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Lake levels › South Carolina › Lake Hartwell

Lake Hartwell water level today

173.94 ft above sea level (October 20, 2026 at 3:00 AM). It is 485.73 ft below the Corps' guide curve target for today (659.67 ft). Lake Hartwell is falling slowly: down 0.34 ft in the past 7 days and down 0.45 ft over 30 days.

Level now173.94 ft
vs guide curve (659.7)−485.73 ft
Past 24 hours+0.02 ft
Past 7 days−0.34 ft
Past 30 days−0.45 ft
vs 1 year ago−6.91 ft

Lake Hartwell level over the last 12 months

133275416558699 Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26Oct 26
Daily elevation in feet, last 12 months; dashed orange line = Corps guide curve (target level).

12-month low: 172.11 ft (July 17, 2026). High: 180.96 ft (October 27, 2025). Swing: 8.85 ft.

Daily Lake Hartwell levels, last 30 days

DateElevation (ft)Change
Oct 20, 2026173.94+0.02 ft
Oct 19, 2026173.92−0.25 ft
Oct 18, 2026174.17±0.00 ft
Oct 17, 2026174.17+0.09 ft
Oct 16, 2026174.08−0.01 ft
Oct 15, 2026174.09−0.08 ft
Oct 14, 2026174.17−0.11 ft
Oct 13, 2026174.28−0.11 ft
Oct 12, 2026174.39−0.10 ft
Oct 11, 2026174.49+0.24 ft
Oct 10, 2026174.25+0.29 ft
Oct 9, 2026173.96−0.05 ft
Oct 8, 2026174.01+0.09 ft
Oct 7, 2026173.92−0.10 ft
Oct 6, 2026174.02−0.16 ft
Oct 5, 2026174.18−0.13 ft
Oct 4, 2026174.31+0.15 ft
Oct 3, 2026174.16−0.03 ft
Oct 2, 2026174.19+0.12 ft
Oct 1, 2026174.07+0.13 ft
Sep 30, 2026173.94−0.24 ft
Sep 29, 2026174.18−0.05 ft
Sep 28, 2026174.23−0.05 ft
Sep 27, 2026174.28±0.00 ft
Sep 26, 2026174.28±0.00 ft
Sep 25, 2026174.28+0.04 ft
Sep 24, 2026174.24+0.05 ft
Sep 23, 2026174.19−0.05 ft
Sep 22, 2026174.24−0.11 ft
Sep 21, 2026174.35−0.04 ft

Monthly average levels

MonthAverageLowHigh
Nov 2025179.88174.57180.77
Dec 2025177.48172.72179.59
Jan 2026177.55175.24178.85
Feb 2026177.40172.75179.93
Mar 2026178.40175.84178.79
Apr 2026178.16175.34179.00
May 2026177.84175.07178.80
Jun 2026178.61178.29179.00
Jul 2026177.02172.11178.07
Aug 2026176.69175.71177.30
Sep 2026174.83173.94175.71
Oct 2026 *174.14173.92174.49

* partial month or year.

Lake Hartwell year by year

YearLowHighAverage
2026 *172.11 Jul 17179.93 Feb 17177.17
2025172.72 Dec 30185.58 Apr 27182.48
2024173.67 Dec 2185.36 Mar 7182.04
2023 *173.45 Dec 22178.80 Oct 15176.55

Lake Hartwell on this date in past years

YearLevel on this dateToday vs then
2025180.85 ft−6.91 ft
2024183.94 ft−10.00 ft
2023178.15 ft−4.21 ft

Is Lake Hartwell full?

The Corps of Engineers manages Lake Hartwell to a seasonal guide curve rather than one fixed full level. Today's target is 659.67 ft and the lake is 485.73 ft below it.

Is Lake Hartwell rising or falling?

Lake Hartwell is falling slowly: down 0.34 ft in the past 7 days and down 0.45 ft over 30 days. In the latest day it moved +0.02 ft.

How does Lake Hartwell compare with last year?

Compared with the same date last year, the lake is 6.91 ft lower. Two years ago on this date it stood at 183.94 ft.

Data source

U.S. Army Corps of Engineers (USACE CWMS Data API), gauge Hartwell.Elev-Head.Inst.1Hour.0.Raw-SHEF_SAS; readings since Oct 15, 2023. Official source · how we collect it.

Other lakes in South Carolina

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