Water resource regions

Water resource regions

Detailed Description

Water resource regions - The gray lines are state lines, the blue lines are major rivers, and the white lines are water-resources region boundary lines

Details

Image Dimensions: 400 x 240

Date Taken:

Location Taken: US

Credits

Seaber, P.R., Kapinos, F.P., and Knapp, G.L., 1987, Hydrologic units maps: U.S. Geological Survey Water-Supply Paper 2294, 63 p.