This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural
conservation practice (CPIS04), Stream, Lagoon or Other Waste Waster (not including tailwater recovery) as an Irrigation Source
(LWWIS) on agricultural land by county (nri_is04)
Dataset Identification:
Resource Abstract:
This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural
conservation practice (CPIS04), Stream, Lagoon or Other Waste Waster (not including tailwater recovery) as an Irrigation Source
(LWWIS) on agricultural land by county. Stream, Lagoon or Other Waste Waster (not including tailwater recovery) as an Irrigation
Source is described as an "impoundment made by excavation or earthfill for biological treatment of animal or other agricultural
waste." (U.S. Department of Agriculture, 1995) This data set was created with geographic information systems (GIS) and database
management tools. The acres on which LWWIS'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.
Citation
Title This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural
conservation practice (CPIS04), Stream, Lagoon or Other Waste Waster (not including tailwater recovery) as an Irrigation Source
(LWWIS) on agricultural land by county (nri_is04)
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 LWWIS dataset to produce ancillary information for
characterizing surface and ground-water sampling sites. Calculation of percentages of NAWQA study areas treated by Stream,
Lagoon or Other Waste Waster (not including tailwater recovery) as an Irrigation Source 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.
Browse image (thumbnail):
thumbnail file name:
file type: jpg
thumbnail file description:
Illustration of data set
Resource language:
eng; USA
Resource progress code:
completed
Resource Maintenance Information
maintenance or update frequency:
asNeeded
Resource Maintenance Information
maintenance or update frequency:
notPlanned
update scope:
attribute
Constraints on resource usage:
Constraints
Use limitation statement:
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.
Constraints on resource usage:
Legal Constraints
use constraint:
otherRestrictions
Other 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.
Constraints on resource usage:
Legal Constraints
Access Constraints
otherRestrictions
Other constraints
Access Constraints: None
Spatial representation type code:
grid
Processing environment:
Native Dataset Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.0.0.535
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude
-127.887748
eastBoundLongitude
-65.346810
northBoundLatitude
51.608770
southBoundLatitude
22.860749
Temporal Extent
1992-01-01
Additional information on resource:
The U.S. Geological Survey (USGS) initiated the National Water-Quality Assessment (NAWQA) Program in 1991 to accomplish two
primary objectives. The first objective was to assess the status and trends in the quality of the Nation's ground-water and
surface-water resources, and the second objective was to link the status and trends with an understanding of the natural and
human factors that affect water quality (Gilliom and others, 1995). "The National Resources Inventory is a statistically based
sample of land-use and natural resource conditions and trends on U.S. nonfederal lands. It is the most comprehensive database
of its kind ever attempted anywhere in the world. The Natural Resources Conservation Service's program for NRI serves as the
Federal Government's principal source of information on the status, condition, and trends of soil, water, and related resources
in the United States. The assessment of a nation's natural resources and environmental condition provided by the NRI requires
a nationally consistent database that allows for manipulation of various parameters in order to make accurate assessments.
For these manipulations and subsequent analyses to be useful for public policy considerations, the NRI database has a high
degree of reliability, looks at the natural resources over a period of time, and permits analyses at national, regional, and
local levels. The NRI is unique because it provides a nationally consistent database for all nonfederal lands, it features
data gathered and monitored in 1982, 1987, 1992, and 1997 by thousands of technical and natural resource data collection experts,
and it has a direct correlation with soils data, which permits analysis of resources in relation to the capability of the
land and in terms of soil resources and conditions. Informed and valid decisions are best made when based upon scientifically
derived data. The NRI has been developed to supply this type of information. The NRI database is powerful, credible, and scientifically
constructed. The present NRI is the result of many decades of development." (U.S. Department of Agriculture, 1995) Any use
of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although
this Federal Geographic Data Committee-compliant metadata file is intended to document the dataset in nonproprietary form,
as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology. Cited references Gilliom,
R.G., Alley, W.M., and Gurtz, M.E., 1995, Design of the National Water-Quality Assessment Program--occurrence and distribution
of water-quality conditions: U.S. Geological Survey Circular 1112, 33 p. U.S. Department of Agriculture. May 1995 (Reissued).
1992 National Resources Inventory, Natural Resources Conservation Service, Washington, DC, and Statistical Laboratory, Iowa
State University, Ames, Iowa, CD-ROM.
Credits:
Prepared as part of the National Water-Quality Assessment Program. Kerie J. Hitt, USGS, supplied the 1992 NRI database and
Naomi Nakagaki, USGS, supplied an updated version of the National Land Cover Dataset processed at 1-kilometer resolution.
point of contact
-
pointOfContact
individual Name Michael Wieczorek
organisation Name
U.S. Geological Survey
position Name Geographer
Contact information
Telephone
Voice (410) 238-4250
Fax (410) 238-4210
Address
8987 Yellow Brick Road, Baltimore, MD, 21237
Country USA
source description
Source Contribution: PCT is percentage of cell that is Agricultural land treated with CPIS04 conservation practice.Source
Type CD-ROM
source citation
Title 1992 National Resource Inventory
publication Date
1995-01-01
presentationForm
tableDigital
other Citation Details
U.S. Department of Agriculture, May 1995 (Reissued). 1992 National Resources Inventory, Natural Resources Conservation Service,
Washington, DC, and Statistical Laboratory, Iowa State University, Ames, Iowa, CD-ROM.
cited responsible party
-
publisher
organisation Name
SCS National Cartography & GIS Center
measure Description
Environmental Systems Research Institute, Inc. (ESRI) ARC 8.3 software was used to test the data for consistency against the
original NRI tabular data, 12/04/03. Several NRI codes in random counties were selected in both the derived GIS dataset and
the original tabular file. The total sum of area was compared and found to be the same.
QuantitativeAttributeAccuracy
name Of Measure Quantitative Attribute Accuracy Assessment
measure Description
Represents the percentage of a cell of agricultural land which Stream, Lagoon or Other Waste Waster (not including tailwater
recovery) as an Irrigation Source (WIS) are practiced.
evaluation Method Description
Nusser, S. M., and J. J. Goebel, 1997, The National Resources Inventory: A Long-Term Multi-Resource Monitoring Programme,
Environmental and Ecological Statistics, 4(3):181- 204.
notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version
FGDC-STD-001-1998) using the 2012-06-20T17:21:00 version of the FGDC RSE to ISO 19115-2 transform.
Metadata contact
-
pointOfContact
organisation Name
U.S. Geological Survey
position Name Ask USGS -- Water Webserver Team
Contact information
Telephone
Voice 1-888-275-8747 (1-888-ASK-USGS)
Address
445 National Center, Reston, VA, 20192
Country USA