
The USGS Real-Time Flood Impact (RT-FI) API service helps communities protect lives and property by providing flood risk context to widely-available USGS streamgage height measurements.
Due to a lapse in government funding, this website is not currently being updated. For more information please visit: www.doi.gov/shutdown

The USGS Real-Time Flood Impact (RT-FI) API service helps communities protect lives and property by providing flood risk context to widely-available USGS streamgage height measurements.

Summary of NWISweb, WaterServices, and WaterWatch decommissions and modernization of APIs and UI for water data delivery in 2025

What to expect from modernized replacements to the WaterServices family of APIs.