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

Correlation with Other Data Sets

There appears to be close agreement between the data tabulated in this report and other data from sources that have been used to estimate original or existing wetland acreage. The total wetland acreage reported here for the 1980's is comparable with the findings of Frayer et al⁷². given the statistical range of variability. (Frayer et al. estimated 99 million acres existed as of the mid-1970's in the conterminous U.S. +/- 6.4%). Because the techniques for determining acreage totals for the various estimates are very different, it is useful to draw comparisons to other national data sets on wetlands.

Previous Section--Summary of Findings 1780's - 1980's
Return to Contents
Next Section--Estimates of Original Wetland Acreage

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/otherdat.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 07:05:29 EST
Menlo Park, CA [caww54]