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Spatial Extent of Data

USGS Data Source

USGS Thesaurus Keywords

National Resources Inventory, Irrigation Sources, Combination, inlandWaters

ISO 19115 Topic Category

geoscientificInformation, inlandWaters, environment

Place Keywords

Conterminous United States

Combination of Irrigation Sources on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice ISO05

This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CPIS05), Combination of Irrigation Sources (CIS) on agricultural land by county. A combination of irrigation sources means one or more sources of irrigation, such as wells, ponds, or streams are used on agricultural land. (U.S. Department of Agriculture, 1995) This data set was created with geographic information systems (GIS) and database management tools. The acres on which CIS's are applied were totaled at the county level in the tabular NRI database and then apportioned to a raster coverage of agricultural land within the county based on the Enhanced National Land Cover Dataset (NLCDe) 1-kilometer resolution land cover grids (Nakagaki, 2003). Federal land is not considered in this analysis because NRI does not record information on those lands.

Get Data and Metadata
Author(s) United States Geological orcid
Publication Date 2004-01-01
Beginning Date of Data 1992
Ending Date of Data 1992
Data Contact
Michael Wieczorek
DOI https://doi.org/10.5066/P98CNRC5
Citation Geological, U.S., 2004, Combination of Irrigation Sources on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice ISO05: U.S. Geological Survey data release, https://doi.org/10.5066/P98CNRC5.
Metadata Contact
Water Mission Area
Metadata Date 2020-11-17
Related Publication
Citations of these data No citations of these data are known at this time.
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License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: ScienceBase
Harvest Date: 2025-01-02T19:36:12.363Z