Land Use & Land Cover, 1980, Snake River Plain, Idaho

Frequently-asked questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. Where did the data come from?
  2. What changes have been made?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
  6. Is there some other way to get the data?
  7. What hardware or software do I need in order to use the data set?
• Who wrote the metadata?

Land use data of the Snake River Plain developed using image processing
     of 1980 Landsat MSS data.  Developed as part of the Regional Aquifer
     Systems Analysis (RASA).  The emphasis was to map irrigated land use.
     See the following report for details of the project.
     Hal Anderson, 3/18/83, "1980 Inventory of Irrigated Cropland of the
     Snake River Plain".

See the procedures below for an explanation of the geocorrection and
     mosaicking.
     --------------------------------------------------------------------
     Land cover codes and categories. (codes are values in .vat)
     Urban
     1 commercial-industrial
     2 residential
     3 other urban
     Irrigated Agriculture
     4 row crops
     5 small grains
     6 alfalfa-hay
     7 pasture
     8 other irrigated agriculture
     Dry Farm
     9 small grains
     10 other dry farm
     Range
     11 grasslands
     12 sage
     13 upland shrubs
     14 mixed shrub-sage-grass
     Forest Land
     15 deciduous
     16 coniferous
     17 mixed forest
     18 meadow
     Water
     19 water
     20 water shore
     Wetland
     21 forested wetland
     22 nonforested wetland
     Barren Land
     23 bare soil
     24 bare rock
     25 basalt
     26 burns
     Other
     27 shadow
     28 background
     -----------------------------------------------------------------
Procedures_Used:
      See report cited in abstract.
 
      9/10/97:  Explanation of the geocorrection and mosaicking.
      The original geocorrected classification files were visually overlayed
      on Landsat TM data to check for spatial accuracy.  Areas of scenes did
      not register well so we decided to redo the geocorrection using programs
      in ARC/INFO.
 
      The five original classification files were geocorrected using control
      points selected from Landsat TM data.  The control points were selected
      in ArcView and the classifications were geocorrected using GRIDWARP in
      ARC/INFO.  The output projection was IDTM (Idaho Transverse Mercator).
      The ouput pixel size was 57 meters.  The five files were mosaicked using
      MERGE. The final ouput file is rasa80lc. (The original name was rasa_all).

1. How should this data set be cited?
   
   
   Idaho Department of Water Resources, Unknowwn, Land Use & Land Cover, 1980, Snake River Plain, Idaho: Idaho Department of Water Resources, Boise, ID.
   
   
   Online links:

   • http://www.idwr.idaho.gov/gisdata/gis_data.htm

   
   
2. What geographic area does the data set cover?
   
   
   Bounding coordinates:

   West: -118.327938

   East: -111.047498

   North: 44.794212

   South: 42.065310
   
   
3. What does it look like?
   
   
   Thumbnail image:
   
   
   
4. Does the data set describe conditions during a particular time period?
   
   
   Calendar date: 198080
   Currentness reference:

   ground condition

   
   
5. What is the general form of this data set?
   
   
   Geospatial data presentation form: vector digital data
   
   
6. How does the data set represent geographic features?
   
   
   1. How are geographic features stored in the data set?
      
      
      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (1466416)
      
      
   2. What coordinate system is used to represent geographic features?
      
      
      The map projection used is Transverse Mercator.

      
      

      Projection parameters:

      Transverse Mercator

      Scale factor at central meridian: 0.999600

      Longitude of central meridian: -114.000000

      Latitude of projection origin: 42.000000

      False easting: 2500000.000000

      False northing: 1200000.000000

      
      

      Planar coordinates are encoded using coordinate pair.

      Abscissae (x-coordinates) are specified to the nearest 0.000000.

      Ordinates (y-coordinates) are specified to the nearest 0.000000.

      Planar coordinates are specified in meters.

      
      

      The horizontal datum used is North American Datum of 1983.

      The ellipsoid used is Geodetic Reference System 80.

      The semi-major axis of the ellipsoid used is 6378137.000000.

      The flattening of the ellipsoid used is 1/298.257222.

      
      
7. How does the data set describe geographic features?
   
   
   rasa80lc

   FID

   Internal feature number. (Source: ESRI)
                     

   
   

   Sequential unique whole numbers that are automatically generated.

   
   

   Shape

   Feature geometry. (Source: ESRI)
                     

   
   

   Coordinates defining the features.

   
   

   AREA

   PERIMETER

   RASA80LC2_

   RASA80LC21

   GRID_CODE

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   
   
   • Idaho Department of Water Resources
   
   
2. Who also contributed to the data set?
   
   

   Idaho Department of Water Resources

   
   
3. To whom should users address questions about the data?
   
   
   Geospatial Technology

   Idaho Department of Water Resources

   GIS Analyst

   322 East Front Street

   Boise, Idaho 83720

   USA

   
   

   (208) 287-4800 (voice)

   (208) 287-6700 (FAX)

   gisinfo@idwr.idaho.gov

   Hours of Service: 8:00 to 5:00

Land use and land cover data for RASA.

1. Where did the data come from?
   
   
2. What changes have been made?
   
   
   Metadata imported.

   
   

   Data sources used in this process:

   • D:\metadata_old\meta_template.xml

   
   
   Metadata imported.

   
   

   Data sources used in this process:

   • D:\metadata_old\meta_template.xml

   
   

1. How well have the observations been checked?
   
   
2. How accurate are the geographic locations?
   
   
3. How accurate are the heights or depths?
   
   
4. Where are the gaps in the data? What is missing?
   
   

   Data set has been visually inspected.  All data produced strives to meet National Mapping Accuracy Standards (NMAS).

   
   
5. How consistent are the relationships among the observations, including topology?
   
   

   ESRI feature type: Simple, Geometry: Polygon, Topology:

   
   

The spatial information is provided "as is". IDWR cannot accept any responsibility for errors, omissions, or positional accuracy in the digital data or underlying records. There are no warranties, expressed or implied, including fitness for a particular purpose, accompanying any of these products. However, notification of any errors would be appreciated.

Who distributes the data set?


Geospatial Technology
Idaho Department of Water Resources
GIS Analyst
322 East Front Street
Boise, Idaho 83720
USA


(208) 287-4800 (voice)
(208) 287-6700 (FAX)
gisinfo@idwr.idaho.gov
Hours of Service: 8:00 to 5:00


What's the catalog number I need to order this data set?


Downloadable Data


What legal disclaimers am I supposed to read?


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.


How can I download or order the data?


• Availability in digital form:




Data format:	in format ESRI data format, dependent upon request Size: 425.371
Network links:	http://www.idwr.idaho.gov/gisdata



• Cost to order the data: To be determined at time of order



Is there some other way to get the data?


What hardware or software do I need in order to use the data set?

322 East Front Street