Engelsby BrookEngelsby BrookFinal ProjectFinal ProjectENSC 285BENSC 285BPeter DufaultPeter Dufault

Burlington & South Burlington, Burlington & South Burlington, VermontVermont

April 29, 2005April 29, 2005

Engelsby BrookEngelsby Brook

1.0 Square Mile Watershed1.0 Square Mile Watershed 4 Reaches, 1 Tributary4 Reaches, 1 Tributary Upper Reaches in Golf CourseUpper Reaches in Golf Course

(Burlington Country Club)(Burlington Country Club) Urban SettingUrban Setting Drainage to Lake ChamplainDrainage to Lake Champlain

Engelsby Brook Engelsby Brook April 2005April 2005

USGS Gauge Height on lowest reachUSGS Gauge Height on lowest reach1.0 Foot Change in Gauge Height1.0 Foot Change in Gauge Height

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

Photo Date: March 30, 2005

Engelsby BrookEngelsby Brook

Weir/Impoundment Weir/Impoundment Serves as a Serves as a

junction between junction between the Main Stem and the Main Stem and Southern TributarySouthern Tributary

Regulates FlowRegulates Flow

Location: Prospect Location: Prospect St.St.

Photo Date: March 30, 2005

Engelsby BrookEngelsby Brook

Channel Straightening (575’) on Channel Straightening (575’) on Southern TributarySouthern Tributary

Golf Course in DistanceGolf Course in Distance

Photo Date: March 30, 2005

Location: Route 7Location: Route 7--Near Former Panda Inn RestaurantNear Former Panda Inn Restaurant

Bank ErosionBank Erosion Sediment into Sediment into

brookbrook

Erosion near Erosion near parking lot parking lot

Oil & Grease from Oil & Grease from Rt. 7Rt. 7

Photo Date: March 30, 2005

Englesby BrookEnglesby BrookLowest Reach, M.01Lowest Reach, M.01

Divided ChannelDivided Channel Debris JamDebris Jam

Watershed & Watershed & SubwatershedsSubwatersheds

M.01

M.03

T.01

M.02

= Reach Break

Route 7 AreaRoute 7 Area

Route 7

Location of Significant ImpactsStart of 325’ long culvert

Subaru

Reach M.03Reach M.03

Instream Channel Instream Channel ModificationModification

Floodplain Modification and Floodplain Modification and Planform ChangesPlanform Changes

Impact RatingImpact Rating

ConclusionsConclusions

Upper ReachesUpper Reaches Channel StraighteningChannel Straightening Heavy Fertilizer use from golf courseHeavy Fertilizer use from golf course

Lower ReachesLower Reaches Channel straighteningChannel straightening Significant Urbanization Significant Urbanization

Impact scores of 13-17Impact scores of 13-17 Stream types B & CStream types B & C

RecommendationsRecommendations

Construct Sedimentation basin and Construct Sedimentation basin and install riprap at culvert under Route install riprap at culvert under Route 77

Oil & Grease/Metals & Sediment Oil & Grease/Metals & Sediment from Rt. 7 could be filtered through from Rt. 7 could be filtered through a sedimentation (sand) basina sedimentation (sand) basin

Install baffles in culvert under Rt. 7 Install baffles in culvert under Rt. 7 to help decrease flow velocity to help decrease flow velocity

Route Route 77

Settling Pond

SEDIMENTATIONBASIN