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  1. Water Mission Area National Spatial Data Infrastructure Datasets
  2. Irrigation Canals or Laterals on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice 320

Irrigation Canals or Laterals on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice 320

Dates

Release Date
2004-01-01
Publication Date

Citation

Wieczorek, M.E., 2004, Irrigation Canals or Laterals on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice 320: U.S. Geological Survey data release, https://doi.org/10.5066/P9V2TUMF.

Summary

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CP320), Irrigation Canals or Laterals on agricultural land by county. An Irrigation Canals or Laterals (ICL) is a "permanent channel constructed to convey irrigation water from the source of supply to one or more irrigated areas." (U.S. Department of Agriculture, 1995) This data set was created with geographic [...]

Contacts

Point of Contact :
Michael Wieczorek, U.S. Geological Survey
Originator :
Michael Wieczorek
Metadata Contact :
U.S. Geological Survey
SDC Data Owner :
Maryland-Delaware-D.C. Water Science Center
USGS Mission Area :
Water Resources

Attached Files

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nri92_cp320.xml
Original FGDC Metadata
View 		27.29 KB application/fgdc+xml
nri_cp320.tgz 269.7 KB application/x-gzip
cp320.jpg thumbnail 90.31 KB image/jpeg

Purpose

This dataset was created for two main purposes; (1) summarize and provide refined spatial detail to attributes of agricultural practices from the 1992 NRI dataset; and (2) to support hydrologic modeling. The U. S. Geological Survey's (USGS) National Water-Quality Assessment (NAWQA) program is using the spatially refined ICL dataset to produce ancillary information for characterizing surface and ground-water sampling sites. Calculation of percentages of NAWQA study areas treated by Irrigation Canals or Laterals is one example of the type of use of this data set. The 1992 NRI data was used because it was created in the same early to mid-1990s time frame as the NLCD. NAWQA plans on processing the NRI in this fashion every 5 years as new NRI and NLCDE data are published.
Illustration of data set
Illustration of data set

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Provenance

These data were originally released on the Water Mission Area National Spatial Data Infrastructure Node and were migrated to sciencebase.gov in 2023. These data were released prior to the October 1, 2016 effective date for the USGS's policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9V2TUMF

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