Northern Prairie Wildlife Research Center


Home	About NPWRC	Our Science	Staff	Employment	Contacts	Common Questions	About the Site

Wetlands

Losses in the United States

1780's to 1980's

Figure 5

FIGURE 5: EXTENT AND LOCATION OF ARTIFICIALLY DRAINED AGRICULTURAL
LAND IN THE UNITED STATES, 1985

(Courtesy of U.S. Department of Agriculture Economic Research Service.) Frayer et al. estimated that 87 percent of the wetland losses from the mid-1950's to the mid-1970's were due to agricultural conversion.

Previous Section--Figures 3 & 4
Return to Contents

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/wetlands/wetloss/figure5.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 07:05:23 EST
Menlo Park, CA [caww54]