Denis LeBlanc U.S. Geological Survey Northborough, MA
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Transcript of Denis LeBlanc U.S. Geological Survey Northborough, MA
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Denis LeBlanc
U.S. Geological SurveyNorthborough, MA
The Hydrology of Cape Cod Streams
Considerations for the Coonamesset River
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CoonamessettRiver
Water-Table Map from Ground-Water
Flow Model
Water-table contours in feet
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Contributing Area to the
Coonamessett River
River Discharge9.0 Mgal/day
Contributing Area7.3 mi2
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CoonamessettRiver
Contributing Areas
Water-table contours in feet
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http://waterdata.usgs.gov/nwis
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Ground-Water Level
Streamflow
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0 4000 8000 12000 16000
DISTANCE FROM POND OUTLET, IN FEET
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5/24/89
7/5/894/11/89
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Outlet of Last Bog
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Nov-88 Jan-89 Mar-89 Apr-89 Jun-89 Aug-89 Sep-89 Nov-89
MIL
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AY Outlet of Last Bog
Sandwich Road
Outlet of Pond
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Coonamessett River
Summary
• Ground water is main source of flow in Coonamessett River
• Recharge area extends onto MMR
• Flow varies directly with ground-water levels
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The Ground-Water Recharge Mosaic
Water Budget
In:
Natural recharge 180 Mgal/d
Onsite systems 7 Mgal/d
Out:
Wells 10 Mgal/d
Streams 62 Mgal/d
Coast 101 Mgal/d