Hydrological Features

This data was developed for use by Prince William County staff in the preparation of digital map products. It contains hydrologic features within Prince William County, Virginia. The collection of aerial photography and production of an ortho quality DEM and orthophotography was executed to capture the existing ground conditions at a specific point in time for the purpose of GIS analysis. Orthophotography along with DEM data typically provides an accurate base for digitally representing geographic features upon which a GIS is built. The Virginia Geographic Information Network Division (VGIN) is the lead public agency in the Commonwealth for spatial data and GIS. VGIN's mission is to facilitate the cost-effective development and use of spatial data, GIS, and related technologies in organizations throughout the Commonwealth. 2017 Prior major update completed by Sanborn in 2012 from 2011 imagery