Manning River Estuary Catchment and Management Program 2021-2031

Figure 18: Manning River TN and TP readings from 2015-18

MANNING RIVER TOTAL NITROGEN & PHOSPHOROUS Nutrients are elevated. Total nitrogen exceeded the ANZECC total nitrogen trigger of 350 ug/L approximately twice a year with three results for the period exceeding 800 ug/L. Total phosphorus levels exceeded the ANZECC trigger of 25 ug/L in a similar manner. Nutrient levels are greatly influenced by erosion and sediment migration to the waterway, as suggested by the apparent correlation with higher river flows. Total nitrogen and phosphorus results for the 2015-2018 period are represented in Figure 18.

Manning River Estuary and Catchment Management Program (ECMP)

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Manning River Estuary Catchment and Management Program 2021-2031

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Table 9: Contribution of the ECMP to objects of the CM Act

14 Bibliography

Appendix 6: MCC land-use strategies aligned to the CM SEPP objectives

12 Proposed amendments to the CM SEPP

13 Conclusion

Table 8: Research Program

11.2 MERI for the ECMP Action Program

Catchment

10 Coastal Zone Emergency Sub-Plan

Actions led by Council

7.8 Governance Actions

7.5 Aboriginal Custodianship Actions

7.4 Biodiversity Actions

Health Actions

7.1 Stewardship Actions

Figure 35: The three stages of evaluation

7 Management Actions

between issues

6.14 Erosion and Sediment

6.12 Biodiversity Loss

6.11 Urban Stormwater and Litter

20 March 2021

coastal inundation

6.9 Entrance Modifications

Table 4: Key impacts associated with water pollution from diffuse-source runoff

6.8 Modified Flow

6.6 Loss and degradation of riparian vegetation

Acid Sulfate Soil

6.2 Community Stewardship

6.4 Loss and degradation of coastal wetlands

5.2 Manning Threat and Risk Assessment

Table 1: Gross revenue of major industries in the MidCoast Region

4.5 Population Projections and land use

Figure 22: Risk ratings for sediment and nutrient loading in drainage units

Figure 17: The sampling location for water quality data

Figure 20: Manning River chlorophyll-a for the period 2015-2018

Figure 18: Manning River TN and TP readings from 2015-18

Figure 19: Manning River turbidity for the period 2015-2018

Figure 16: Water quality monitoring sites in the estuary

4.3 Water Quality

4.2 Natural assets

Figure 14: Program Logic Model

of the Manning catchment

3 Objectives, principles, program logic

Figure 12: Values our community ascribed to each subcatchment

Figure 13: Problem tree

3.2 Principles

2.3 What our community told us

Coastal Management

Figure 10: Option for the Manning River ECMP Governance Structure

1 Introduction Looking after the river we love

Figure 2: Map of the Planning Areas for the three separate Coastal Management Programs

2.2 Our stakeholder consultation program

1.1 About this program

2 Water Quality and Ecosystem

Characteristics of the estuary and