Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Center for Advanced Land Management Information Technologies (CALMIT).
Publication_Date: 20030829
Title: Delineation of 2001 Land Use Patterns for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst
Description:
Abstract:
The raster land use/land cover data is a digital product of a supervised classification derived from multi-date 2001 Landsat Enhanced Thematic Mapper (ETM+) satellite imagery. Field data for crops were obtained using Farm Service Agency (FSA) reporting records from 2001. The National Wetland Inventory was used to assist the wetland classification. Urban areas were defined using 2000 TIGER census data and other information were gathered using 1993 and 1999 Digital Orthophoto Quarter Quadrangles (DOQQ's). Irrigation information was obtained from the Nebraska Department of Natural Resources, Public Power Districts, and Natural Resource Districts. Center pivots were on-screen digitized using the 2001 Landsat 7 ETM data. The cell size for the data is 93.48 feet and there are 25 different land use/land cover classes. The overall accuracy of the land cover classification was calculated at 82.7%.
Purpose:
This land use/land cover data provides information necessary to supplement the hydrologic modeling in the study area. The land use/land cover data can be used as a digital layer in various studies. It is useful as a background layer in a GIS, and can also be merged with other digital data (ie DEM's or DOQ's) to produce a hybrid digital file.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20030829
Currentness_Reference:
publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -104.253845
East_Bounding_Coordinate: -97.292228
North_Bounding_Coordinate: 42.584082
South_Bounding_Coordinate: 39.943929
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Land use/ Land cover
Theme_Keyword: Crop cover
Theme_Keyword: Classification
Theme_Keyword: Agriculture
Theme_Keyword: Crop Identification
Theme_Keyword: Landsat
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 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
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_Facsimile_Telephone: (402) 472-4608
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: Center for Advanced Land Management Information Technologies (CALMIT).
Publication_Date: 20030829
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 digital data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst
Source_Citation:
Citation_Information:
Originator: Center for Advanced Land Management Information Technologies (CALMIT).
Publication_Date: 20030829
Title: 2001 center pivot irrigated areas delineated for the Cooperative Hydrology Study in the Central Platte River Basin
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Lincoln, NE
Publisher: CALMIT
Online_Linkage:http://unlcms.unl.edu/ianr/snr/calmit/cohyst
Source_Citation:
Citation_Information:
Originator: Landsat 7
Title:
Landsat ETM Path 29, Rows 31 and 32
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: EROS Data Center, U.S. Geological Survey
Online_Linkage:https://eros.usgs.gov/usa
Source_Citation:
Citation_Information:
Originator: Landsat 7
Title:
Landsat ETM Path 30, Rows 31 and 32
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: EROS Data Center, U.S. Geological Survey
Online_Linkage:https://eros.usgs.gov/usa
Source_Citation:
Citation_Information:
Originator: Landsat 7
Title:
Landsat ETM Path 31, Rows 31 and 32
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: EROS Data Center, U.S. Geological Survey
Online_Linkage:https://eros.usgs.gov/usa
Source_Citation:
Citation_Information:
Originator: Landsat 7
Title:
Landsat ETM Path 32, Rows 31 and 32
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: EROS Data Center, U.S. Geological Survey
Online_Linkage:https://eros.usgs.gov/usa
Source_Citation:
Citation_Information:
Originator: Landsat 7
Title:
Landsat ETM Path 33, Rows 31 and 32
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: EROS Data Center, U.S. Geological Survey
Online_Linkage:https://eros.usgs.gov/usa
Process_Step:
Process_Description:
Multi-date Landsat 7 Enhanced Thematic Mapper (TM) satellite imagery were used to generate this land use classification for 2001. Cloud coverage dictated date selection to the greatest extent, although imagery were chosen to represent spring, summer, and fall growing conditions. Before the supervised classification was run, clouded and urban areas areas were removed from the imagery. Urban areas were defined using 2000 TIGER census data. Clouded areas were classified in a second stage, using an unsupervised classification with the remaining unclouded dates. Field data for crops were obtained using Farm Service Agency (FSA) reporting records from 2001. Spectral signatures for cropland were collected by identifying homogeneous areas defined on FSA reporting records. The National Wetlands Inventory (NWI) was used to locate wetland areas to collect spectral signatures. 1993 and 1999 Digital Orthophoto Quarter Quadrangles were used to locate signature areas for riparian and forested areas, roads, and non agricultural features. Multiple spectral signatures for each class were extracted and evaluated for continuity. Unrepresentative signatures were deleted. The remaining signatures were then used in a supervised classification on the multi-date imagery. After the classification algorithm was run, classes were evaluated for accuracy. A 'cluster busting' technique was applied to compensate for mixed classes. Irrigation information was obtained from FSA reporting records, Nebraska Department of Natural Resources, Public Power Districts, and Nebraska Natural Resource Districts. Center pivots were on-screen digitized using the 2001 Landsat ETM data. Once the land cover classification was complete, a 3X3 majority filter was applied to agricultural classes to minimize the remaining mixed pixels. The cell size for the data is 93.48 feet and there are 25 different land use/land cover classes. The overall accuracy of the land cover classification was calculated at 82.7%
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 10111
Column_Count: 20214
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:
Entity_Type:
Entity_Type_Label: landcover_2001
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: Land cover class
Attribute:
Attribute_Label: Count
Attribute_Definition: Number of cells associated with each value class
Attribute:
Attribute_Label: Landcover
Attribute_Definition: Landcover description associated with each value class
