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Analysis Products on Irrigation

Abstract: The Irrigation maps are split into two section. The first set of maps
are from the preliminary 1997 NRI data. The following set are from 1992
and earlier data. Both sets of maps deal with irrigation in
croplands. Some of the irrigation systems and types depicted are
pressure and gravity. The maps also look at the changes in irrigation

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Description: The National Resources Inventory covers non-federal land in the United
States - some 75 percent of the country's land base - and is conducted
every five years by the USDA Natural Resources Conservation Service in
cooperation with Iowa State University. It captures data from 800,000
statistically selected locations on land cover, land use, soil
erosion, prime farmland soils, wetlands, habitat diversity, selected
conservation practices, and other natural resource information. The
information is statistically reliable for national, statewide, and
multi-county use.

Description: The Natural Resources Conservation Service is a Federal agency that
works in partnership with the American people to conserve and sustain
our natural resources.
Geographic Coverage
Spatial coordinates   
  N: 48.24   S: 22.88   E: -65.36   W: -127.87
  N: 67.57   S: 49.18   E: -117.38   W: 157.56
  N: 22.22   S: 18.9   E: -154.76   W: -160.25
  N: 18.51   S: 17.67   E: -64.56   W: -67.96
  N: 15.29   S: 13.23   E: 145.9   W: 144.54
  N: 14.38   S: 14.16   E: -169.42   W: -170.84

Data Set Citation
Dataset Title: NRCS/NRI State of the Land -- Maps, Facts, & Figures on Irrigation
Version: Not provided
Issue Identification: 1997
Data Presentation Form: Maps, Postscript, summary table, ASCII text
Online Resource:
Temporal Coverage
Start Date: 1997-07-01
Stop Date: 1998-10-31
Quality The 1997 NRI data should be used only as preliminary data at this
time. A problem was discovered in the 1997 NRI results on March 27,
2000. Please check the NRI home page,
Data Center
Natural Resources Institute, National Resources Conservation Service, U. S. Department of Agriculture Supplemental Info
Data Center URL:

Data Center Personnel
Email: nri at
Contact Address:
Resource Assessment Division
USDA - Natural Resources Conservation Service
P.O. Box 2890
City: Washington
Province or State: DC
Postal Code: 20013
Country: USA
Distribution Media: Electronic
Distribution Format: Maps, Postscript, summary table, ASCII text
Fees: Free
Phone: (301) 504-2271
Fax: (301) 504-2230
Email: Warren.Lee at
Contact Address:
Resource Inventory Division
USDA - Natural Resources Conservation Service
Mail Stop 5474
5601 Sunnyside Ave
City: Beltsville
Province or State: MD
Postal Code: 20705-5000
Country: USA
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2001-01-02
Last DIF Revision Date: 2018-11-12