Notice
A system maintenance window is scheduled for September 10th, from 8:00 AM to 2:00 PM ET. Real-Time Data may experience temporary interruptions. We will monitor the system closely and restore the data flow as quickly as possible.
Thank you for your patience and understanding. If you have any questions, please reach out via the Contact Us page.
Historical Data will remain fully accessible and unaffected.
Real-Time Hydrometric Data Text Search
Search for a station by entering all or part of a station name or station number. Multiple station numbers (up to 20) can also be entered as comma-separated values in the form of "99AA999,99AAA99,etc".
NHS Water Watch
View the streamflow (discharge) current conditions by comparing the real-time discharge with the historical daily discharge.
News and Events
- HYDAT Release (2026-07-17)
- Unit Data (2011 - 2026, updated on 2026-05-11)
- Updated drainage areas for WSC hydrometric basins
- Wateroffice Release 58 (2026-02-26)
- Upcoming Enhancements to Network Change Communications
- Datamart URL change (2025-10-07)
- Auto-QAQC Pilot Launch (2025-06-02)
- Height Modernization Status
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