2005–present

The lake gauge's daily record begins in March 2005. Hartwell Dam closed in 1962, so the 1964 record and earlier droughts are in the records below, not on the chart. Hartwell Lake has ranged over 27.91 vertical feet, from a record low of 637.49 ft (Dec 9, 2008) to a record high of 665.40 ft (Apr 8, 1964). Today's 649.20 ft is higher than 7% of the 259 monthly averages since 2005.

Lake elevation history, monthly, Mar 2005 to Sep 2026, today 649.20 ft, full pool 660.00 ft, lowest 637.61 ft in Dec 2008, highest 664.85 ft in Jan 2016. Yearly summary of the monthly record.
Year	Mean (ft)	Low (ft)	High (ft)
2005	660.17	656.89	662.65
2006	656.42	651.75	659.70
2007	654.32	646.68	658.86
2008	646.87	637.61	652.26
2009	654.25	641.37	662.12
2010	658.38	653.95	662.66
2011	655.80	650.00	661.18
2012	649.99	644.78	653.10
2013	658.24	646.22	664.65
2014	658.35	654.23	662.53
2015	658.07	654.69	663.26
2016	656.80	648.94	664.85
2017	651.92	648.88	654.06
2018	658.86	650.02	664.20
2019	658.88	654.92	662.69
2020	660.46	657.02	663.52
2021	659.85	656.43	662.43
2022	658.16	653.77	661.82
2023	657.47	651.94	661.94
2024	658.07	653.12	662.30
2025	657.85	653.19	660.48
2026	652.58	649.21	653.74

Monthly mean (line) with monthly min–max band. Dashed teal line = full pool (660.00 ft).

Record high

665.40 ft

Apr 8, 1964

Record low

637.49 ft

Dec 9, 2008

Flood pool

665.00 ft

last topped Jul 9, 2013

Full pool

660.00 ft

conservation pool

Daily values shown as monthly min, mean and max. Lake level and streamflow from USGS (Hartwell project data courtesy of USACE Savannah); reference and record elevations from USACE Savannah District publications. Historical daily values are agency-reviewed; recent values are provisional.