American Heritage Rivers: US EPA program to help river communities restore their environment, revitalize their economy, renew their culture and preserve their history.
American Rivers: A national non-profit conservation organization dedicated to protecting and restoring America's rivers and to fostering a river stewardship ethic.
Mississippi River Basin Alliance: A citizens' coalition that unites environmental justice organizations and traditional conservation groups around issues impacting the Mississippi River and its tributaries.
River Forecasts: Forecasts for Mississippi, Missouri, Illinois, and Ohio Rivers from NOAA.
River Network: River conservation resources, news, consulting services, land acquisition, grant and contact information for this non-profit organization for the protection of rivers.
Southeast River Forecast Center: National Weather Service office that produces daily river and flood forecasts for rivers in the Southeastern U.S.
The Nationwide Rivers Inventory: A listing of more than 3000 free-flowing river segments in the United States that are believed to possess one or more "outstandly remarkable" natural or cultural values. From the National Park Service.
Upper Mississippi, Illinois and Missouri River Association: Mission is to promote improvement and maintenance of the flood control and navigation systems in the Upper Mississippi, Illinois and Missouri River Valleys.
USGS Real-Time Water Data: Links to sites throughout the United States, by state, providing water level information.