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County
Perennial Streams
Fairfax County, Virginia —
Perennial streams in Fairfax County. Perennial streams are bodies of water flowing in a natural or man-made channel year-round, except during periods of drought. -
County
Drainage Districts
Lake County, Illinois —
Download In State Plane Projection Here. Drainage districts are local bodies formed for the purpose of draining, ditching, and improving land for agricultural and... -
County
Resource Protection Areas
Fairfax County, Virginia —
The Chesapeake Bay Preservation Ordinance was adopted to protect our local streams and one of the world's most productive estuaries, the Chesapeake Bay, from... -
County
Historical - ccgismap - Cook County Facilities
Cook County of Illinois —
Cook County GIS Dept map of Cook County Facilities in PDF format. The map shows all public Cook County Facilities, municipalities, Cook County highway jurisdiction,... -
County
Allegheny County Hydrology Areas
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
The Hydrology Feature Dataset contains photogrammetrically compiled water drainage features and structures including rivers, streams, drainage canals, locks, dams,... -
County
Allegheny County Hydrology Lines
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
The Hydrology Feature Dataset contains photogrammetrically compiled water drainage features and structures including rivers, streams, drainage canals, locks, dams,... -
County
Loudoun Conservation Easements
Loudoun County, Virginia —
Data Updated: Quarterly MetadataA conservation easement restricts the use or development of real property for the following reasons: -Retaining or protecting natural... -
County
Hydrologic Information Center - Multi-depth data
King County, Washington —
Data taken from multiple depths in King County bodies of water.