Water

Water (HMRMV)

Location: Greenbelt, MD 20770 Prince George's County
Country: United States of America

N 38° 58.752', W 76° 53.86'

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Inscription

[Greenbelt Park]

Greenbelt Park's streams and wetlands vividly demonstrate that what goes on outside the boundary of a park can have a profound effect on the park itself. Streambeds within the park are deeply scoured and eroded. The water that courses through them is laden with silt, and carries nutrients, oil, and other pollutants. Why? The acres of pavement around the park absorb no water; fertilizers and lubricants know no boundaries.
Water running through Greenbelt Park eventually finds its way into the Anacostia River, the Potomac, the Chesapeake, and finally the Atlantic. The National Park Service is working to rehabilitate the water that flows through the park by constructing wetland buffer areas and installing "check dams" - barriers that help slow the flow of water and filter urban pollution caused by cars and development.

Photo captions:
The reason for excessive runoff into Greenbelt Park is apparent in this aerial view (above). The park is virtually surrounded by pavement. Greenbelt is within the Anacostia River drainage. The river has been plagued by sediment and pollution. Efforts like those at Greenbelt Park will eventually help the river recover.
[Map of the Anacostia River watershed - highlighting Greenbelt Park and the U.S. Capitol in Washington, D.C.]

Development around the park pre-dated modern storm water management methods; during storms, water levels in park streams far exceed what they would have been 60 years ago. Many streambeds in the park are badly eroded.

The park has one natural wetland, just off the Blueberry Trail (the trail begins about 25 yards from the ranger station). Wetlands provide habitat for many species, slow the flow of water during storms, and help filter silt and impurities.
Details
HM NumberHMRMV
Tags
Placed ByNational Park Service, U.S. Department of the Interior
Marker ConditionNo reports yet
Date Added Tuesday, September 23rd, 2014 at 7:55pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18S E 335623 N 4316181
Decimal Degrees38.97920000, -76.89766667
Degrees and Decimal MinutesN 38° 58.752', W 76° 53.86'
Degrees, Minutes and Seconds38° 58' 45.12" N, 76° 53' 51.60" W
Driving DirectionsGoogle Maps
Area Code(s)301, 240, 410
Closest Postal AddressAt or near 120 MD-295, Greenbelt MD 20770, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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