Irrigation Comparison (GRID) Metadata 1982- 2001

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Center for Advanced Land Management Information Technologies (CALMIT).
Publication_Date: 20040115
Title: 1982, 1997 and 2001 Irrigation Estimates and Comparisons for The Cooperative Hydrology Study in the Central Platte River Basin (COHYST)
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst
Description:
Abstract:
This raster data layer provides an estimate and comparison of 1983, 1997 and 2001 irrigated areas for the COHYST Study area within the Nebraska Boundary.
Purpose:
Identifying irrigated areas within the Central Platte River Basin provides important information necessary to supplement the hydrologic modeling in the study area. Irrigation data serve a variety of purposes, from water resources planning to land use planning. This data could also be used for watershed analysis and other natural resource management activities.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20040115
Currentness_Reference:
publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -104.180907
East_Bounding_Coordinate: -95.087552
North_Bounding_Coordinate: 43.070572
South_Bounding_Coordinate: 39.903600
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Irrigated Agricultural Areas
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Central Platte River Basin
Place_Keyword: Nebraska
Stratum:
Stratum_Keyword_Thesaurus: None
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: Growing Season 1982
Temporal_Keyword: Growing Season 1997
Temporal_Keyword:
Growing Season 2001
Access_Constraints: None
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Wardlow
Contact_Organization: Center For Advanced Land Management Information Technologies (CALMIT)
Contact_Position: Director
Contact_Address:
Address_Type: mailing address
Address:
113 Nebraska Hall
Address:
University of Nebraska - Lincoln
City: Lincoln
State_or_Province: NE
Postal_Code: 68588-0517
Contact_Voice_Telephone: 402.472.6729
Contact_Electronic_Mail_Address: bwardlow2@unl.edu
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800
Data_Quality_Information:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: CALMIT
Title:
Delineation of 1982 Land Use Patterns for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: raster thematic data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT, University of Nebraska - Lincoln
Online_Linkage: http://unlcms.unl.edu/ianr/snr/calmit/cohyst/
Source_Citation:
Citation_Information:
Originator: CALMIT
Title:
1982 center pivot irrigated areas delineated for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: vector polygon data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT, University of Nebraska - Lincoln
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst/
Source_Citation:
Citation_Information:
Originator: CALMIT
Title:
1982 other irrigated areas (non center pivot) delineated for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: vector polygon data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT, University of Nebraska - Lincoln
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst/
Source_Citation:
Citation_Information:
Originator: CALMIT
Title:
Delineation of 1997 Land Use Patterns for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: raster thematic data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT, University of Nebraska - Lincoln
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst/
Source_Citation:
Citation_Information:
Originator: CALMIT
Title:
1997 center pivot irrigated areas delineated for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: vector polygon data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT, University of Nebraska - Lincoln
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst/
Source_Citation:
Citation_Information:
Originator: CALMIT
Title:
1997 other irrigated areas (non center pivot) delineated for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: vector polygon data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT, University of Nebraska - Lincoln
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst/
Source_Citation:
Citation_Information:
Originator: CALMIT
Title:
Delineation of 2001 Land Use Patterns for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: raster thematic data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT, University of Nebraska - Lincoln
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst/
Source_Citation:
Citation_Information:
Originator: CALMIT
Title:
2001 center pivot irrigated areas delineated for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: vector polygon data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT, University of Nebraska - Lincoln
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst/
Source_Citation:
Citation_Information:
Originator: CALMIT
Title:
2001 other irrigated areas (non center pivot) delineated for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: vector polygon data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT, University of Nebraska - Lincoln
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst/
Process_Step:
Process_Description:
Agricultural areas classified as irrigated were queried and subset from the 1983, 1997, and 2001 COHYST land cover classifications. Irrigated areas from 1982 were re coded and given a value of 2, irrigated areas from 1997 were re coded and given a value of 5, and areas found to be irrigated in 2001 were re coded and given a value of 10. These three separate recoded raster files were added together in Arc GRID module. The resulting raster grid has seven classes 2, 5, 7, 10, 12, 15, and 17. Cells with a value of 2 represent areas irrigated only in 1982, cells with a value of 5 represent areas irrigated only in 1997, cells with a value of 7 represent areas irrigated in 1982 and 1997, cells with a value of 10 represent areas irrigated only in 2001, cells with a value of 12 represent areas irrigated in 1982 and 2001, cells with a value of 15 represent areas irrigated in 1997 and 2001, and cells with a value of 17 represent areas irrigated in 1982, 1997, and 2001.
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 11961
Column_Count: 26019
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 2600
Lambert_Conformal_Conic:
Standard_Parallel: 40.000000
Standard_Parallel: 43.000000
Longitude_of_Central_Meridian: -100.000000
Latitude_of_Projection_Origin: 39.833333
False_Easting: 1640416.666667
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.004096
Ordinate_Resolution: 0.004096
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Detailed_Description:
Entity_Type:
Entity_Type_Label:
irr_comp_82_01
Attribute:

Attribute_Label: ObjectID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Value
Attribute_Definition:
Irrigation Comparison Class
Attribute:
Attribute_Label: Count
Attribute_Definition:
Number of cells associated with each value class
Attribute:
Attribute_Label: Type
Attribute_Definition:
Irrigation class descriptions
Attribute:
Attribute_Label: Acres
Attribute_Definition:
Acreage totals for each irrigation class
Distribution_Information:
Resource_Description: Downloadable Data
Online_Linkage: http://unlcms.unl.edu/ianr/snr/calmit/cohyst
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 14.7

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