|Total Area: 2,457 acres
Average Imperviousness: 19%
Population Density: 5,509/mi2
Wetlands: 39 acres
Forest Cover: 57.4%
Deciduous: 707.6 acres
Coniferous: 149.4 acres
Mixed: 415.4 acres
Shrub/Scrub: 94.3 acres
|Local Watershed Group:Friends of Still Creek|
Still Creek is a free-flowing tributary of the Northeast Branch of the Anacostia River; the stream joins the Northeast Branch at the confluence with Brier Ditch in Riverdale Park, Maryland. The subwatershed is generally bound by Greenbelt Road (MD Route 193) and Good Luck Road to the north and east, Paint Branch Parkway to the south, and Kenilworth Avenue (MD Route 201) to the west. The entire subwatershed is located within Prince George's County. Major Still Creek tributaries include: Westchester tributary, North Branch tributary, Schrom Hills Park tributary, and Deep Creek.
Dominant Land Uses:The dominant land uses in the Still Creek subwatershed are forest cover (55%) and residential/commercial development (32%). Approximately 43% of the watershed is owned by the U.S. Department of the Interior National Park Service and operated as Greenbelt National Park.
Physical Characteristics: The Still Creek subwatershed is approximately 2,457 acres (3.8 mi2) in size and approximately 19 percent impervious. The highly incised Still Creek is located entirely within the Coastal Plain physiographic province. Geologically, the Coastal Plain portion of the Anacostia watershed is characterized by largely unconsolidated sedimentary deposits of sands, gravels, silts and clays. Elevations in the subwatershed range from 234 feet at the Still Creek/ Patuxent River watershed divide to 40 feet at the confluence with Brier Ditch. With an average gradient of 0.35 percent over 6.3 miles of its main stem length, Still Creek flows from its mixed commercial/medium density residential headwaters, through the heavily forested NPS Greenbelt National Park, which covers much of the middle and lower main stem sections.
Biological Characteristics: Still Creek is designated a Use I stream (i.e., suitable for water recreation and support of aquatic life) by MDE. The County's one Still Creek Index of Biotic Integrity (IBI) sampling station (lower main stem) was rated as having partially supporting physical aquatic habitat conditions present. In general, both main stem and tributary macroinvertebrate and fish communities remain impacted. The condition of macroinvertebrate populations in both the Still Creek main stem and tributary network is generally poor to fair. Main stem fish populations were rated as being fair.
Several physical barriers to both resident and anadromous fish movement and migration are present (e.g., concrete channelized stream sections, perched road culverts, piped stream sections, etc). These, as well as other barriers in Still Creek have been identified and remain as a restoration challenge for this subwatershed. It should be noted that efforts on the part of Prince George's County and others to remove fish blockages, control stormwater runoff, restore both tributary and main stem instream habitat, create wetlands, reforest riparian corridors, and reintroduce migratory fish to the subwatershed remain on-going.
Condition Summary: After Upper Beaverdam Creek (60.7 percent forested), Still Creek is the second most heavily forested subwatershed within the Maryland portion of the Anacostia watershed. This is attributable to the preservation of large woodland areas via the 1950 creation of Greenbelt National Park. As of 2005, approximately 95 percent of the total subwatershed area was developed, and roughly 70 percent of the stream miles have an adequate riparian forest buffer (i.e., 300-foot total width). Initial indications are that far more stormwater retrofitting and stream restoration efforts are needed to restore the aquatic ecosystem of the Still Creek subwatershed. Planned future projects include, but are not limited to: stormwater management focusing on the employment of low impact development (LID) and environmentally sensitive design (ESD), wetland creation, aquatic and terrestrial habitat restoration, fish barrier modification/removal, invasive plant management, trash reduction and potentially additional fish reintroductions.To get involved in protecting your Anacostia subwatershed contact the Friends of Still Creek.