Develop Orthophotos and Mosaics from systemic color infrared aerial photography of the Upper Mississippi River System from 1975, 1989, 1994, and 2000

Science Center Objects

The U.S. Army Corps of Engineers’ Upper Mississippi River Restoration (UMRR) Program Long Term Resource Monitoring (LTRM) element is implemented by the U.S. Geological Survey, Upper Midwest Environmental Sciences Center (UMESC), in cooperation with the five Upper Mississippi River System (UMRS) states of Illinois, Iowa, Minnesota, Missouri, and Wisconsin. Color infrared aerial photography was systemically collected along the UMRS for the purposes of deriving land cover/land use (LCU) datasets. Aerial photography of the UMRS was collected in 1975 (acquired from the Great River Environmental Action Team), 1989 (supplemented by imagery acquired in 1991 for areas of high water in 1989), 1994, and 2000. Hardcopy prints of these aerial photographs exist in the UMESC photo archives and have been scanned into high resolution digital formats for the long-term preservation and usability of these historical datasets.

 

Color infrared aerial photo scan, UMRS Pool 8, 2000

Example of scanned historical aerial image (Pool 8 of the UMRS color infrared image, flightline 18, frame 005, year 2000)

(Public domain.)

To make these datasets accessible to researchers and the public in a useable digital format, the scanned images are being orthorectified to generate pool-wide mosaics for each year of acquisition and navigational pool/reach of the UMRS. Creating mosaics with the orthorectified scanned images would allow researchers to examine changes over time throughout the UMRS, including examining historic conditions of both current and future Habitat Restoration and Enhancement Projects (HREPs). These data could also provide resource managers and decision makers with information that can help to better understand long-term cycles and complex relationships among ecological components, or to identify areas within the UMRS that could benefit from restoration of major floodplain land cover and habitat types.

 

Color infrared aerial photo mosaic, UMRS Pool 8, 2000

Subset of orthorectified aerial photo mosaic (Pool 8 of the UMRS color infrared image, year 2000)

(Public domain.)

All data products (individual orthophotos and orthorectified pool-wide mosaics) will be made available online for users to download following completion of the USGS Fundamental Science Practices review process.