COASTAL PRAIRIE WETLAND MITIGATION
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Wetland mitigation Clean Water Act protecting the Waters of the United States (WOUS) Regulatory Agencies: USACE, EPA, LDNR OCM Development impacts to jurisdictional wetlands
â—ŚWetlands adjacent to or flow into traditional navigable waterways or relatively permanent waters
Familiar impacts - residential, retail, industrial, mineral extraction, energy conduits
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Mitigation Banks and Permittee Responsible Mitigation Areas Lacassane Coastal Prairie Moss Lake Sasol PRM Petit Bois - Addendum 1 Black Bayou English Bayou South Fork Coastal Total
Date Approved
Coastal Prairie Acreage
Jun-03 Jul-14 Aug-14 Jul-15 Apr-16 Apr-16 Jul-16
800.0 116.1 551.7 77.1 236.5 162.2 508.9 2,452.5
Coastal Prairie Acres Restored 
 by Mitigation Efforts
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Prairie Mitigation in the Cajun Prairie
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Learn
Implement
Practice
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Common Name
FAC or Louisiana Wetter Conservation Indicator Coefficient Status Allain
Deer Park Prairie Singhurst
White Nash Mowotony Lake Prairie Prairie Prairie Rosen Rosen Reid
NonFlorence disclosure Sasol Club Private Prairie Reid Grace et Property and Delta al Reid
slender threeseed mercury (#1)
FAC
3
3
3
3
3
bog yelloweyed grass (#532)
OBL
7
7
7
Native Species
129
127
97
63
103
67
125
All Species
650 total
137
133
100
66
109
71
137
Prairie Remnant Species Matrix A Collective Pool of Knowledge
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Establishing the Early Successional Pathway for Restoring Coastal Prairie Wetlands Historic coastal prairie region Coastal prairie soils Hydrology restoration Native species (produced, wild, vegetative and soil / watershed seed bank) Prescribed burning Herbivory and trampling Ecological trajectory - broad and open ended (similarity of existing remnants) Native and introduced species duke it out for environmental resources.
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Identifying a Coastal Prairie Mitigation Site Observed indicators ◦Location
◦Historic Cajun Prairie ◦The Chenier Plain
◦Prairie soils ◦Current land uses ◦Active agronomic, grazing, or fallow fields ◦Chinese tallow scrub-forest on abandoned land
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Then and Now CAJUN PRAIRIE SOIL MAP A COMPOSITE OF 36 SOIL TYPES
THE GREAT SOUTHWEST PRAIRIE IN LOUISIANA (MILTON NEWTON 1972)
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Coastal Prairie 1940 Aerial
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Active Agriculture
 Agronomic and Grazing
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Fallow Fields
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Scrub-shrub Tallow Forest
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Crawfish Chimneys
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Hydrology Restoration and Tallow Removal Marais and platin formation
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Mima Mounds Under Tallow Canopy
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Two-year Old Marshhay Plugs on 9-foot Centers
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Freshly Planted, Marshhay Trade Gallons
 on 50-foot Centers
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Seed Distribution MEADOW MAKERS WILD SEED
ULL ECOLOGY CENTER SEED PRODUCTION
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Seed Ball Production
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Delta’s Flail-Vac
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Fire
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Coastal Prairie Remnant on the Coastal Marsh Fringe
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Coastal Prairie Remnant Adjacent To Fresh Marsh
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Scrub-shrub Coastal Prairie Prospect
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Moss Lake
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SASOL 
 PRMA
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South Fork Coastal
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Saline Coastal Prairie 
 Corpus Christi
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30-1
30-2
30-3