Inflows for Clark Hill Dam - Lake Thurmond

These graphs are automated model output produced every three hours.  This location also includes an official inflow forecast for the local basin runoff only (not total inflow into project) updated at least once a day by hydrologists at the Southeast River Forecast Center. The official forecast may differ from the inflow guidance graphs shown here due to time of production and change in forecast rainfall as well as adjustments made by the hydrologist.  If you have any questions on the inflow guidance or the official text inflow forecast please call our office...770-486-0028 ext 1.

To see the official TEXT inflow forecast product...click here (may need to look at previous versions).

Updated:  May 28, 2026 @ 04:00:01Z

Past and Forecast 2-Day Basin Average Precipitation

Past and Projected Inflows (based on forecast precipitation over the next 2 days)

Past and Forecast Next 6 Hours Basin Average Precipitation

Past and Projected Inflows (based on forecast precipitation over the next 6 hours only)

Past and Forecast 7-Day Basin Average Precipitation

Past and Projected Inflows (based on forecast precipitation over the next 7 days)

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