Creek systems are the lifeblood of our natural environment. Creeks support a high diversity of plants and animals as well as recreational areas for all to enjoy. Creeklines often provide wildlife corridors between larger bushland reserves. There are significant pressures on our creeks. Council and the community have significant roles in ensuring the health of our creeks into the future.
Managing and Protecting our Creeks
The environmental health of a creek is obvious. Clear water, abundant native plants, small birds and frogs contrasts with heavy weed infestations, eroding banks and muddy or polluted water. Creek condition varies throughout Northern Beaches.
Ecological Values
Classified as Group A Creeks, near pristine Wheeler and Deep Creek have very high ecological value. South Creek in Dee Why and Greendale Creek in Brookvale are classified as Group C creeks. These degraded creeks are considered to have a very low ecological value. It is Council’s intention to keep our creeks at a high ecological value. The 'Warringah Creek Management Study' has further information on the ecological value of many of our creeks.
Our Creeks’ Health Check
All our creeks are under threat from development that results in poor water quality, increased sediment loads and weed infestations. When the number of hard surfaces being built is increased, water run off increases from the catchment. Stormwater flowing at higher speeds can cause flooding and erode creek banks and beds.
The Weed Threat
One of the biggest threats to our creeks is weeds. They choke creek lines and can smother native creek vegetation which is important habitat for native animals. In some circumstances, they can also pose a flooding risk. Council and Bushcare volunteers regularly work on removing weed infestations.
Help Save Our Creeks
Even if you don't live next to a creek everything we discard on the land can be washed away by rain and end up in the creek or waterways. Being mindful of our contribution to pollution and litter, including improper weed disposal, will help keep creeks and their resident animals healthy. You can also volunteer with Bushcare or Streamwatch.