Engelsby Brook Final Project ENSC 285B Peter Dufault Burlington & South Burlington, Vermont April 29, 2005.

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Presentation transcript:

Engelsby Brook Final Project ENSC 285B Peter Dufault Burlington & South Burlington, Vermont April 29, 2005

Engelsby Brook 1.0 Square Mile Watershed 1.0 Square Mile Watershed 4 Reaches, 1 Tributary 4 Reaches, 1 Tributary Upper Reaches in Golf Course Upper Reaches in Golf Course (Burlington Country Club) Urban Setting Urban Setting Drainage to Lake Champlain Drainage to Lake Champlain

Engelsby Brook April 2005 USGS Gauge Height on lowest reach 1.0 Foot Change in Gauge Height

April 2005 Discharge in Cubic Feet per Second Discharge in Cubic Feet per Second

Photo Date: March 30, 2005 Engelsby Brook Weir/Impoundment Weir/Impoundment Serves as a junction between the Main Stem and Southern Tributary Serves as a junction between the Main Stem and Southern Tributary Regulates Flow Regulates Flow Location: Prospect St.

Photo Date: March 30, 2005 Engelsby Brook Channel Straightening (575’) on Southern Tributary Channel Straightening (575’) on Southern Tributary Golf Course in Distance Golf Course in Distance

Photo Date: March 30, 2005 Location: Route 7 - Near Former Panda Inn Restaurant Bank Erosion Bank Erosion Sediment into brook Sediment into brook Erosion near parking lot Oil & Grease from Rt. 7

Photo Date: March 30, 2005 Englesby Brook Lowest Reach, M.01 Divided Channel Divided Channel Debris Jam

Watershed & Subwatersheds M.01 M.03 T.01 M.02 = Reach Break

Route 7 Area Route 7 Location of Significant Impacts Start of 325’ long culvert Subaru

Reach M.03

Instream Channel Modification

Floodplain Modification and Planform Changes

Impact Rating

Conclusions Upper Reaches Upper Reaches Channel Straightening Channel Straightening Heavy Fertilizer use from golf course Heavy Fertilizer use from golf course Lower Reaches Lower Reaches Channel straightening Channel straightening Significant Urbanization Significant Urbanization Impact scores of Impact scores of Stream types B & C Stream types B & C

Recommendations Construct Sedimentation basin and install riprap at culvert under Route 7 Construct Sedimentation basin and install riprap at culvert under Route 7 Oil & Grease/Metals & Sediment from Rt. 7 could be filtered through a sedimentation (sand) basin Oil & Grease/Metals & Sediment from Rt. 7 could be filtered through a sedimentation (sand) basin Install baffles in culvert under Rt. 7 to help decrease flow velocity Install baffles in culvert under Rt. 7 to help decrease flow velocity

Route 7 Settling Pond SEDIMENTATION BASIN