Geographic Information
2011 Irrigated Lands for the Eastern Snake Plain Aquifer (ESPA)
2011 Irrigated Lands for the Eastern Snake Plain Aquifer (ESPA)
FGDC Metadata
Description Spatial Data Structure Data Source Metadata
+ Resource Description
Citation
Information used to reference the data.
Title: 2011 Irrigated Lands for the Eastern Snake Plain Aquifer (ESPA)
Originators: Geospatial Technology Section, Idaho Department of Water Resources
Publisher: Idaho Department of Water Resources
Publication place: Boise, ID
Publication date: 20090101
Data type: vector digital data
Description
A characterization of the data, including its intended use and limitations.
Abstract:
Land within the county classified as "irrigated", "non-irrigated", or "semi-irrigated." The classification is based on edited CLU (Common Land Unit) polygons from the Farm Services Administration. "Semi-irrigated" is generally residential land.
Purpose:
This data set was generated to use in the calculation of recharge and evapotranspiration in order to calibrate the Eastern Snake Plain Aquifer Hydrologic Model.
Supplemental information:
The key attribute is "STATUS_2011." The interpretation and classification process is described in detail in the report, "2006 Irrigated Land Classification for the Eastern Snake Plain Aquifer" (https://www.idwr.idaho.gov/Browse/News/WaterCalls/SWC/irrigated-nonirrigated%20by%20county/2006%20irrigated-nonirrigated%20classification%20report.pdf)
Dataset credit:
Idaho Department of Water Resources | GIS Section Boise, Idaho
Point Of Contact
Contact information for the individual or organization that is knowledgeable about the data.
Organization: Idaho Department of Water Resources
Person: Margie Wilkins
Position: GIS Analyst
Phone: (208) 287-4800
Fax: (208) 287-6700
Email: gisinfo@idwr.idaho.gov
Instructions:
http://www.idwr.idaho.gov/GeographicInfo/
Address type: mailing and physical
Address:
322 East Front Street
City: Boise
State or Province: ID
Postal code: 83720
Data Type
How the data are represented, formatted and maintained by the data producing organization.
Data type: vector digital data
Native dataset environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143
Time Period of Data
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.
Status
The state of and maintenance information for the data.
Data status: Complete
Update frequency: As needed
Key Words
Words or phrases that summarize certain aspects of the data.
Theme:
Keywords: Regulatory, Monitoring, Environment, Ground Water, Water, Human
Keyword thesaurus: EPA GIS Keyword Thesaurus
Place:
Keywords: Snake Plain Aquifer, Snake River Plain, Idaho
Keyword thesaurus: None
Data Access Constraints
Restrictions and legal prerequisites for accessing or using the data after access is granted.
Access constraints:
None
Use constraints:
None
+ Spatial Reference Information
Horizontal Coordinate System
Reference system from which linear or angular quantities are measured and assigned to the position that a point occupies.
Coordinate System Details
Map projection
Map projection name: NAD 1983 Idaho TM
Scale factor at central meridian: 0.9996
Longitude of central meridian: -114.0
Latitude of projection origin: 42.0
False easting: 2500000.0
False northing: 1200000.0
Planar Coordinate Information
Planar coordinate encoding method: coordinate pair
Coordinate representation:
Abscissa resolution: 0.0000000027939677238464355
Ordinate resolution: 0.0000000027939677238464355
Planar distance units: meter
Geodetic model
Horizontal datum name: D North American 1983
Ellipsoid name: GRS 1980
Semi-major axis: 6378137.0
Denominator of flattening ratio: 298.257222101
Spatial Domain
The geographic areal domain of the data that describes the western, eastern, northern, and southern geographic limits of data coverage.
Bounding Coordinates
In Unprojected coordinates (geographic)
Boundary Coordinate
West -115.311656 (longitude)
East -110.95249 (longitude)
North 44.879291 (latitude)
South 41.957893 (latitude)
+ Data Structure and Attribute Information
Overview
Summary of the information content of the data, including other references to complete descriptions of entity types, attributes, and attribute values for the data.
Direct spatial reference method: Vector
Attributes of CLU_11_ESPA_20160527
Detailed descriptions of entity type, attributes, and attribute values for the data.
Description:
Vector polygons which represent features with discrete boundaries
Source:
ESRI
Attributes
OBJECTID
Definition:
Internal feature number.
Attribute values: Sequential unique whole numbers that are automatically generated.
Attribute definition source:
ESRI
ACRES
Definition:
area in acres - must be updated manually
Attribute value accuracy: Positive real numbers that must be manually calculated
Attribute values: Positive real numbers that must be manually calculated
Attribute definition source:
IDWR
Shape
Definition:
Feature geometry.
Attribute values: Coordinates defining the features.
Attribute definition source:
ESRI
STATUS_2011
Shape_Length
Definition:
Length of feature in internal units.
Attribute values: Positive real numbers that are automatically generated.
Attribute definition source:
ESRI
Shape_Area
Definition:
Area of feature in internal units squared.
Attribute values: Positive real numbers that are automatically generated.
Attribute definition source:
ESRI
SDTS Feature Description
Description of point and vector spatial objects in the data using the Spatial Data Transfer Standards (SDTS) terminology.
Spatial data transfer standard (SDTS) terms
Feature class
Type: GT-polygon composed of chains
Count: 266128
+ Data Source and Process Information
Process Steps
Information about events, parameters, tolerances and techniques applied to construct or derive the data.
Process step information
Process Step 1
Process description:
Irrigation status is determined using 2011 Landsat imagery for the following dates: 
Path38Row30: 06-04, 07-06, 07-22, 08-07, 08-23, 09-08, 09-24  and  
Path39Row29: 06-27, 07-13, 07-29, 08-14, 08-30, 09-15  and  
Path39Row30: 06-11, 06-27, 07-13, 07-29, 08-14, 08-30, 09-15  and  
Path40Row29: 07-04, 07-20, 07-28, 08-05, 08-21, 09-06, 09-22  and  
Path40Row30: 05-01, 06-10, 06-26, 07-04, 07-20, 08-05, 08-21, 09-06, 09-22    and  
Path40Row31: 06-02, 07-04, 07-20, 08-05, 08-21, 09-06, 09-22     and
Path41Row29: 06-25, 07-11, 07-27, 08-12, 08-28, 09-13, 09-29    and  
Path41Row30: 06-09, 06-25, 07-11, 07-27, 08-12, 08-28, 09-13, 09-29    and  

Process date: 20100501
Process Step 2
Process description:
The creation of this dataset is a multi-year effort. Original linework is from the Farm Service Agency's (FSA) Common Land Unit (CLU) dataset of or around 2006. FSA no longer distributes this data to the public. Project time constraints require acceptance of "less-than-perfectly-accurate" linework. In essence, line work deemed "close enough" to ground truth is acceptable for Eastern Snake Plain Aquifer (ESPA) modeling purposes. 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 (l5) or 15-meter (l7) 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 linework geometry. This dataset extends beyond the Eastern Snake Plain Aquifer Model boundary (ESPAM2). Line and attribute correctness is more accurate within ESPAM2 boundary.
Process date: 20100501
+ Metadata Reference
Metadata Date
Dates associated with creating, updating and reviewing the metadata.
Last updated: 20130611
Metadata Point of Contact
Contact information for the individual or organization responsible for the metadata information.
Organization: IDWR
Person: Margie Wilkins
Position: GIS Analyst
Phone: 208-287-4800
Email: margie.wilkins@idwr.idaho.gov
Address type: mailing
Address:
322 East Front Street
City: Boise
State or Province: ID
Postal code: 83720-0098
Metadata Standards
Description of the metadata standard used to document the data and reference to any additional extended profiles to the standard used by the metadata producer.
Standard name: FGDC Content Standard for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
Time convention: local time
FGDC Plus Metadata Stylesheet
Stylesheet: FGDC Plus Stylesheet
File name: FGDC Plus.xsl
Version: 2.3
Description: This metadata is displayed using the FGDC Plus Stylesheet, which is an XSL template that can be used with ArcGIS software to display metadata. It displays metadata elements defined in the Content Standard for Digital Geospatial Metadata (CSDGM) - aka FGDC Standard, the ESRI Profile of CSDGM, the Biological Data Profile of CSDGM, and the Shoreline Data Profile of CSDGM. CSDGM is the US Federal Metadata standard. The Federal Geographic Data Committee originally adopted the CSDGM in 1994 and revised it in 1998. According to Executive Order 12096 all Federal agencies are ordered to use this standard to document geospatial data created as of January, 1995. The standard is often referred to as the FGDC Metadata Standard and has been implemented beyond the federal level with State and local governments adopting the metadata standard as well. The Biological Data Profile broadens the application of the CSDGM so that it is more easily applied to biological data that are not explicitly geographic (laboratory results, field notes, specimen collections, research reports) but can be associated with a geographic location. Includes taxonomical vocabulary. The Shoreline Data Profile addresses variability in the definition and mapping of shorelines by providing a standardized set of terms and data elements required to support metadata for shoreline and coastal data sets. The FGDC Plus Stylesheet includes the Dublin Core Metadata Element Set. It supports W3C DOM compatible browsers such as IE7, IE6, Netscape 7, and Mozilla Firefox. It is in the public domain and may be freely used, modified, and redistributed. It is provided "AS-IS" without warranty or technical support.
Instructions: On the top of the page, click on the title of the dataset to toggle opening and closing of all metadata content sections or click section links listed horizontally below the title to open individual sections. Click on a section name (e.g. Description) to open and close section content. Within a section, click on a item name (Status, Key Words, etc.) to open and close individual content items. By default, the Citation information within the Description section is always open for display.
Download: FGDC Plus Stylesheet is available from the ArcScripts downloads at www.esri.com.