1. 1 Beaverdam Creek: An Environmental Perspective

2. 2 Chesapeake Bay Watershed

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5. 5 Anacostia Watershed Background Urban, over 75% Developed Size : 176 mi 2 ; avg. daily discharge: 138 cfs Drains both Piedmont and Coastal Plain 8.4 mile long tidal freshwater river portion Overall, approximately 25% impervious 805,000 + residents Diversity of people and streams

6. 6 Six Restoration Goals Goal 1:Reduce Pollutant Loads Goal 2:Enhance Aquatic diversity and Encourage a Quality Urban Fishery Goal 3:Restore Anadromous Fish Spawning Range Goal 4:Increase Acreage and Quality of Wetlands Goal 5:Expand Forest Cover and Riparian Buffers Goal 6:Increase Public Awareness, Citizen Participation and “Friends of Groups”

7. 7 Beaverdam Creek Background Drainage Area ~ 14.1 mi 2 Mainstem Length ~ 5 miles Median Baseflow ~ 10-12 cubic feet per second Located in the Coastal Plain Physiographic Province Imperviousness ~ 11 percent Population ~ 9,000+ Forested Area ~ 8.54 mi 2 (60.7 percent of the drainage area)

8. 8 Beaverdam Creek Subwatershed Research Road Soil Conservation Road Springfield Road Powder Mill Road Edmonston Road City of Greenbelt

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10. 10 How Does Beaverdam Creek Compare?

11. 11 SubwatershedWatershed Area Estimated % Impervious Surfaces AcresSq. Miles Sligo Creek7,404.711.57 35.0% Northwest Branch26,808.641.89 17.0% Paint Branch13,285.620.76 18.0% Little Paint Branch6,687.310.45 19.0% Indian Creek9,930.515.52 20.0% Upper Beaverdam Creek9,007.914.07 11.0% Still Creek2,550.24.0 15.1% Brier Ditch2,598.34.1 26.4% Northeast Branch4,268.96.67 36.0% Lower Beaverdam Creek10,064.215.73 39.0% Watts Branch2,404.83.76 29.0% Fort Chaplin318.70.50 36.3% Fort Dupont457.10.71 13.3% Pope Branch249.90.39 28.0% Estimated Percent Impervious Surface For Selected Anacostia Subwatersheds

12. 12 SubwatershedForestWatershed Area % Watershed Covered by Forest AcresSq. MilesAcresSq. Miles Sligo Creek 1,100.9 1.727,404.711.57 14.9% Northwest Branch 8,282.0 12.9426,808.641.89 30.9% Paint Branch 4,829.8 7.5513,285.620.76 36.4% Little Paint Branch 2,105.7 3.296,687.310.45 31.5% Indian Creek 3,064.5 4.799,930.515.52 30.9% Upper Beaverdam Creek 5,464.2 8.549,007.914.07 60.7% Still Creek 1,400.8 2.192,550.24.0 54.9% Brier Ditch 762.7 1.192,598.34.1 29.4% Northeast Branch 984.5 1.544,268.96.67 23.1% Lower Beaverdam Creek 2,515.2 3.9310,064.215.73 25.0% Watts Branch 529.4 0.832,404.83.76 22.0% Piney Run 91.2 0.141,014.61.59 9.0% Fort Chaplin 62.2 0.10318.70.50 19.5% Fort Dupont 292.3 0.46457.10.71 63.9% Pope Branch 89.8 0.14249.90.39 35.9% Fort Davis 171.4 0.27588.10.92 29.1% Fort Stanton 104.6 0.16366.90.57 28.5% Forest Cover For Selected Anacostia Subwatersheds

13. 13 Macroinvertebrates ScoresVerbal Rating 36 - 40Excellent 27 – 35Good 17 - 26Fair 0 - 16Poor Macroinvertebrate Index of Biotic Integrity (IBI)

14. 14 Fish ScoresVerbal Rating 47 – 50Excellent 35 – 46Good 23 – 34Fair 0 - 22Poor Fish Index of Biotic Integrity (IBI)