Upper Coxs River Subcatchment
The Upper Coxs River subcatchment contains the largest range of river channel types of any Hawkesbury Nepean subcatchment, ranging from Chain of Ponds to fully concrete lined urban channels.
A number of river reaches are in very good condition with a management focus on conservation. These are typically the headwater reaches of the rivers. However, the majority of river reaches are highly degraded. The land has been extensively cleared for industry, agriculture and grazing, and some creeks are highly modified by urban developments.
An extremely rare example of a Chain Of Ponds river channel type in good condition with a high recovery potential is located in the upper reaches of the Coxs River. This is a unique aspect of the subcatchment and should be a priority for management to protect it from degradation. The Coxs River is impounded at Lake Wallace and Lake Lyell, with another large impoundment at Thompsons Dam at the headwaters of the Thompsons creek tributary. A smaller reservoir is located on Farmers Creek. The impoundments serve the needs of the very significant electricity generation industry of this area and provide town drinking water. The subcatchment is characterised by a high level of community based environmental activity, much of which is related to the protection and restoration of habitat for the Copper Wing Butterfly. |
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