters were encouraged to look along with the stewards so that they could learn how to inspect the boat themselves.

Lake stewards inspected 7,087 boats being either launched or retrieved from Lake George. If an aquatic species was found on a trailer or boat the lake steward would remove it and put it in a sealed bag with the boat registration number, date, and launch location written on the front. Aquatic species were then identified by LGA staff. A single boat could have had more than one plant or animal species removed which resulted in a different number of total samples than number of boats found with plant and animal material.

Each species found on a boat is counted as a sample.

For all six of the launches combined, a total of 213 samples were removed from 153 boats or trailers before launching or after leaving Lake George (Table 4). See a full list of samples removed from boats in Appendix B. Launch

Boats with samples

Total samples Boats with invasive Total invasive species removed species samples samples removed

Dunham's Bay

2

2

0

0

Hague Town

3

3

1

1

Million Dollar Beach

1

2

1

1

Mossy Point

30

44

18

22

Norowal Marina

90

132

46

48

Rogers Rock Total

27 153

30 213

11 77

11 83

Table 4: Summary of all samples removed from boats during 2013. A total of 213 samples were removed from 153 boats. A total of 83 samples were identified as an invasive species.

Out of the 213 samples removed from boats, 83 were identified as an aquatic invasive species, making 39% of all samples removed invasive. Invasive species were removed from boats both launching and retrieving from Lake George. Prior to launching, 80 invasive species samples were removed from boats and 3 were removed after retrieval (Table 5).

Launch

Total samples Invasive species removed prior to samples removed launch prior to launching

Total samples removed after retrieval

Invasive species samples removed after retrieval

Dunham's Bay

0

0

2

0

Hague Town

3

1

0

0

Million Dollar Beach

2

1

0

0

Mossy Point

41

21

3

1

Norowal Marina

130

48

2

0

Rogers Rock Total

21 197

9 80

9 16

2 3

Table 5: Summary of samples removed from boats prior to launching or when retrieving during 2013. Prior to launching 197 samples were removed from boats. Of those samples, 80 were identified as an invasive species.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Invasive Species Removed Out of the 213 total samples removed from boats, 83 were identified as an invasive species.

There were five species identified that are considered an invasive species: Eurasian watermilfoil, curly-leaf pondweed, water chestnut, zebra mussels, and quagga mussels.

Invasive species samples removed included 59 Eurasian watermilfoil, 11 curly-leaf pondweed, 7 water chestnut, 5 zebra mussel, and 1 quagga mussel (Figure 7). Samples were removed from boats launching and retrieving from Lake George.

There were 80 invasive species samples removed from boats prior to launching into Lake George: 58 Eurasian watermilfoil, 9 curly-leaf pondweed, 7 water chestnut, 5 zebra mussels, and 1 quagga mussels (Figure 8). Lake stewards removed 3 Figure 7: Aquatic invasive species removed from boats by lake samples of invasive species from boats being stewards in 2013. Lake stewards removed 59 samples of Eurasian retrieved from Lake George: 1 Eurasian watermilfoil. watermilfoil and 2 curly-leaf pondweed (Figure 9). Norowal Marina lake stewards removed the largest quantity of invasive species samples from boats before they were launched.

Figure 8: Invasive species removed from boats prior to launching in 2013. A total of 58 samples of Eurasian watermilfoil were removed from boats prior to launching into Lake George.

Figure 9: Invasive species removed from boats after retrieval in 2013. After retrieval, 2 samples of curly-leaf pondweed were removed from boats and 1 sample of Eurasian watermilfoil.

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Possible Sources of Invasive Species Introductions into Lake George The lake steward program addresses overland transport pathways of aquatic invasive species. Possible sources of invasive species are the waterbodies trailered boats have most recently been in within the prior two weeks of launching in Lake George. The possible sources listed in this report are only for invasive species removed from boats prior to launching into Lake George. The waterbodies are only possible sources because the invasive species found may not be present in that waterbody and had attached to the boat in a previous waterbody. However, by examining the possible sources of the invasive species removed from boats that were about to be launched in Lake George, it can be estimated where the possible invasive species “hot spots” Figure 10: Possible sources of curly-leaf pondweed for all six launches in are. This information can help regional efforts to 2013. On four occasions a lake steward found curly-leaf pondweed on a prioritize spread prevention strategies. launching boat that had been out of water for more than two weeks.

The last waterbody visited was only recorded if the boat had been in that waterbody within two weeks prior to entering Lake George, therefore some of the samples collected do not have a waterbody associated with them. When the last water body visited is correlated with the sample, 14 waterbodies are possible sources for the spread of invasive species into Lake George. There were 13 possible waterbody sources of Eurasian watermilfoil, 5 for curly-leaf pondweed, 4 for water chestnut, and 3 for zebra mussels (Figures 10-13). There were no possible sources for quagga mussels since the one sample found was from a boat that had been out of water for more than two weeks.

Figure 11: Possible sources of Eurasian watermilfoil for all six launches in 2013. There were nine occurrences in which a lake steward removed Eurasian watermilfoil from a boat prior to launching that had been in Lake Hopatcong, NJ within two weeks prior.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

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Figure 12: Possible sources of water chestnut for all six launches in 2013.

Three samples of water chestnut came from boats that had not been in a waterbody within two weeks.

Figure 13: Possible sources of zebra mussels for all six launches in 2013.

Two samples of zebra mussels found on boats prior to launching had most recently been in Lake George, NY within the prior two weeks.

At Risk Boats At risk boats are those boats that are known to have been in a body of water other than Lake George within two weeks prior to their lake steward interaction and launching at Lake George. The two week time is chosen by generalizing the amount of time that aquatic invasive species can live out of water. Some species can live out of water longer than two weeks.

While only one percent of boats inspected were found to be transporting invasive species, thirteen percent of the boats inspected could be considered at risk for transporting aquatic invasive species since they had been in a waterbody other than Lake George within two weeks prior to launching in Lake George.

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Spread Prevention Boaters were asked by the lake stewards what measures they take to prevent the spread of aquatic invasive species. Spread prevention measures include but are not limited to washing the boat, draining the bilge, and inspecting the boat for plants and animals. The lake steward does not list possible spread prevention measures in order to elicit a response from the boater. Lake stewards recorded 47%, or 3,347 boaters that reported having taken one or more spread prevention measures.

Million Dollar Beach had 59%, the highest percentage, of boaters that reported taking spread prevention methods (Figure 14). At Norowal Marina, 58% of boaters reported taking spread prevention measures and at Dunham’s Bay 52% of boaters reported taking spread prevention measures. The most common spread prevention measure that 2,546 boaters reported taking was washing their boat, followed by 869 boaters Figure 14: Percent of boaters that reported taking spread prevention who reported draining their bilge (Figure 15). measures for all launches in 2013. At Million Dollar Beach, 59% of boaters reported taking at least one spread prevention measure.

Figure 15: Summary of spread prevention measures reported being taken by boaters. The most common reported spread prevention measure by boaters at all launches was washing their boat.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

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Is the Boat Dry? In addition to asking boaters what spread prevention measures they have taken, lake stewards asked boaters if their boat was dry including bilges and livewells. A yes response was only recorded by the lake steward if the boater checked all compartments to make sure they were dry.

This question was only asked to launching boaters as boats retrieving would not be dry. This was the second year asking this question. It was added in as an attempt to better ascertain whether a boat would meet a Clean-Drain-Dry requirement which is being considered for future aquatic invasive species programming on Lake Figure 16: Summary of boats being dry for all launches in 2013. The majority George. of boaters checked their boats and confirmed that their boat was dry.

Lake stewards recorded 3,626 out of 6,186 launching boats (59%) as being dry (Figure 16). Sixteen percent of boaters reported that their boat was not dry, nine percent were not asked the question due to time constraints or other reasons, sixteen percent were asked the question but declined to check their bilges and livewells to confirm an answer, and less than one percent of the boaters drained their boat at the launch prior to launching once they determined it was not dry. Those that drained at the launch either had the water collected or were away from the launch area so that the water would not enter the Lake.

Previous Lake Steward Interaction Lake stewards ask boaters whether or not they have previously interacted with a lake steward. This allows the lake steward to adjust their interpretive message to address the information that can be best utilized by the boater. Previous lake steward interaction differed by launch from 62% to 97%, with an 86% overall average during 2013 (Figure 17).

Figure 17: Percent of boaters that reported having had a previous lake steward interaction for all launches in 2013. Mossy Point had the highest percentage of boaters that had a previous lake steward interaction.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Summary of Recreation User Data The lake stewards were able to collect additional information while at the launches working on invasive species spread prevention.

Vessel Types Lake stewards inspected motorboats, personal watercrafts (PWC), sailboats, canoes, kayaks, stand up paddleboards (SUP), and rowboats.

Motorboats made up at least 75% of all vessels at all launches during 2013. Motorboats, PWCs, and kayaks were launched at all launches. A total of 5,975 motorboats, 669 PWCs, 86 sailboats, 71 canoes, 279 kayaks, 5 stand up paddleboards, and 2 rowboats were inspected by lake stewards (Figure 18).

Motor Type Lake stewards recorded if the motorboats had an inboard motor or an outboard motor. Of the 5,975 motorboats inspected, 55% were inboards. Million Dollar Beach, Mossy Point and Rogers Rock had more motorboats with outboard motors than inboard motors (Figure 19).

Figure 18: Summary of vessel types for all launches in 2013. The majority of vessels inspected were motorboats.

Figure 19: Summary of motor type for all launches in 2013. Mossy Point had the largest percentage (56%) of motorboats with outboard motors.

23

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

24

Fishing Boats Lake stewards recorded whether or not the motorboats were fishing boats.

The lake stewards did not ask the boater a question but used their judgment to determine whether or not the boater’s use of their motorboat was to go fishing. Lake stewards determined that 22% of the motorboats inspected were fishing boats. Million Dollar Beach had the highest percentage of fishing boats at 35% (Figure 20).

This data is collected in an attempt to better understand the various users on Figure 20: Percentage of motorboats that lake stewards determined to be a fishing the Lake to help inform discussions for boat at all launches in 2013. Norowal Marina had the lowest percentage of fishing future aquatic invasive species spread boats at 13%. prevention measures on Lake George.

Lake George Park Commission (LGPC) Boat Registration The Lake George Park Commission requires that on Lake George all vessels 18 feet or longer, or any vessel mechanically propelled by a motor of 10 horsepower or greater, must be registered and display a LGPC registration decal. Lake stewards recorded whether or not vessels were in compliance. However, they did not enforce the regulation nor report individuals who were not in compliance.

Overall compliance was 94% at all six Figure 21: Percent compliance with LGPC boat registration at all launches in 2013. launches combined during 2013. The Norowal Marina had 100% compliance. percent of compliance with boat registration varied between launches, from 70% compliance at Million Dollar Beach to 100% compliance at Norowal Marina (Figure 21). The managers at Norowal Marina ensured 100% compliance by informing boaters at the launch to be aware of the requirement and selling boat registrations at the marina. At the other lake steward launches boaters do not have the opportunity to register their boat, therefore they would have had to register it prior to arriving at the launch.

Group Size Lake Stewards recorded the number of people using the boats that they inspected. This number can also be used to estimate how many people the lake stewards interacted with at the boat launches. Group sizes ranged from one to twelve people. In total, the lake stewards interacted with 17,288 people at all six launches combined during 2013.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

25

Conclusion From May 3rd to October 13 of 2013, lake stewards inspected 7,087 boats and had 17,288 boater interactions. Scientific literature has shown that recreational boats and their trailers are high risk vectors for transporting aquatic invasive species. A total of 163 waterbodies spanning 13 states and 1 Province in Canada were visited by boaters within two weeks prior to coming to Lake George during the 2013 season.

Although only one percent of boats were found to have an invasive species sample, thirteen percent of boats that launched were in a waterbody other than Lake George two weeks prior to Lake George. These boats have the potential to introduce new invasive species to the lake. From all six launches combined, 153 boats had samples removed before entering or when leaving Lake George. From the 153 boats, 213 samples were removed and 83 were found to be an invasive species making 39% of all samples removed invasive. Five different species of invasive species were identified out of the samples: Eurasian watermilfoil, curly-leaf pondweed, water chestnut, zebra mussels, and quagga mussels.

2013 was the second year that quagga mussels were collected. The quagga mussels were removed from a boat prior to launch, and this is a species that has not yet found its way into Lake George as far as we know.

This finding shows the importance of not only stopping the spread of new AIS into waterbodies that they are not in, but also stopping the spread of AIS out of already infected waterbodies.

There are steps boaters can take to prevent the spread of invasive species. Boaters are aware of these steps as 47% of the boaters were able to respond with at least one measure they had taken to prevent the spread of aquatic invasive species. Measures boaters responded with included inspecting, washing, and drying their boats as well as draining bilges, livewells, ballast, and bait buckets.

Continuing an education and spread prevention program is critical to protecting Lake George from invasive species. Prevention is the most cost-effective approach to fighting invasive species. Once invasive species have established in a lake, eradication is unlikely and costly.

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Appendices Appendix A: List of all 2013 previously visited waterbodies Appendix B: List of all samples removed from boats Appendix C: Summary of lake steward key findings for 2008-2013 Appendix D: Summary of lake steward data for 2008-2013 by launch Appendix E: Data collection form Appendix E: Clean, Drain, Dry Rack Card

26

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

27

Appendix A: List of all 2013 previously visited waterbodies Waterbodies that boaters responded with when asked “what was the most recent waterbody you have been in within the last two weeks?”

Previous Waterbody

Frequency

Allegheny Reservoir

2

Alum Creek Lake, OH Atlantic Ocean

Previous Waterbody

Frequency

Cranberry Lake, NY

1

1 67

Cross Lake, NY Crystal Lake, CT

1 2

Augur Lake, NY

1

Cuba Lake, NY

1

Ballston Lake, NY

8

Culver Lake, NJ

1

Bantam Lake, CT

2

Cuyahoga River, OH

1

Barnegat Bay, NJ

1

Delaware River

Beltzville Lake, PA

1

DeRuyter Reservoir, NY

1

Blue Marsh Lake, PA

4

Duck Harbor Pond, PA

2

10

Brant Lake, NY

16

Eagle Lake, NY

2

Brome Lake, QC

1

Eighth Lake, NY

1

Burden Lake, NY

3

Erie Canal, NY

1

Canadarago Lake, NY

1

Feeder Canal, NY

1

Canandaigua Lake, NY

1

Gardiner's Bay, NY

1

Candlewood Lake, CT

20

Gardner Lake, CT

1

Cape Cod Bay, MA

1

Glen Lake, NY

14

Cayuga Lake, NY

2

Glen Lake, VT

1

Champlain Canal

1

Great Peconic Bay, NY

1

Charles River, MA

1

Great Sacandaga Lake, NY

Chesapeake Bay

3

Great South Bay, NY

Chittenden Reservoir, VT

2

Greenwood Lake, NY/NJ

Congamond Lakes, MA

3

Hadlock Pond, NY

2

Hampton Ponds, MA

1

Connecticut River

14

26 4 22

Coontoocook Lake, NH

1

Harriman Reservoir, VT

3

Copake Lake, NY

2

Harveys Lake, PA

1

Cossayuna Lake, NY

6

Highland Lake, CT

3

Coventry Lake, CT

2

Highland Lake, NY

1

Cranberry Lake, NJ

1

Hinckley Reservoir, NY

1

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

28

Appendix A continued: List of all 2013 previously visited waterbodies Previous Waterbody Housatonic River, CT Hudson River, NY Indian Lake, NJ

Frequency

Previous Waterbody 3

91 2

Frequency

Lake Ontario

6

Lake Ozonia, NY Lake Placid, NY

1 3

Indian Lake, NY

3

Lake Pleasant, NY

2

Irondequoit Bay, NY

1

Lake Pocotopaug, CT

1

Jordan Lake, NC

1

Lake Quinsigamond, MA

2

Kinderhook Lake, NY

1

Lake Rescue, VT

2

Kiwassa Lake, NY

1

Lake Saint Catherine, VT

5

Lac Achigan, QC

1

Lake Wallenpaupack, PA

10

Lake Anne, VA

1

Lake Winnipesaukee, NH

4

Lake Bomoseen, VT

7

Lake Winnisquam, NH

1

Lake Boon, MA

1

Lake Zoar, CT

2

Lake Carmi, VT

1

Lehigh River, PA

1

Lake Champlain

80

Lincoln Pond, NY

2

Lake Charlevoix, MI

1

Long Island Sound

33

Lake Dunmore, VT

10

Long Lake, NY

1

Lake Erie

3

Long Pond, MA

1

Lake Fairlee, VT

1

Loon Lake, NY

6

Merrick Bay, NY

1

Mohawk River, NY

9

Mullica River, NJ

1

Lake George, NY

3037

Lake Harmony, PA

1

Lake Hopatcong, NJ

59

Lake Hortonia, VT

4

Navesink River, NJ

3

Lake Housatonic, CT

1

Niagara River

7

Lake Kanawauke, NY

1

No data collected

Lake Lillinoah, CT

1

Norton Reservoir, MA

1

Lake Luzerne, NY

1

Nubanusit Lake, NH

1

Lake Mahopac, NY

5

Ohio Lake (Unknown)

1

Lake Mohawk, NJ

4

Oneida Lake, NY

Lake Nockamixion, PA

2

Onondaga Lake, NY

1

Lake of Two Mountains, QC

1

Onota Lake, MA

5

140

12

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

29

Appendix A continued: List of all 2013 previously visited waterbodies Previous Waterbody

Frequency

Previous Waterbody

Frequency

Oscawana Lake, NY

1

St. Lawrence River

6

Otis Reservoir, MA Owasco Lake, NY

5 3

Summit Lake, NY Sunset Lake, VT

1 1

Oyster Bay, NY

1

Susquehanna River, DL

1

Paradox Lake, NY

3

Swinging Bridge Lake, NY

5

Parker Lake, PA

1

Thames River, CT

1

Passaic River, NJ

2

Tispaquin Pond, MA

1

Pine Lake, NY

1

Toms River, NJ

1

Piseco Lake, NY

1

Trout Lake, NY

3

Putnam Pond, NY

1

Twin Lakes, CT

1

Raritan Bay

1

Upper Saranac Lake, NY

1

Raritan River, NJ

1

Wallum Lake, MA

1

Raystown Lake, PA

1

Watchaug Pond, RI

1

River in Montreal (unknown)

1

Waterbury Reservoir, VT

1

Round Lake, NY

2

Webster Lake, MA

2 4

3

Whaley Lake, NY

Round Valley Reservoir, NJ

White Lake, NY

1

Windsor Lake, MA

1

Sacandaga Lake, NY

14

Salt Pond, MA

1

Saranac Lake, NY

4

Saratoga Lake, NY

67

Schroon Lake, NY

43

Schroon River, NY

7

Schuylkill River, PA

1

Seneca Lake, NY

2

Shrewsbury River, NJ

1

Skaneateles Lake, NY

3

Smith Mountain Lake, VA

3

Snyders Lake, NY

1

Sodus Bay, Lake Ontario, NY

1

Spofford Lake, NH

1

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

30

Appendix B: List of all samples removed from boats Boat ID

Launch/ Common Name Retrieve

Species

Invasive/ Lake Waterbody Native

7/22/12 Mossy Point

NJ2HF

L

Eelgrass

Vallisneria americana

N

Shrewsbury River, NJ

8/30/12 Norowal Marina

NY2EL

L

Date

Launch

Eelgrass

Vallisneria americana

N

> 2 weeks

5/11/13 Million Dollar Beach NY8UM L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

5/11/13 Million Dollar Beach NY8UM L

Variable pondweed

Potamogeton gramineus

N

> 2 weeks

5/16/13 Mossy Point

VT725

Quillwort

Isoetes

N

Lake George, NY

5/26/13 Mossy Point

NY6GG L

Northern Watermilfoil

Myriophyllum sibericum

N

Lake George, NY

5/26/13 Mossy Point

NY7GB

L

Zebra mussels

Dreissena polymorpha

I

Lake Champlain

5/26/13 Mossy Point

NY7GB

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Champlain

5/26/13 Rogers Rock

NY6GG R

Northern watermilfoil

Myriophyllum sibericum

N

Lake George, NY

5/27/13 Mossy Point

NJ7GT

L

Red pondweed

Potamogeton alpinus

N

> 2 weeks

5/28/13 Norowal Marina

NJ8GY

R

Northern watermilfoil

Myriophyllum sibericum

N

Lake Hopatcong, NJ

5/31/13 Rogers Rock

NY3FP

R

Common waterweed

Elodea canadensis

N

> 2 weeks

6/2/13

Norowal Marina

NY0GB

L

White-stem pondweed

Potamogeton praelongus N

> 2 weeks

6/3/13

R

Mossy Point

NJ0HE

R

Water crowfoot

Ranunculus aquatilis

N

> 2 weeks

6/10/13 Mossy Point

NJ4FK

R

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake George, NY

6/11/13 Mossy Point

PA9CE

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Champlain

6/12/13 Norowal Marina

VT17P

R

Clasping leaf pondweed

Potamogeton richardsonii N

Lake George, NY

6/14/13 Mossy Point

MEVWA L

Eurasian watermilfoil

Myriophyllum spicatum

I

Hudson River, NY

6/14/13 Mossy Point

MEVWA L

Curly-leaf pondweed

Potamogeton crispus

I

Hudson River, NY

6/15/13 Norowal Marina

NY0KZ

L

Eelgrass

Vallisneria americana

N

> 2 weeks

6/16/13 Hague Town Launch CT3BB

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Champlain

6/17/13 Mossy Point

FL5NL

L

Coontail

Ceratophyllum demersum N

Lake Champlain

6/17/13 Mossy Point

FL5NL

L

Red pondweed

Potamogeton alpinus

Lake Champlain

6/20/13 Norowal Marina

NY6GA

L

Unidentifiable pondweed

6/21/13 Norowal Marina

NJ1HE

L

Curly-leaf pondweed

Potamogeton crispus

I

> 2 weeks

6/21/13 Rogers Rock

NY3GL

L

Northern Watermilfoil

Myriophyllum sibericum

N

Hudson River, NY

6/21/13 Rogers Rock

NY7US

R

Curly-leaf pondweed

Potamogeton crispus

I

Lake George, NY

6/22/13 Rogers Rock

MS9AV R

Red pondweed

Potamogeton alpinus

N

Lake George, NY

6/22/13 Rogers Rock

NY4FX

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

6/26/13 Rogers Rock

NY0MG R

Large leaf pondweed

Potamogeton amplifolius N

Lake George, NY

6/26/13 Rogers Rock

NY0MG R

Variable pondweed

Potamogeton gramineus

N

Lake George, NY

6/26/13 Rogers Rock

NY3FH

R

Variable pondweed

Potamogeton gramineus

N

Lake George, NY

6/26/13 Hague Town Launch NY0FT

L

Variable pondweed

Potamogeton gramineus

N

> 2 weeks

6/27/13 Norowal Marina

NY1GK

L

Mermaid weed

Proserpinaca palustris

N

Lake George, NY

6/27/13 Rogers Rock

NY5GD L

Large leaf Pondweed

Potamogeton amplifolius N

Lake George, NY

6/29/13 Norowal Marina

NY0KS

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Saratoga Lake, NY

6/29/13 Norowal Marina

NY0KS

L

Eelgrass

Vallisneria americana

N

Saratoga Lake, NY

6/29/13 Norowal Marina

RI0MS

L

Bladderwort

Utricularia macrorhiza

N

> 2 weeks

6/29/13 Rogers Rock

NY7EK

L

Curly-leaf pondweed

Potamogeton crispus

I

Lake George, NY

6/29/13 Rogers Rock

NY7Ek

L

Quillwort

Isoetes

N

Lake George, NY

6/29/13 Rogers Rock

NY4FY

L

Pipewort

Eriocaulon aquaticum

N

Kinderhook Lake, NY

6/29/13 Rogers Rock

NY5GD R

Curly-leaf pondweed

Potamogeton crispus

I

Lake George, NY

6/30/13 Rogers Rock 7/3/13 Norowal Marina

SC3BD NY4JU

Clasping leaf pondweed Zebra mussel

Potamogeton richardsonii N Dreissena polymorpha I

L L

N

Niagara River

> 2 weeks Lake George, NY

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

31

Appendix B continued: List of all samples removed from boats Launch/ Common Name Retrieve

Species

Invasive/ Last Waterbody Native

L L

Eurasian watermilfoil Variable pondweed

Myriophyllum spicatum Potamogeton gramineus

I N

Lake George, NY Lake Hopatcong, NJ

Norowal Marina NY4UM L

Zebra mussel

Dreissena polymorpha

I

> 2 weeks

7/4/13

Norowal Marina NY4UM L

Quagga mussel

Dreissena bugensis

I

> 2 weeks

7/4/13

Rogers Rock

NJ2HE

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Greenwood Lake, NY/NJ

7/4/13

Rogers Rock

NJ5GJ

R

Unidentifiable pondweed

7/4/13

Dunham’s Bay

NY6MG R

7/5/13

Date

Launch

Boat ID

7/3/13 7/3/13

Norowal Marina NY4JU Rogers Rock NJ2HF

7/4/13

Lake Hopatcong, NJ

Coontail

Ceratophyllum demersum N

> 2 weeks

Norowal Marina NY2GA L

Water chestnut

Trapa natans

I

Saratoga Lake, NY

7/5/13

Norowal Marina CT4BC

L

Unknown marine species

7/6/13

Norowal Marina NY3UZ

L

Northern watermilfoil

Myriophyllum sibericum

N

Lake George, NY

7/6/13

Norowal Marina NY3UZ

L

Large leaf pondweed

Potamogeton amplifolius

N

Lake George, NY

7/6/13

Norowal Marina NY3UZ

L

Water marigold

Bidens beckii

N

Lake George, NY

7/6/13

Rogers Rock

NJ5GB

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

7/6/13

Dunham’s Bay

NY2FY

R

Mosquito larvae

N

> 2 weeks

7/9/13

Norowal Marina PA3DE

L

Unknown marine species

L

Mermaid weed

Proserpinaca palustris

N

> 2 weeks

7/12/13 Norowal Marina NY9575 L

Red pondweed

Potamogeton alpinus

N

> 2 weeks

7/12/13 Norowal Marina NY7GB

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake George, NY

7/11/13 Rogers Rock

NY1UJ

L

Atlantic Ocean

Atlantic Ocean

7/13/13 Mossy Point

NY9MC L

Zebra mussels

Dreissena polymorpha

I

Lake George, NY

7/13/13 Mossy Point

NY9MC L

Quillwort

Isoetes

N

Lake George, NY

7/13/13 Mossy Point

NY9MC L

Eelgrass

Vallisneria americana

N

Lake George, NY

7/13/13 Norowal Marina NJ4HB

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Hopatcong, NJ

7/13/13 Norowal Marina NJ4HB

L

Large leaf pondweed

Potamogeton amplifolius

N

Lake Hopatcong, NJ

7/13/13 Norowal Marina CT8BE

L

Unidentifiable milfoil

7/13/13 Norowal Marina NY5UD L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

7/13/13 Norowal Marina MS7BB L

Red pondweed

Potamogeton alpinus

N

Lake George, NY

7/13/13 Norowal Marina NY4EF

L

Large leaf pondweed

Potamogeton amplifolius

N

> 2 weeks

7/13/13 Norowal Marina NY3LA

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Greenwood Lake, NY/NJ

7/13/13 Norowal Marina NY3LA

L

Eelgrass

Vallisneria americana

N

Greenwood Lake, NY/NJ

7/14/13 Mossy Point

NY6GB

L

Zebra mussels

Dreissena polymorpha

I

Saratoga Lake, NY

7/14/13 Mossy Point

NY6GB

L

Eelgrass

Vallisneria americana

N

Saratoga Lake, NY

7/15/13 Mossy Point

NY7EC

L

Curly-leaf pondweed

Potamogeton crispus

I

> 2 weeks

7/16/13 Mossy Point

Lake Placid, NY

NY8FH

L

White-stem pondweed

Potamogeton praelongus

N

Lake George, NY

7/17/13 Norowal Marina NJ3GK

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Hopatcong, NJ

7/17/13 Norowal Marina NJ3GK

L

Physa snail

Physa gyrina

N

Lake Hopatcong, NJ

7/17/13 Norowal Marina NJ3GK

L

Ramshorn snail

Helisoma trivolvis

N

Lake Hopatcong, NJ

7/17/13 Norowal Marina NY9GK

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Mahopac, NY

7/17/13 Norowal Marina NY9GK

L

Common waterweed

Elodea canadensis

N

Lake Mahopac, NY

7/17/13 Norowal Marina NJ1HC

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Hopatcong, NJ

7/18/13 Norowal Marina MD6BZ L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

7/19/13 Norowal Marina NY9GB

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

7/19/13 Norowal Marina NJ7FD

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

7/19/13 Norowal Marina NY0GK 7/20/13 Norowal Marina NY4FE

L L

White-stem pondweed Eurasian watermilfoil

Potamogeton praelongus Myriophyllum spicatum

N I

Lake George, NY Oneida Lake, NY

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

32

Appendix B continued: List of all samples removed from boats Launch

Boat ID

7/20/13 Norowal Marina 7/20/13 Norowal Marina

NY4FE NY4FE

Launch/ Common Name Retrieve L Coontail L Common waterweed

7/20/13 Rogers Rock

NJ9GV

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Wallenpaupack, PA

7/20/13 Hague Town Launch NA

L

Common waterweed

Elodea canadensis

N

Delaware River

7/21/13 Mossy Point

NJ1GE

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake George, NY

7/21/13 Mossy Point

NJ1GE

L

Common waterweed

Elodea canadensis

N

Lake George, NY

7/21/13 Mossy Point

NJ1GE

L

Eelgrass

Vallisneria americana

N

Lake George, NY

7/21/13 Norowal Marina

NY4GL

L

Common waterweed

Elodea canadensis

N

Copake Lake, NY

7/21/13 Norowal Marina

NY4GL

L

Slender naiad

Najas flexilis

N

Copake Lake, NY

7/21/13 Norowal Marina

NY1UA

L

Unknown marine species

7/21/13 Norowal Marina

NY7GE

L

Slender naiad

Najas flexilis

N

Niagara River

7/21/13 Norowal Marina

NJ1XN

L

Northern watermilfoil

Myriophyllum sibericum

N

> 2 weeks

7/21/13 Norowal Marina

NJ1XN

L

Common waterweed

Elodea canadensis

N

> 2 weeks

7/21/13 Norowal Marina

NY9HS

L

Curly-leaf pondweed

Potamogeton crispus

I

> 2 weeks

7/21/13 Rogers Rock

NY3GG

L

Barnacles

7/22/13 Mossy Point

NY1MD L

Water chestnut

Trapa natans

I

Oneida Lake, NY

7/22/13 Mossy Point

NY1MD L

Eurasian watermilfoil

Myriophyllum spicatum

I

Oneida Lake, NY

7/22/13 Mossy Point

NY1MD L

Eelgrass

Vallisneria americana

N

Oneida Lake, NY

7/22/13 Mossy Point

NY1MB L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake George, NY

7/22/13 Mossy Point

NY1FS

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Saratoga Lake, NY

7/22/13 Rogers Rock

NY4MA L

Common waterweed

Elodea canadensis

N

Lake George, NY

7/24/13 Norowal Marina

NY6FP

L

Flat-stem pondweed

Potomogeton zosterformis N

Lake George, NY

7/24/13 Norowal Marina

MS9KN

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake George, NY

7/24/13 Norowal Marina

MS9KN

L

Common waterweed

Elodea canadensis

N

Lake George, NY

7/25/13 Rogers Rock

NY5ME

L

Clasping leaf pondweed Potamogeton richardsonii N

Saratoga Lake, NY

7/26/13 Mossy Point

NY5UM L

Eurasian watermilfoil

I

Lake George, NY

7/26/13 Mossy Point

NY5UM L

White-stem pondweed

N

Lake George, NY

7/26/13 Mossy Point

NY5UM L

Common waterweed

Elodea canadensis

N

Lake George, NY

7/26/13 Norowal Marina

NY5GL

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake George, NY

7/26/13 Norowal Marina

NY5GL

L

White-stem pondweed

Potamogeton praelongus N

Lake George, NY

7/26/13 Norowal Marina

NY5GL

L

Common waterweed

Elodea canadensis

Lake George, NY

7/26/13 Norowal Marina

NY0FE

L

Unknown marine species

> 2 weeks

7/26/13 Norowal Marina

NY5MC L

Barnacles

Atlantic Ocean

7/27/13 Mossy Point

CT1BA

L

Barnacles

Long Island Sound

7/27/13 Mossy Point

NY2GI

L

Unidentifiable pondweed

Cuba Lake, NY

7/27/13 Norowal Marina

NJ4HC

L

Eurasian watermilfoil

Myriophyllum spicatum

7/27/13 Norowal Marina

NY5UG

L

Coontail

Ceratophyllum demersum N

> 2 weeks

7/27/13 Norowal Marina

NY5UG

L

Common waterweed

Elodea canadensis

N

> 2 weeks

7/28/13 Mossy Point

NY6GY

L

Curly-leaf pondweed

Potamogeton crispus

I

Greenwood Lake, NY/NJ

7/28/13 Mossy Point

NY6GY

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Greenwood Lake, NY/NJ

7/28/13 Norowal Marina

NJ0GE

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Hopatcong, NJ

7/28/13 Norowal Marina

NJ0GE

L

Common waterweed

Elodea canadensis

N

Lake Hopatcong, NJ

7/28/13 Norowal Marina 7/28/13 Norowal Marina

NJ0GE L NY1MD L

Eelgrass Curly-leaf pondweed

Vallisneria americana Potamogeton crispus

N I

Lake Hopatcong, NJ Saratoga Lake, NY

Date

Invasive/ Last Waterbody Native Ceratophyllum demersum N Oneida Lake, NY Elodea canadensis N Oneida Lake, NY Species

Long Island Sound

> 2 weeks

Myriophyllum spicatum

N

I

> 2 weeks

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

33

Appendix B continued: List of all samples removed from boats Date

Launch

Boat ID

Launch/ Common Name Retrieve

Species

Invasive/ Last Waterbody Native

7/29/13 Mossy Point PA4DB L 7/29/13 Norowal Marina NY0UM L

Common waterweed Water Chestnut

Elodea canadensis Trapa natans

N I

Lake George, NY Hudson River, NY

8/1/13

Rogers Rock

NJ3GN

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

8/2/13

Norowal Marina NH5BP

L

Large leaf pondweed

Potamogeton amplifolius N

Hudson River, NY

8/2/13

Norowal Marina NY9UL

L

Blunt leaf pondweed

Potamogeton obtusifolius N

Skaneateles Lake, NY

8/2/13

Norowal Marina NY5UG L

Blunt leaf pondweed

Potamogeton obtusifolius N

> 2 weeks

8/2/13

Norowal Marina NY5UG L

Common waterweed

Elodea canadensis

N

> 2 weeks

8/2/13

Rogers Rock

NY7EK

L

Common waterweed

Elodea canadensis

N

Lake George, NY

8/3/13

Mossy Point

PA0DE

L

Large leaf pondweed

Potamogeton amplifolius N

Lake Champlain

8/3/13

Norowal Marina NY5PM L

Curly-leaf pondweed

Potamogeton crispus

I

> 2 weeks

8/3/13 8/3/13 8/3/13

Norowal Marina CT1BE Norowal Marina NY0GB Rogers Rock NY5FA

Barnacles Unknown marine species Water chestnut

Trapa natans

I

Atlantic Ocean Atlantic Ocean > 2 weeks

8/4/13

Mossy Point

Eurasian watermilfoil

Myriophyllum spicatum

I

Schroon Lake, NY

8/7/13

Norowal Marina NY4FH

L

Variable pondweed

Potamogeton gramineus N

Schroon Lake, NY

8/8/13

Rogers Rock

L

Eurasian watermilfoil

Myriophyllum spicatum

> 2 weeks

8/9/13

Norowal Marina NY2MH L

Large leaf pondweed

Potamogeton amplifolius N

Saratoga Lake, NY

8/9/13

Norowal Marina NY0FX

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Oneida Lake, NY

8/9/13

Norowal Marina NY6EC

L

Eelgrass

Vallisneria americana

N

Saratoga Lake, NY

8/9/13

Norowal Marina NY3GA

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

8/10/13 Norowal Marina NY9GT

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Hopatcong, NJ

8/10/13 Norowal Marina NY9GT

L

Eelgrass

Vallisneria americana

N

Lake Hopatcong, NJ

8/10/13 Norowal Marina FL0MM L

Bladderwort

Utricularia macrorhiza

N

St. Lawrence River

8/12/13 Mossy Point

Large leaf pondweed

Potamogeton amplifolius N

Lake George, NY

L L L

NY7MA L NY1PG

NY3MB L

I

8/15/13 Norowal Marina NY3FT

L

Water chestnut

Trapa natans

I

> 2 weeks

8/15/13 Norowal Marina NJ1HD

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Greenwood Lake, NY/NJ

8/15/13 Norowal Marina CT7AX

L

Large leaf pondweed

Potamogeton amplifolius N

> 2 weeks

8/15/13 Norowal Marina CT7AX

L

Slender naiad

Najas flexilis

N

> 2 weeks

8/16/13 Norowal Marina PA1CK

L

Bladderwort

Utricularia macrorhiza

N

> 2 weeks

8/16/13 Norowal Marina PA1CK

L

Common waterweed

Elodea canadensis

N

> 2 weeks

8/16/13 Norowal Marina NJ5GE

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Hopatcong, NJ

8/16/13 Norowal Marina NJ5GE

L

Eelgrass

Vallisneria americana

N

Lake Hopatcong, NJ

8/16/13 Norowal Marina NJ5GE

L

Large leaf pondweed

Potamogeton amplifolius N

Lake Hopatcong, NJ

8/16/13 Norowal Marina NJ5GE

L

Common waterweed

Elodea canadensis

N

Lake Hopatcong, NJ

8/16/13 Norowal Marina MS8PK

L

Barnacles

8/17/13 Norowal Marina NY0UT

L

Eelgrass

Vallisneria americana

N

Lake George, NY

8/17/13 Norowal Marina NY0UT

L

Coontail

Ceratophyllum demersum N

Lake George, NY

8/17/13 Norowal Marina NY0UT

L

Blunt leaf pondweed

Potamogeton obtusifolius N

Lake George, NY

8/17/13 Norowal Marina NY7GA

L

Algae

8/17/13 Norowal Marina NJ7XM

L

Eelgrass

Vallisneria americana

N

Lake George, NY

8/17/13 Norowal Marina NJ7XM

L

Coontail

Ceratophyllum demersum N

Lake George, NY

8/17/13 Norowal Marina NJ7XM

L

Large leaf pondweed

Potamogeton amplifolius N

Lake George, NY

8/17/13 Norowal Marina NY1MJ 8/17/13 Norowal Marina NY1MJ

L L

Eurasian watermilfoil Large leaf pondweed

Myriophyllum spicatum I Potamogeton amplifolius N

Saratoga Lake, NY Saratoga Lake, NY

Connecticut River

Ballston Lake, NY

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

34

Appendix B continued: List of all samples removed from boats Launch/ Common Name Retrieve

Species

Invasive/ Last Waterbody Native

8/18/13 Norowal Marina NJ5HA 8/18/13 Norowal Marina NJ5HA

L L

Eurasian watermilfoil Eelgrass

Myriophyllum spicatum Vallisneria americana

I N

Greenwood Lake, NY/NJ Greenwood Lake, NY/NJ

8/18/13 Norowal Marina NY24C

L

Slender naiad

Najas flexilis

N

Lake George, NY

8/19/13 Norowal Marina NJ8XN

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Hopatcong, NJ

8/19/13 Norowal Marina CT1BF

L

Clasping leaf pondweed Potamogeton richardsonii N

Lake George, NY

8/19/13 Norowal Marina NY4MB L

Common waterweed

Elodea canadensis

N

Lake Champlain

8/19/13 Norowal Marina NY4MB L

Blunt leaf pondweed

Potamogeton obtusifolius N

Lake Champlain

8/21/13 Mossy Point

Date

Launch

Boat ID

NY6FH

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake George, NY

8/22/13 Norowal Marina NJ1FW

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake Hopatcong, NJ

8/22/13 Norowal Marina NJ1FW

L

Common waterweed

Elodea canadensis

N

Lake Hopatcong, NJ

8/22/13 Norowal Marina NY9UT 8/22/13 Norowal Marina NJ3HA 8/23/13 Mossy Point VT00T

L L L

Eurasian watermilfoil Eurasian watermilfoil Water chestnut

Myriophyllum spicatum Myriophyllum spicatum Trapa natans

I I I

Schroon Lake, NY Lake Hopatcong, NJ Lake Champlain

8/23/13 Norowal Marina VT5GG

L

Northern watermilfoil

Myriophyllum sibericum

N

Lake Champlain

8/24/13 Norowal Marina NY6FY

L

Curly-leaf pondweed

Potamogeton crispus

I

Ballston Lake, NY

8/25/13 Norowal Marina NJ0GM L

Clasping leaf pondweed Potamogeton richardsonii N

Saratoga Lake, NY

8/25/13 Norowal Marina NJ0GM L

Mermaid weed

Proserpinaca palustris

N

Saratoga Lake, NY

8/29/13 Norowal Marina NJ4XM

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

8/29/13 Norowal Marina NY664

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

8/29/13 Norowal Marina NY664

L

Water crowfoot

Ranunculus aquatilis

N

> 2 weeks

8/30/13 Mossy Point

NY3US

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake George, NY

8/30/13 Mossy Point

NY3GB

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Lake George, NY

8/30/13 Mossy Point

NY3GB

L

Variable pondweed

Potamogeton gramineus

N

Lake George, NY

8/30/13 Norowal Marina NY3MB L

Eurasian watermilfoil

Myriophyllum spicatum

I

Hinckley Reservoir, NY

8/30/13 Norowal Marina NY2EL

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

8/30/13 Norowal Marina NY2EL

L

Common waterweed

Elodea canadensis

N

> 2 weeks

8/30/13 Rogers Rock

NJ7GJ

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Brant Lake, NY

8/30/13 Rogers Rock

NJ7GJ

L

Variable pondweed

Potamogeton gramineus

N

Brant Lake, NY

8/31/13 Norowal Marina NY9PP

L

Eurasian watermilfoil

Myriophyllum spicatum

I

> 2 weeks

8/31/13 Norowal Marina NY7JU

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Saratoga Lake, NY

8/31/13 Norowal Marina NY6MJ

L

Algae

Niagara River

8/31/13 Norowal Marina NY1MC L

Eurasian watermilfoil

Myriophyllum spicatum

I

Seneca Lake, NY

8/31/13 Norowal Marina NY1MC L

Slender naiad

Najas flexilis

N

Seneca Lake, NY

9/1/13

Norowal Marina NY9MJ

L

Eurasian watermilfoil

Myriophyllum spicatum

I

Saratoga Lake, NY

9/1/13

Norowal Marina NY9MJ

L

Eelgrass

Vallisneria americana

N

Saratoga Lake, NY

9/7/13 9/7/13

Norowal Marina NY2UM L Norowal Marina NY2UM L

Water chestnut Mermaid weed

Trapa natans Proserpinaca palustris

I N

> 2 weeks > 2 weeks

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

35

Appendix C: Summary of lake steward key findings for 2008-2013 Total Boats Launch

2008

2009

2010

2011

2012

2013

Norowal Marina Mossy Point

1264 949

1030 1410

807 875

2227 3598

2337 1836

2990 1816

Dunham’s Bay

437

445

—

512

174

620

Hague Town

152

531

279

351

967

443

Rogers Rock

126

424

577

1796

1658

1124

Northwest Bay

31

—

—

—

—

—

Island View Marina

25

—

—

—

—

—

Gull Bay Million Dollar Beach

— —

16 —

— —

— 109

— —

— 94

2984

3856

2538

8593

6972

7087

Total

At Risk Boats Boats that have been in a waterbody other than Lake George within two weeks prior to launching at a Lake George launch

% at Risk

2008 2009 2010 2011 2012 2013 16.50 — 14% 31% 13% 13% %

Most Common Previously Visited Waterbodies Waterbody 2008 2009 2010 2011 2012 2013 Hudson River (NY) 89 65 33 100 86 91 Lake Champlain 51 62 65 97 96 80 Saratoga Lake (NY) 47 38 28 69 73 67 Lake Hopatcong (NJ) 54 20 19 55 60 59 Atlantic Ocean 52 12 18 34 53 67 Schroon Lake (NY) 24 17 23 47 39 43 Long Island Sound (NY) 22 17 13 48 40 33 Candlewood Lake (CT) 22 13 4 33 33 20 Greenwood Lake (NY/NJ) 22 11 14 20 14 22 Connecticut River (CT) 23 11 8 27 22 14

Invasive Species Found Species

2008 2009

2010

Total 464 451 322 267 237 193 173 125 107 105

Number Invasive Species Removed

2011 2012 2013 Total Launch 64 73 59 308 Norowal Marina

Eurasian watermifoil

28

48

36

Curly-leaf pondweed

24

13

9

15

25

11

97

Water chestnut

4

7

5

6

6

7

2008 2009 2010 2011 2012 2013 28

33

15

13

52

48

Mossy Point

6

30

19

1

36

22

35

Dunham’s Bay

11

5

--

3

0

0

15

2

11

50

23

1

Zebra Mussels

5

7

3

2

15

5

37

Hague Town

Quagga Mussels

0

0

0

0

2

1

3

Rogers Rock

1

5

8

20

20

11

Spiny Water Flea

0

0

0

0

10

0

10

Northwest Bay

0

--

--

--

--

—

Total

61

75

53

87

131

83

490

Island View Marina

0

--

--

--

--

—

Gull Bay Million Dollar Beach Total

--61

0 -75

--53

-0 87

--131

— 1 83

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

36

Appendix D: Summary of lake steward data for 2008-2013 by launch Dunham’s Bay Year

Number Number of boats At Risk Boats: of Boats in a waterbody Launching boats that have been in a within 2 weeks waterbody other than prior to launching LG within 2 weeks

Number of previously visited waterbodies

Number of previously visited states

Number of invasive species samples

Percent of boats with LGPC decal

2013

620

386

13% (80 boats)

24

5

0

99%

Percent of boaters that took spread prevention measures 52%

2012

174

105

16% (28 boats)

10

3

0

98%

71%

2011

512

328

19% (78 boats)

41

8

3

100%

80%

2010

—

—

—

—

—

—

—

—

2009

445

174

17% (77 boats)

43

7

2

69%

39%

2008

437

N/A

N/A

41

9

11

~66%

88%

Number of previously visited waterbodies

Number of previously visited states

Number of invasive species samples

Percent of boats with LGPC decal

Hague Town Launch Year

Number Number of boats At Risk Boats: of Boats in a waterbody Launching boats that have been in a within 2 weeks waterbody other than prior to launching LG within 2 weeks

2013

443

212

10% (45 boats)

30

5

1

93%

Percent of boaters that took spread prevention measures 50%

2012

967

486

7% (66 boats)

28

6

23

84%

20%

2011

351

59

7% (18 boats)

12

3

50

98%

67.5%

2010

279

220

6% (18 boats)

17

3

11

97.50%

89%

2009

531

277

9% (46 boats)

29

4

2

69%

43%

2008

152

N/A

N/A

21

5

15

68%

92%

Million Dollar Beach Year

At Risk Boats: Number Number of boats of Boats in a waterbody Launching boats that have been in a within 2 weeks waterbody other than prior LG within 2 weeks

Number of previously visited waterbodies

Number of previously visited states

Number of invasive species samples

Percent of boats with LGPC decal

Percent of boaters that took spread prevention measures

2013

94

34

14% (13 boats)

8

1

1

70%

58%

2012

—

—

—

—

—

—

—

—

2011

109

68

35% (32 boats)

17

2

0

96%

79%

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

37

Appendix D continued: Summary of lake steward data for 2008-2013 by launch Mossy Point Year

Number Number of boats At Risk Boats: of Boats in a waterbody Launching boats that have been in a within 2 weeks waterbody other than prior LG within 2 weeks

Number of previously visited waterbodies

Number of Number of Percent of previously invasive boats with visited species LGPC decal states samples

Percent of boaters that took spread prevention measures

2013

1,816

1,233

9% (170 boats)

55

8

22

90%

32%

2012

1,836

1,836

10% (183 boats)

45

8

36

93%

46%

2011

3,598

1,931

12% (295 boats)

80

13

1

97%

76%

2010

875

373

18% (155 boats)

42

10

19

94%

97%

2009

1,410

1,140

12% (170 boats)

64

16

30

84%

67%

2008

949

N/A

N/A

37

10

6

76%

72%

Norowal Marina Year

Number Number of boats At Risk Boats: of Boats in a waterbody Launching boats that have been in a within 2 weeks waterbody other than prior LG within 2 weeks

Number of previously visited waterbodies

Number of previously visited states

Number of Percent of invasive boats with species LGPC decal samples

Percent of boaters that took spread prevention measures

2013

2,990

1,391

16% (482 boats)

118

12

48

100%

58%

2012

2,337

2,337

20% (470 boats)

115

14

52

100%

80%

2011

2,227

789

26% (453 boats)

113

14

13

100%

72%

2010

807

258

15% (125 boats)

55

10

15

100%

98%

2009

1,060

437

20% (208 boats)

73

13

33

100%

94%

2008

1,264

N/A

N/A

97

15

28

95%

85%

Rogers Rock Year

Number Number of boats At Risk Boats: of Boats in a waterbody Launching boats that have been in a within 2 weeks waterbody other than prior LG within 2 weeks

Number of previously visited waterbodies

Number of previously visited states

Number of Percent of invasive boats with species LGPC decal samples

Percent of boaters that took spread prevention measures

2013

1,124

680

10% (109 boats)

44

6

11

86%

39%

2012

1,658

1,658

10% (170 boats)

48

6

20

86%

83%

2011

1,796

692

12% (140 boats)

52

8

20

89%

78%

2010

577

472

21% (121 boats)

54

10

8

76%

92%

2009

424

353

14% (59 boats)

36

8

9

75%

87%

2008

126

N/A

N/A

22

7

1

71%

78%

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Appendix E: Data Collection Form

38

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Appendix F: Clean, Drain, Dry Rack Card This rack card was handed out to boaters by the Lake Stewards. Other additional handouts were also available at their tables.

Front

Back

39

Lake George Lake Steward Program Season Report 2013– Key Findings Abridged Version

Help Stop the Spread.

CLEAN, DRAIN, DRY