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Official websites use .gov
A .gov website belongs to an official government organization in the
United States.
Secure .gov websites use HTTPS
A lock (
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Combined location graph Graph a single data type with up to the last 120 days of data for multiple monitoring locations
Important for you to know:
- Scheduled Maintenance NoticeUSGS will be performing maintenance on the time series data processing system beginning at 08:00 EST on April 2, 2026. During this period, delivery of the latest time series data will be delayed. The maintenance is expected to finish within 3 hours, after which all backlogged time series data will be processed and delivered to WDFN web portals and APIs.