USGS WaterAlert

The United States Geological Survey (USGS) WaterAlert service sends e-mail or text messages when certain parameters within surface water, groundwater, water quality, and precipitation categories, as measured by a USGS real-time data-collection station, exceed user-definable thresholds.

Real-time data from USGS gages are transmitted via satellite or other telemetry to USGS offices at various intervals; in most cases, once every hour. Emergency transmissions, such as during floods, may be more frequent. Notifications will be based on the data received at these site-dependent intervals.

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