Terrestrial and Aquatic Land Use and Habitat Change as a Result of the Nine-Foot Channel Project, Upper Mississippi and Lower Illinois Rivers, Pools 24, 25, and 26, Quantitative Report

摘要

This report contains a quantitative acreage and spatial (map) analysis of the land use and terrestrial and aquatic habitat changes that have occurred as a result of the construction of the nine-foot navigation project in Pools 24, 25 and 26, Upper Mississippi and Lower Illinois Rivers. The study area extends from Locks and Dam No. 26 Alton, Illinois (mile 203) to the base of Lock and Dam No. 22 near Saverton, Missouri (mile 301) on the Mississippi River and the Illinois River portion of Pool 26 Dam Grafton, Illinois (mile 0) to the base of the lock and dam at LaGrange, Illinois (mile 80). The lateral boundaries of the study area vary, but usually stop at a major levee, road or railroad grade. In some cases, the availability of old air photography limited the lateral boundaries adjacent to the rivers.