Spatial Extent of Data
USGS Data Source
USGS Thesaurus Keywords
ISO 19115 Topic Category
Place Keywords
Gravity and Pressure Irrigation on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice IT03
This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CPIT03), Gravity and Pressure Irrigation Source (GPI) on agricultural land by county. Gravity and Pressure Irrigation Source are described as a "combination of Gravity and Pressure Irrigation." (U.S. Department of Agriculture, 1995) This data set was created with geographic information systems (GIS) and database management tools. The acres on which GPI'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.
| Author(s) |
United States Geological 
|
| Publication Date | 2004-01-01 |
| Beginning Date of Data | 1992 |
| Ending Date of Data | 1992 |
| Data Contact | |
| DOI | https://doi.org/10.5066/P9UICZ2X |
| Citation | Geological, U.S., 2004, Gravity and Pressure Irrigation on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice IT03: U.S. Geological Survey data release, https://doi.org/10.5066/P9UICZ2X. |
| Metadata Contact | |
| Metadata Date | 2020-11-17 |
| Related Publication | There was no related primary publication associated with this data release. |
| Citations of these data | No citations of these data are known at this time. |
| Access | public |
| License | http://www.usa.gov/publicdomain/label/1.0/ |
Harvest Date: 2024-08-24T04:55:37.909Z