1 x 2 Degree USGS Quadrangle Boundaries of 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?

This data set portrays an index to the U.S Geological Survey (USGS) 1 x 2 degree topographic quadrangle maps that cover Idaho.  The data set was created by selecting and projecting features that cover Idaho from a national layer downloaded at http://www.gisdatadepot.com.

1. How should this data set be cited?
   
   
   Idaho Geospatial Data Clearinghouse, 20051209, 1 x 2 Degree USGS Quadrangle Boundaries of Idaho: Idaho Geospatial Data Clearinghouse, Moscow, ID USA.
   
   
   Online links:

   • http://data.insideidaho.org/data/IGDC/archive/quadbnd250k_id_igdc.tgz

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

   West: -118.599592

   East: -109.402339

   North: 49.069327

   South: 40.930592
   
   
3. What does it look like?
   
   
   Thumbnail image:
   
   
   
4. Does the data set describe conditions during a particular time period?
   
   
   Calendar date: 20051209
   Currentness reference:

   publication date

   
   
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 (24)
      
      
   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 0.002048.

      Ordinates (y-coordinates) are specified to the nearest 0.002048.

      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?
   
   
   TileIndex250k_id_igdc

   1 x 2 degree USGS quadrangle (Source: Idaho Geospatial Data Clearinghouse)

   
   

   FID

   Internal feature number. (Source: ESRI)
                     

   
   

   Sequential unique whole numbers that are automatically generated.

   
   

   Shape

   Feature geometry. (Source: ESRI)
                     

   
   

   Coordinates defining the features.

   
   

   UID

   Unique ID (Source: Idaho Geospatial Data Clearinghouse)
                     

   
   

   Unique IDs defining the features.

   
   

   NAME

   The name of the quadrangle from the USGS DRG metadata. (Source: Idaho Geospatial Data Clearinghouse)
                     

   
   

   Names defining the features.

   
   

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   
   
   • Idaho Geospatial Data Clearinghouse
   
   
2. Who also contributed to the data set?
   
   
3. To whom should users address questions about the data?
   
   
   Bruce Godfrey

   Idaho Geospatial Data Clearinghouse

   GIS Specialist

   Box 442350

   Moscow, ID 83844-2350

   
   

   208.885.6463 (voice)

   bgodfrey@uidaho.edu

This data set was developed for the purpose displaying U.S Geological Survey (USGS) 1 x 2 degree topographic quadrangle map boundaries.  No responsibility is assumed by the Idaho Geospatial Data Clearinghouse in the use of these data.

1. Where did the data come from?
   
   
   GISDATADEPOT (source 1 of 1)

   
   

   GIS Data Depot, Unknown, USGS 250K Quad Grid.

   
   

   Online links:

   • http://data.geocomm.com/

   
   

   Type of source media: online

   Source contribution:

   USGS quadrangle boundaries for the United States.

   
   
2. What changes have been made?
   
   
   Date: 20051212 (change 1 of 1)

   Selected quadrangle boundaries for which the Idaho Geospatial Data Clearinghouse has Digial Raster Graphics (DRGs).
   
   Projected from Lambert Azimuthal Projection to UTM/NAD27 [ArcGIS 9.0].
   
   Projected from UTM/NAD27 to IDTM83 [ArcGIS 9.0].
   
   Joined quadrangle names from INSIDE Idaho database using the unique ID.  The quadrangle names originated from the USGS DRG metadata.

   
   

   Person responsible for change:
   

   Bruce Godfrey

   Idaho Geospatial Data Clearinghouse

   GIS Specialist

   Box 442350

   Moscow, ID 83844-2350

   
   

   208.885.6463 (voice)

   bgodfrey@uidaho.edu

   
   

   Data sources used in this process:

   • GISDATADEPOT

   
   

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?
   
   

   All quadrangles for which the Idaho Geospatial Data Clearinghouse has Digital Raster Graphics are included.

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

   No checks for logical consistency were performed.

   
   

None

Who distributes the data set?


Bruce Godfrey
Idaho Geospatial Data Clearinghouse
GIS Specialist
Box 442350
Moscow, ID 83844-2350


208.885.6463 (voice)
bgodfrey@uidaho.edu


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


Downloadable Data


What legal disclaimers am I supposed to read?


Although these data have been processed successfully on a computer system at the Idaho Geospatial Data Clearinghouse, no warranty, expressed or implied, is made regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.


How can I download or order the data?


• Availability in digital form:




Data format:	in format ESRI Shapefile (.shp) Size: 0.442
Network links:	http://insideidaho.org/data/IGDC/archive/quadbnd250k_id_igdc.tgz



• Cost to order the data: None



Is there some other way to get the data?


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

Box 442350