Contra Costa County, CA (2004)

In 2004, HJW successfully completed color orthophotos for Contra Costa County. HJW was able to arrange a cost savings plan which enables HJW to own the data, while the county maintains license to use the data with their partners.

Half-foot pixel orthophotos were generated from 1:15,000 scale (1”= 1250’) photography that was scanned at a resolution of 10 microns (2540 dpi). Softcopy compilation utilized superimposition to perform DTM updates to support orthophoto production. The project was completed and delivered to the County one month ahead of schedule.

Additionally, in 2000, HJW provided aerial photography, mapping and orthophotography for the County. Contours were compiled at 10’ intervals, and street centerline data was also collected. Orthophotos were generated at two scales; 1”=200’ within the urban areas, and 1”=400’ in rural areas.