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COG is the one place in metropolitan Washington that regularly brings leaders together to develop solutions to the region's major challenges. COG prepares plans enabling the region to receive federal funding, provides members with research and data to inform decision-making, and offers a wide range of programs, including commuter services, cooperative purchasing, technical assistance and grants, and public outreach campaigns.

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Watersheds of Metropolitan Washington

This is a Land Use / Land Cover Map depicting forests, cropland, park land, waters features and urban and countryside development in more than 3000 square miles of the Metropolitan Washington Region as defined COG membership of the Metropolitan Washington Council of Governments (COG)

This map was developed through Land Sat imagery analzyed by RESAC (Regional Earth Science Applications Center) in conjunction with the COG Department of Environmental Programs and the National Park Service.

Analysis for this maps covers the 12 major land use / land cover classifications as defined by the Chesapeake Bay Program. The nature of Land Sat imagery is such that detailed visual images are not possible as they are when using high resolution satellite imagery or low-level aerial photography. However, t he 30 meters per pixel resolution of Land Sat imagery is very useful for high altitude land cover analysis using spectral analysis techniques.

Sophisticated digital analysis software has been used to calculate the land cover data for this map and has been 'trained' on higher resolution data to achieve accurate analysis to the 90th percentile.

Tags: Health, Public Safety, Homeland Security, Bioevent, Report, Planning,

Jan 01, 2022

This interactive map shows most of the minor and all of the major watersheds of metropolitan Washington, all of which drain into either the Potomac or Patuxent rivers.

Areas with blue or black hatch marks denote smaller watersheds that also drain into these rivers. The map depicts the smaller subwatersheds nested within the larger watersheds. When you click on a subwatershed, you can click on the triangle arrow at the top of the popup box (“next feature”) to toggle to see the name of the major watershed in which the subwatershed is located, the overall area of the major watershed, and its percent imperviousness. Use the map to identify the watershed in which you live or work.

Source: Metropolitan Washington Council of Governments

Tags:

Chesapeake Bay/Watershed