» Great Lakes Aquatic Habitat Network and Fund
Provides information and financial support to those working to protect and restore shorelines, lakes, rivers, wetlands, and other aquatic habitats in the Great Lakes Basin. Includes news and grant information.
» Ground Water Atlas of the United States
Online USGS publication describes U.S. ground-water resources by region. Covers the 50 states, Puerto Rico, and the U.S. Virgin Islands.
» RiverWeb's American Bottom Landing Site
Explore information about the environment, history, and cultures of this important part of the Mississippi River valley.
» USGS -- Water Resources of the United States
Information about water resources from the U.S. Geological Survey. Topics include ground water, surface water, water use, water quality, acid rain, toxic substances hydrology.
