Munroe Brook

Munroe20

Munroe Brook originates in Shelburne between Barstow Road and Governor's Lane with a small portion extending to the north into South Burlington. The stream flows south-west,  under Spear Street. It then continues north-west where it flows and continues under Route 7 before emptying into Lake Champlain in Shelburne Bay. Multiple smaller tributaries enter the main stem along its course.

Urban development has led to urban runoff and erosion along Munroe Brook.  The entire Munroe Brook watershed draining to Lake Champlain is approximately 14.1 km.  The entire stream and its tributaries are Class B waters designated as warm water fish habitat pursuant to the Vermont Water Quality Standards. The land use breakdown of the watershed draining to the impaired reach is 29% developed lands, 38% agricultural or open lands and 33% forested. (VTDEC 2008)

 

Shelburne is located on beautiful Lake Champlain in Chittenden County. Designated as the Lake Champlain Scenic Byway, U.S. Route 7 passes through our community and is the home of Shelburne Museum, Shelburne Farms, and many other tourist attractions.

 

In 2013, the Stream Team began monitoring two sites along Munroe 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.

 

 

Location Date Chloride (mg/L) Nitrogen, Total – Persulfate (mg/L) Phosphorus – Total (TP) (µg/L) Turbidity (NTU)
Munroe 10 9/1/2015 152.9 --  37 3.83
Munroe 20 9/1/2015 42.98 --  44.5 6.08
Munroe 10
8/18/15
94.46
--
51.4
6.33
Munroe 20
8/18/15
30.45
--
66.4
5.74
Munroe 10 8/4/2015 84.04 --  46.7 10.8
Munroe 20 8/4/2015 28.85 --  49.7 6.36
Munroe 10 7/21/2015 53.75 --  54.9 11.2
Munroe 20 7/21/2015 26.76 --  52.3 7.94
Munroe 10 7/7/2015 43.89 --  38 7.98
Munroe 20 7/7/2015 18.03 --  38.2 3.93
Munroe 10 6/23/2015 48.05 --  59.8 11.5
Munroe 20 6/23/2015 20.02 --  199 32.5
Munroe 10 8/19/2014 90.3 --  41.1 13.4
Munroe 20 8/19/2014 35.7 --  39.5 6.47
Munroe 10 8/5/2014 93.4 --  45.6 13.8
Munroe 20 8/5/2014 36.5 --  45 9.75
Munroe 10 7/22/2014 179 --  35.5 4.51
Munroe 20  7/22/2014 93.6 --  49.6 8.37
Munroe 10 7/8/2014 88.1 --  56.3 17.6
Munroe 20 7/8/2014 36.5 --  51.2 18.2
Munroe 10 6/24/2014 115 --  50.3 16.8
Munroe 20 6/24/2014 44.7 --  52.4 14.4
Munroe 10 8/27/2013  28.80 0.33 48.20  4.39
Munroe 20 8/27/2013   69.50   0.54   59.8   12.70 
Munroe 10 8/13/2013 50.5 0.54 61.9  14.30 
Munroe 20  8/13/2013  26.60 0.43  59.00  3.55 
Munroe 10 7/23/2013  76.50 0.6  50.80   12.30
Munroe 20 7/23/2013  28.20 0.46 58.5   11.20 
Munroe 10 7/9/2013  31.00    0.61    49.90     6.81   
Munroe 20 7/9/2013  14.70 0.45    58.90    5.52 
Munroe 10 6/25/2013 --   0.67   92.80   12.80 
Munroe 20 6/25/2013  14.60  0.71   152.00  41.4
Average 2013 50.5 0.48 60.07 22.90
Average 2014 81.28 --  46.65 12.33
Average 2015 53.68 --  61.49 9.52

 

The numbers in red indicate that the sample collected exceeds the standards set by the State of Vermont.

 

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 here: https://anrweb.vermont.gov/dec/dec/VolunteerMonitoriing.aspx 

 

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