Datasets

Virginia Department of Environmental Quality

Implementation Watersheds (IP)

Polygon layer representing all watershed Boundaries for the Implementation Watersheds, including Approved, In Progress and Completed Implementation Areas. Click Here to see the Data Facts Sheet.

Chesterfield GIS County

CountySubWatersheds layer

Fairfax County

Watersheds

Watersheds within Fairfax County. There are 30 watersheds delineated across Fairfax County.

Virginia Department of Environmental Quality

TMDL Watersheds

This dataset depicts TMDL watershed boundaries. A TMDL watershed is the area covered by a TMDL equation. It consists of one or more impaired streams that have an assigned Cause Group Code (CGC). The CGC is the link…

Arlington County - GIS Portal

Watersheds Polygons

Watersheds for Arlington County, Va.