About.com Weather -- Floods and Flash Floods - Links and background information on the geological occurrence of floods including fact sheets, emergency information and preparedness, and recovery from flooding.
Alert Systems - Information on flood warning technologies, organizations, and vendors of warning systems.
Automated Flood Warning System - Up to the date rainfall counts and image maps showing current active flood warnings.
Bureau of Meteorology of Australia - Providing complete flood information and warnings for all of Australia and Tasmania.
Floodwarn - Provides real-time flood information and advice, alerts and warnings affecting flood-prone areas in the United Kingdom. Includes a flooding forum.
King County Flood Warning System - Maps, flood phases, real-time gage readings on the main rivers and creeks of the area, as well as information on what to do before, during and after a flood.
National Weather Service Hydrologic Information Center - Current hydrologic conditions, flood summaries, river forecasts, and related information for the U.S.
Overland Park Flood Warning System of Kansas - Real time and recent readings flood stages and flow rates on local rivers and streams, access to the current readings of the stations on the system, maps and images pulled from the instantaneous and trend data, and queries of past precipitation and water levels for locations throughout the city.
Pampanga River Basin Flood Forecasting & Warning Center - Provides real-time flood info and warnings affecting these flood-prone areas in the Philippines

Disaster Forecasts