Irrigated/Non-irrigated Lands, 1986, Eastern Snake Plain Aquifer, Idaho (raster format)
Irrigated/Non-irrigated Lands, 1986, Eastern Snake Plain Aquifer, Idaho (raster format)
FGDC Metadata
Show Definitions
Information used to reference the data.
Title: Irrigated/Non-irrigated Lands, 1986, Eastern Snake Plain Aquifer, Idaho (raster format)
Originators: Geospatial Technology Section, Idaho Department of Water Resources
Series name: p3940r2930_1986_irrpatch_fill2.img
Data type: remote-sensing image
A characterization of the data, including its intended use and limitations.
Abstract:
This is a 30-meter raster dataset created from Landsat TM data in which a value of 0 denotes non-irrigated land and a value of 1 denotes irrigated land. NDVI images were processed for three dates for Path 40 Rows 29-30 (1986/05/28, 1986/06/13, 1986/07/31) as well as three dates for Path 39 Rows 29-30 (1986/06/22, 1986/08/09, 1986/10/12). The NDVI images were then processed in an unsupervised classification with 250 classes using ERDAS Imagine followed by a supervised classification in which the classes were grouped and labeled as irrigated or non-irrigated.
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.
Dataset credit:
Image classifications and image processing: Margie Wilkins, IDWR
Contact information for the individual or organization that is knowledgeable about the data.
Organization: Idaho Department of Water Resources
Person: Geospatial Technology
Position: GIS Analyst
Phone: (208) 287-4800
Fax: (208) 287-6700
Email: gisinfo@idwr.idaho.gov
Instructions:
https://research.idwr.idaho.gov
Address type: mailing and physical
Address:
322 East Front Street
City: Boise
State or Province: ID
Postal code: 83720
How the data are represented, formatted and maintained by the data producing organization.
Data type: remote-sensing image
Native dataset environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143
Time period(s) for which the data corresponds to the currentness reference.
Date: 19860528
Date: 19861012
Date: 19860622
Date: 19860809
Date: 19860613
Date: 19860731
Currentness reference:
ground condition
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: Land Use, Land Cover
Keyword thesaurus: None
Place:
Keywords: Idaho
Keyword thesaurus: None
Place:
Keywords: Eastern Snake Plain Aquifer, Idaho, Snake River Plain
Keyword thesaurus: None
Restrictions and legal prerequisites for accessing or using the data after access is granted.
Use constraints:
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.
+ Spatial Reference Information
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 |
-115.298496 (longitude) |
| East |
-111.340147 (longitude) |
| North |
44.491916 (latitude) |
| South |
42.066197 (latitude) |
+ Data Structure and Attribute Information
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 1986_IrrigatedLands_ESPA.img.vat
Detailed descriptions of entity type, attributes, and attribute values for the data.
Description:
Internal Feature Number
Attributes
OID
Definition:
Internal feature number.
Attribute values: Sequential unique whole numbers that are automatically generated.
Attribute definition source:
ESRI
Value
Attribute domain values
| Value |
Definition |
| 0 |
non-irrigated
|
| 1 |
irrigated
|
Attribute definition source:
IDWR assigned through land classification process
Red
Green
Blue
Opacity
Count
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: 212344
Type and number of raster spatial objects in the data.
Raster object type: Grid Cell
Cell information
Number of cells on x-axis: 10495
Number of cells on y-axis: 8874
+ Data Quality and Accuracy Information
Information about the fidelity of relationships, data quality and accuracy tests, omissions, selection criteria, generalization, and definitions used to derive the data.
Logical consistency report:
Land use classifications based on irrigation status are bound to have errors. No ground verification was made.
Accuracy of the identification of data entities, features and assignment of attribute values.
Attribute accuracy report:
Land use classifications based on irrigation status are bound to have errors. No ground verification was made.
+ Data Source and Process Information
Information about events, parameters, tolerances and techniques applied to construct or derive the data.
Process step information
Process Step 1
Process description:
Process Step 5. Perform supervised classification using ERDAS Imagine: input signature file: isodata unsupervised classification from previous step. attribute options: accept defaults non-parametric rule: none parametric rule: maximum likelihood
Process Step 2
Process description:
Process Step 2. Produce NDVI images for each Landsat scene.
Process Step 3
Process description:
Process Step 6. Grouping tool using ERDAS Imagine to label classes as irrigated or non-irrigated.
Process Step 4
Process description:
Process Step 4. Perform isodata unsupervised classification using ERDAS Imagine: number of classes: 250 color scheme options: approximate true color r=3, g=2, b=1 maximum iterations: 20 convergence threshold: 0.950 skip factors: X=1, Y=1
Process Step 5
Process description:
Process Step 7. Mosaic Path 40 Rows 29-30 and Path 39 Rows 29-30 using ERDAS Imagine.
Process Step 6
Process description:
Process Step 1. Each Landsat scene was clipped to the same extent using an ERDAS Imagine model.
Process Step 7
Process description:
Process Step 8. Create Metadata.
Process Step 8
Process description:
Process Step 3. Layerstack NDVI images from earliest date to latest date using ERDAS Imagine.
+ Data Distribution Information
Description of the data known by the party from whom the data may be obtained, liability of party distributing data, and technical capabilities required to use the data.
Distribution liability:
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.
Distribution Point of Contact
Contact information for the individual or organization distributing the data.
Organization: Idaho Department of Water Resources
Person: Geospatial Technology
Position: GIS Analyst
Phone: (208) 287-4800
Fax: (208) 287-6700
Email: gisinfo@idwr.idaho.gov
Hours of service: 8:00 to 5:00
Instructions:
https://research.idwr.idaho.gov
Address type: mailing
Address:
322 East Front Street
City: Boise
State or Province: ID
Postal code: 83720
Country: US
Common ways in which data may be obtained.
Digital form:
Format name: ERDAS Imagine format, dependent upon request
Digital transfer option:
Fees: To be determined at time of order