The majority of the imagery was acquired in support of IDWR's Northern Idaho Adjudication (NIA). The NIA covers those basins north of the Clearwater basin, including the Palouse River basin. These data cover most for northern Idaho from the Canadian boarder south to approximately Lewiston, ID. The imagery was primarily used to guide delineation of areas of water use claimed in the NIA. Additional imagery within the Clearwater basin was acquired by Potlatch Corp. to cover lands they own.

Project Information Provided by Contractor:

The following information was the only documentation recieved with these data.

Idaho Addon project, 2006 Surdex Corporation520 Spirit of St. Louis Blvd. Chesterfield, MO 63005Phone - (636) 532-3427

Photo positions provided by the USDA were modified to include the additional frames necessary to cover the area requested by various agencies in Idaho. The photo station data was loaded into various flight management systems and logged into a database noting the date flown and aircraft/camera used. This database was used for progress reporting and creation of data files.

Flight crews photographed all missions in ID, starting June 23 and ending September 12. All systems collected Airborne GPS data using dual frequency receivers and collecting data at a minimum of one second intervals. Post processing of all GPS data was preformed by Surdex with GraphNav software. HAS Images (Dayton, OH) processed all the color positive film. All the film was inspected and titled by Surdex and their team members. All the film was scanned using Leica Geosystems DSW700 models. Dodging and building image pyramids were handled using Surdex developed software.

For Aerial Triangulation (AT) purposes, this portion of Idaho was subdivided into 8 blocks. AT on all frames flown was preformed in their respective UTM zone using Z/I Imaging’s ISAT and Surdex Snoop tools.

All usable frames of photography were ortho-rectified at 1 meter resolution using the USGS National Elevation Dataset (NED) and Surdex developed orthorectification software. Using the common overlap between adjacent frames, all imagery was digitally mosaicked together and DOQQ were cut from a seamless virtual mosaic. A majority of each DOQQ will come from a single date of photography, which is identified in the photo center shapefile. Radiometric balancing was performed using Inpho Orthovista software.