Valley Precipitation

Rain Gauge Data

TVA receives data from 317 rain gauges strategically located in watersheds across the Tennessee Valley. Most of these devices are owned and maintained by TVA.

TVA also receives data from 62 gauges on the Cumberland River system that are operated by the U.S. Army Corps of Engineers and 29 gauges in watersheds throughout the Valley that are operated by the U.S. Geological Survey.

TVA uses this information together with data from stream gauges and Doppler radar to make water management decisions — for example, whether to store the water coming into the river system during flood events or release it to make room for potential floodwaters yet to come. The National Weather Service, municipalities, and other government agencies also use data from TVA’s rain gauges.

To access the rain data, use the pull-down menus below. Select a gauge location and then choose the time period that interests you.

Select State(s)

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Select Gauges

Windows Users Hold CTRL and click to select multiple sites.   Mac Users Hold Command and click to select multiple sites.

Select Time Period of Data

Select Format

Please select... View in a Table Excel Spreadsheet Comma Separated File

 

 

 

View a map showing daily rainfall amounts in selected watersheds draining into TVA-managed reservoirs.

 

See a graph comparing normal and observed rainfall and runoff in the eastern Tennessee Valley for the year to date.