Information used to reference the data.
Title: 2010 Irrigated Lands for the Eastern Snake Plain Aquifer (ESPA)
Originators: Geospatial Technology Section, Idaho Department of Water Resources, GIS
Series name: First Series
Publication date: 20190214
Edition: First Edition
Data type: vector digital data
A characterization of the data, including its intended use and limitations.
Abstract:
This layer depicts polygons representing land within the ESPA boundary classified as either "irrigated", "non-irrigated" or "semi-irrigated", where the semi-irrigated classification typically depicts residential land. The creation of this dataset is a multi-year effort. The original line work that was used as a basis to create this dataset, is the Farm Service Agency’s (FSA) 2006 Common Land Unit (CLU) dataset, which is the most recent year the FSA distributed this data to the public. Project time constraints during the development of this dataset required acceptance of "less-than-perfectly-accurate" line work. In essence, line work deemed "close enough" to ground truth is acceptable for Eastern Snake Plain Aquifer (ESPA) modeling purposes. Field boundaries were then further refined using National Agriculture Imagery Program (NAIP) imagery, Digital Ortho Photo Quadrangle (DOQQ) imagery, or other high resolution imagery. Attribute assignments for irrigation status (irrigated, non-irrigated, and semi-irrigated) are determined using available Landsat imagery as background reference. Landsat imagery is typically 30-meter (Landsat5) or 15-meter (Landsat7) resolution. National Agriculture Inventory Program (NAIP) imagery, Digital Ortho Photo Quadrangle (DOQQ) imagery, and other in-house, scanned aerial imagery is used for determining irrigation status and refining the polygon geometry. The interpretation and classification process is described in detail in the report, "2006 Irrigated Land Classification for the Eastern Snake Plain Aquifer" archived on the IDWR website: Legal Actions > Delivery Call Actions > SWC > Archived Matters > Technical Working Group Documents (https://idwr.idaho.gov/legal-actions/delivery-call-actions/SWC/archived-matters.html#twg-documents)While data accuracy is highest inside the Eastern Snake Plain Aquifer Model boundary (ESPAM version 2), the layer does extend beyond the ESPAM2 boundary
Purpose:
This dataset was generated for use in the calculation of recharge and evapotranspiration in order to calibrate the Eastern Snake Plain Aquifer Hydrologic Model.
Dataset credit:
Idaho Department of Water Resources (IDWR)
Contact information for the individual or organization that is knowledgeable about the data.
Organization: Idaho Department of Water Resources
Person: Geospatial Technology Section
Position: GIS
Phone: (208) 287-4800
Fax: (208) 287-6700
Email: gisinfo@idwr.idaho.gov
Hours of service: 8:00 AM - 5:00 PM
Address type: mailing and physical
Address:
322 East Front Street
City: Boise
State or Province: Idaho
Postal code: 83720
How the data are represented, formatted and maintained by the data producing organization.
Data type: vector digital data
Native dataset environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9328
Time period(s) for which the data corresponds to the currentness reference.
Beginning date: 20100501
Ending date: 20101130
Currentness reference:
Irrigation status for the 2010 growing season.
The state of and maintenance information for the data.
Data status: Complete
Update frequency: None planned
Words or phrases that summarize certain aspects of the data.
Theme:
Keywords: Environment, Groundwater, Human, Hydrology, IDWR GIS Department, Irrigated Areas, Irrigation, Monitoring, Non-Irrigated, Regulatory, Semi-Irrigated, Surface Water, Water, Water Use
Keyword thesaurus: None
Theme:
Keywords: farming
Keyword thesaurus: ISO 19115 Topic Categories
Place:
Keywords: Eastern Snake Plain Aquifer, ESPA, Idaho, ID
Keyword thesaurus: None
Restrictions and legal prerequisites for accessing or using the data after access is granted.
Use constraints:
Access and Use Constraint: The Idaho Department of Water Resources is making this data available as a public service. The Idaho Department of Water Resources strives to ensure that all technical data and other information made available to the public is accurate, complete and in conformance with the Idaho Public Records Act. Neither the Department of Water Resources nor the State of Idaho, however, assumes any legal responsibility for the accuracy or completeness of the information contained on this site. Persons using information from this site for official purposes, or other purposes, for which accuracy and completeness are required, are hereby notified that they should first verify the information with the public records or other primary sources from which the information was obtained.Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of IDWR in any products derived from this dataset is appreciated.