Potash Brook originates in South Burlington between Dorset and Spear Streets. The stream flows north, close to the Burlington International Airport and US Rte. 2. It then turns west through South Burlington before emptying into Lake Champlain in Shelburne Bay. The Potash Brook watershed covers 43% of the land area within South Burlington (Potash). The Potash Brook watershed is home to some of the densest residential and commercial development within Vermont.

Currently, the Stream Team is monitoring three sites along Potash Brook with the help of volunteers.  Water samples are being taken twice a month throughout the summer and are tested for phosphorus, turbidity, chloride and nitrogen.

LocationSouth Burlington
Watershed Area4,800 acres
Watershed Land Breakdownx% developed land
x% open land
x% forested land

Chloride (mg/L)

Phosphorus – Total (TP) (µg/L)

Turbidity (NTU)

All of the data collected by Chittenden County Stream Team volunteers is shared with the State of Vermont Department of Environmental Conservation (VT DEC). The DEC shares all state-wide data with the Environmental Protection Agency.

State-wide Vermont water quality data can be found on the Agency of Natural Resources website.

National water quality data can be found here: http://www.epa.gov/storet/