1. Maps showing geologic and hydrologic factors affecting land-use planning in the Culpeper Basin, Virginia and Maryland [cartographic material] Yale Public content 1989. 2002-06-01T04:00:00Z. 2015-07-14T22:20:38Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. cartographic image. Public. Culpeper Basin (Va. and Md.).