Yellowstone River Corridor Clearinghouse

Aerial Imagery

Part of a high-resolution orthophoto showing a stream, trees, building, and a parking lotThe aerial photos listed on this page are downloadable files in MrSID format, intended for use with Geographic Information System software.  The images may also be viewed with the free MrSID viewer available from Lizard Tech.

High-Resolution Orthophotography

Orthophotos of Montana from the National Agricultural Imagery Program

Historic Aerial Photography 

Includes aerial photographs and aerial photo mosaics from which other baseline datasets, such as banklines and flowlines are extracted.  The historic bankline and flowline datasets are then used to develop indicators of change within the Yellowstone River stream corridor.  They are a foundational element of the Yellowstone River Cumulative Effects Assessment because they allow detection of change within the stream corridor over the last 55+ years.