View image Biodiversity Degradation in Illinois Stoneflies Go to the article Figure. Twenty-five major river drainages in Illinois. Go to the article Fig. View image Habitat Changes in the Upper Mississippi River Floodplain Go to the article Fig. The Upper Mississippi River.
Numbers indicate reservoirs formed by navigation dams and known locally as pools.
View image Contaminant Trends in Great Lakes Fish Go to the article Fig. View image Surface Cover Changes in the Rio Grande Floodplain, 1935-89 Go to the article Figure . The Rio Grande study area. View image Duck Nest Success in the Prairie Potholes Go to the article Fig. Areas of the Prairie Pothole region and time periods for which estimates of duck nest success were made.