FEMA: Floods - U.S. Federal Emergency Management Agency resources on the topic, including floodplain mapping and mitigation programs, advice on preparedness, reports on past floods, and legal information. - http://www.fema.gov/hazard/flood/
American Red Cross - Flood and Flash Flood - Information on preparing for floods and how to cope afterwards. - http://www.redcross.org/services/disaster/0,1082,0_585_,00.html
Flooding Topics - Online info about local flooding including the King County Flood Warning System, flood buyouts and other programs, how to call in drainage complaints, and hydrologic data. - http://dnr.metrokc.gov/topics/flooding/FLDtopic.htm
NOVA Online, Flood - Takes a look at the history of floods, the midwestern flood of 1993, and the benefits of floods. - http://www.pbs.org/wgbh/nova/flood/
Coping With Floods - Extensive information on dealing with the before, during, and aftermath of floods, presented by North Dakota State University. - http://www.ag.ndsu.nodak.edu/flood/
Knapp Associates - Providing information for homeowners, insurance companies, lenders, and real estate agencies for handling the before and afters of a flood. - http://www.knapp-assoc.com/
Association of State Floodplain Managers (ASFPM) - ASFPM is an organization of professionals in the US interested in floods, floodplain management and related topics. Site contains news of national, state and local floodplain management legislation. - http://www.floods.org/
Floodplain Management - Information about flooding, floodplains, and flood protection. Also links to other web resources related to floods, flooding, and floodplain management. - http://www.floodplain.org/