USGS Newsroom

Real-time stream flow and rainfall data for selected sites on Guam is now available online from the U.S. Geological Survey (USGS) Pacific Islands Water Science Center Web site. This information is useful for emergency responders and local government to forecast potential flooding events and minimize the risk to human safety and property. The USGS, with assistance from the National Weather Service (NWS), recently enhanced the Windward Hills rain gage and the Pago River stream flow gage with telemetry capabilities to report real-time information. These data are updated hourly and accessible to the public on the Internet.

The USGS operates a total of 6 rain gages and 8 stream flow gages on Guam. Support to operate these gages is also provided by the University of Guam Water and Environmental Research Institute of the Western Pacific and the United States Navy. Real-time capabilities will be added to other rainfall and stream flow gages as opportunities permit.

To find the real-time stream flow and rainfall data, visit Pacific Islands Water Science Center Web site and go to the “Water Conditions-Quick Links” section where you’ll find the sub heading for “Real-Time Data (from NWISWeb)”.