The west slope irrigated acres database was developed in a cooperative project with the Bureau of Reclamation for the consumptive use model of the Colorado River Decision Support System.
REQUIRED: A summary of the intentions with which the data set was developed.
The coverage was updated again in 2003 to reflect additional structure to parcel information provided by water commissioners during the 2000 irrigated acreage assessment.
REQUIRED: The basis on which the time period of content information is determined.
REQUIRED: Restrictions and legal prerequisites for using the data set after access is granted.
West slope data developed in cooperation with BOR for the consumptive use model of the Colorado River Decision Support System. Irrigated lands deliniated using Landsat TM imagery (25m). In additon, for further boundary enhancement, on-screen digitizing (SPOT panchromatic imagery base (10m)) was used. Other information was digitized from mylars developed as orthophoto overlays at 1:24,000.
1313 Sherman St., Suite 721
Updates to the original 1993 irrigated acres coverage were made during the fall of 2003. The revisions focused focused on refining ditch to irrigated parcel assignments based on additional information provided by water commissioners in their review of the 2000 irrigated acreage effort.
2000 Clay Street, Suite 300
Metadata imported.
Internal feature number.
ESRI
Feature geometry.
ESRI
Caveats: The irrigated are not always irrigated by a single ditch source. As many as 9 different ditch structures (WDID_1-Wdid_9) may be assigned to each irrigated parcel. The corresponding percent of each ditch providing water to the parcel is also assigned. (Percent_1-Percent_9). Crop_type: Alfalfa Dry Beans Corn Potatoes Grass Pasture Small Grains Orchard w/o cover Orchard w/ cover Vegetables Y - Grapes Irr_type D - Drip System F - Flood G - Grated Pipe R - Furrow S - Sprinkler X - Unknown Data Definition Parcel_ID: Unique identifier for every polygon Crop_type: Crop Type Irr_type: Irrigation method Acres: Total number of acres for that parcel Wdid_1 through Wdid_9: Ditch providing irrigation water to parcel Percent_1 through Percent_9: Percent of land served by Wdid_1 through Wdid_9
1313 Sherman St., Suite 721
1313 Sherman St., Suite 721