Mississippi River
http://biology.usgs.gov/s+t/SNT/noframe/ms137.htm

James G. Wiener, Calvin Fremling, Carl E. Korschgen, Kevin P. Kenow, Eileen Kirsch, Sara J. Rogers, Yao Yin, Jennifer S. Sauer, USGS Biology Division


This site describes the Mississippi River, its drainage system, and the Delta. The article describes the geologic history, geography, human development, as well as the degradation of the delta and coastal wetlands, plants, animals and the ecosystemís status and health.

This resource is referenced here:
Subject: Biology, Geoscience:Hydrology:Surface Water, Environmental Science:Water Quality and Quantity:Surface Water
Resource Type: Scientific Resources:Overview/Reference Work
Topics: Hydrosphere/Cryosphere:Surface Water, Biosphere:Ecology