Find a Commonwealth Resource
Fairfax County
Watersheds
Watersheds within Fairfax County. There are 30 watersheds delineated across Fairfax County.
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Updated Oct 8, 2026
Datasets
3 datasets
Loudoun County
Loudoun Streams
More Metadata Drainage is a base map data layer derived by automated processes and processed for cartographic representation at 1:2400 scale. The line features represent the any visible surface drainage feature, natural…
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Updated Oct 10, 2026
Loudoun County
Loudoun Soil Drains
More Metadata Historic drainage is used in agricultural and farm plans, stormwater management, comprehensive planning, floodplain management, and facility planning to provide a better understanding of what previous…
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Updated Oct 10, 2026