Digital Orthophotography Image Service for 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 image service includes a mosaic of 6522 individual orthoimages georeferenced to the IDTM83 grid.

This data set contains imagery from the National Agricultural Imagery Program (NAIP). NAIP acquired digital ortho imagery of Idaho during the agricultural growing seasons of 2004. NAIP provides a 1 meter ground sample distance (GSD) ortho imagery rectified to a horizontal accuracy of within +/- 3 meters of reference digital ortho quarter quads (DOQQS) from the National Digital Ortho Program (NDOP). The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 360 meter buffer on all four sides. NAIP quarter quads are rectified to the UTM coordinate system NAD83. NAIP imagery can obtain as much as 10% cloud cover per tile.

Note:  not all of the NAIP tiles for Idaho contained the 360 meter buffer on all sides.  Some images along the Idaho border contained areas of No Data.  All areas of No Data have been removed in the mosaic.

1. How should this data set be cited?
   
   
   Idaho Geospatial Data Clearinghouse, USDA-FSA-APFO Aerial Photography Field Office , 20060301, Digital Orthophotography Image Service for Idaho: Idaho Geospatial Data Clearinghouse, Moscow, Idaho USA.
   
   
   Online links:

   • Server=http://maps.insideidaho.org; Service=NAIP2004; ServiceType=image

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

   West: -118.307111

   East: -109.901568

   North: 49.281261

   South: 41.683816
   
   
3. What does it look like?
   
   
   Thumbnail image:
   
   
   
4. Does the data set describe conditions during a particular time period?
   
   
   Calendar date: 2004
   Currentness reference:

   ground condition

   
   
5. What is the general form of this data set?
   
   
   Geospatial data presentation form: raster digital data
   
   
6. How does the data set represent geographic features?
   
   
   1. How are geographic features stored in the data set?
      
      
      This is a Raster data set.
      
      
   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.

      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?
   
   
   Entity and attribute overview:

   USDA 1-meter natural color orthophotography for Idaho are depicted in raster format. 3.75' x 3.75' USGS quadrangle boundaries are depticted as polygons with quadrangle name, quadrant and image date as attributes.
   

   
   

   Entity and attribute detail citation:

   None

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   
   
   • Idaho Geospatial Data Clearinghouse
   • USDA-FSA-APFO Aerial Photography Field Office
   
   
2. Who also contributed to the data set?
   
   
3. To whom should users address questions about the data?
   
   

This purpose of this image service is to provide a seamless raster image for Idaho of the 2004 USDA orthoimagery for viewing in a Web browser. Digital orthoimages serve a variety of purposes, from interim maps to field references for earth science investigations and analysis. The imagery is useful as a layer of a geographic information system and as a tool for revision of digital line graphs and topographic maps.

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

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 observations, including topology?
   
   

None

Who distributes the data set?


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


What legal disclaimers am I supposed to read?


How can I download or order the data?


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