Draft Manning River Catchment and Estuary and Catchment Management Program 2021-2031 - Main document

Sediment is released from eroding, disturbed soils associated with grazing and cropping. It causes turbidity, decreases light in the water column and reduces the extent and condition of the aquatic plant assemblage in both freshwater and marine systems (Serov et al, 2019). Freshwater tributaries with significant diffusesource run-off inputs from agriculture include the Little Manning (high phosphorous); the Barnard River (high turbidity, phosphorous, nitrogen); the Bowman and Gloucester rivers (high nitrogen). Based on results in the Estuary Health Risk Model, nutrient and sediment hotspots include Cedar Party Creek and Lansdowne. Key impacts of agricultural diffuse-source runoff on catchment and estuary values are shown in Table 4 below 42.

“There are business advantages and resilience benefits that come from good management. If fertiliser is running off into the river, its money lost to the farmer. We could manage soil better to hold water in the landscape for resilience from drought, flood and climate change.” Kirsty Hughes, member, ECMP Reference Group

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

Stakeholders include: Hunter Local Land Services’ DPIE Department of Agriculture, MidCoast Council, MidCoast Dairy Advancement Group, NSW Farmers Association, Women in Dairy, Young Farmers Network, Economic Development Council. Related issues: loss and degradation of coastal wetlands and riparian vegetation; floodplain drainage and ASS.

Draft Manning River Catchment and Estuary and Catchment Management Program 2021-2031 - Main document

Articles inside

Figure 39 MidCoast Council Organisational Structure

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

Implementation Streams

Appendix 2: The Public Participation Spectrum

13. Bibliography

12. Proposed amendments to the CM SEPP

11.3 The Manning River ECMP Research Program

11.1 MERI for the Manning River, Estuary and Catchment

7. Management Actions

6.15 Systems thinking: the interaction between issues

10. Coastal Zone Emergency Sub-Plan

6.13 Sewerage and Septic System Pathogens

Figure 33: The Manning River floodplain, 20 March 2021

Figure 32: Cattle on the riverbank is a common sight

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

Figure 25: Estuary with negative impacts vs well-managed estuary

Figure 27: Cattai Wetlands

Figure 26: Conceptual diagram of the Greenhouse Effect

Figure 24: The relationship between activities, stressors and ecological impacts

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

Table 2: Subcatchments posing the highest risk to ecological and community values

Figure 21: Stock intensity in the catchment

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

Figure 17: The sampling location for water quality data

Figure 9: The Integrated Planning and Reporting Framework

Figure 15: National Parks make up18.5% of the Manning catchment

Figure 14: Program Logic Model

Figure 12: Values our community ascribed to each subcatchment

Figure 11: The consultation program

Figure 16: Water quality monitoring sites in the estuary

Figure 10: Option for the Manning River ECMP Governance Structure

Figure 7: The five stages of a Coastal Management Program