Pre- and Post-Maintenance Aerial Imagery for Illinois River's Alton through Brandon Lock and Dams, 2019-2021

Science Center Objects

Most of the locks and dams on the Illinois River are scheduled for closure for repair during the summer of 2020. This project will use 4-band (natural color and color infrared) aerial imagery to document baseline aquatic vegetation and river conditions prior to the closures in the late summer of 2019, and once again in the later summer of 2021 after the locks are reopened.

The aerial imagery will be analyzed for any changes in aquatic vegetation within the main channel and in adjacent backwaters that may have resulted from a year of decreased boat and barge traffic. Pool-based aerial mosaics will be produced for each set of imagery.

Aerial image of towboat and barges on the Illinois River near Beardstown, Illinois

Aerial image of towboat and barges on the Illinois River near Beardstown, Illinois. Collected on September 17, 2019

(Credit: Brian Lubinski (USFWS), Benjamin Finley (USGS), and Larry Robinson (USGS). Public domain.)