Pressure Irrigation on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice IT02

Metadata Updated: November 12, 2020

This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CPIT02), Pressure Irrigation Source (PI) on agricultural land by county. Pressure Irrigation Source is described as irrigation "delivered to the farm and/or field in pump or elevation induced pressure pipelines; and water is distributed across the field by: 1) Sprinkle irrigation (center pivot, linear move, traveling gun, side roll, hand move, big gun, or fixed set sprinklers), or, 2) Micro irrigation (drip emitters, continuous tube bubblers, micro spray or micro sprinklers)." (U.S. Department of Agriculture, 1995) This data set was created with geographic information systems (GIS) and database management tools. The acres on which PI'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.

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date February 11, 2005
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 2004 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from DOI Open Data

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Illustration of data set

Additional Metadata

Resource Type Dataset
Metadata Date February 11, 2005
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 2004 (publication)
Responsible Party U.S. Geological Survey (Point of Contact)
Contact Email
Access Constraints Use Constraints: The NRI dataset is tabulated at the county level only and deemed accurate for this analysis (Nusser and Goebel, 1997). The spatial distribution of this data also assumes the NLCDe has an acceptable accuracy for this analysis (Nakagaki, 2003). Therefore this data set does not provide specific locations of a particular NRI code but the percent of county agricultural land that practices NRI code 607 over the total agricultural land in a particular county., Access Constraints: None
Bbox East Long -65.346810
Bbox North Lat 51.608770
Bbox South Lat 22.860749
Bbox West Long -127.887748
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Illustration of data set
Graphic Preview File
Graphic Preview Type jpg
Licence Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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