Hydrowet — Hartwell Lake, live

hydrowet

updated Sep 14, 6:00 PM

Drought watchHartwell Lake 9.9 ft below full pool

Below full pool

9.9

ft (full = 660 ft)

Hartwell deficit

—

acre-feet below full

Above 2008 drought low

12.6

ft (637.49 ft, 2008 drought)

How past droughts played out →

Hartwell Lake · elevation at Hartwell Dam

640.31ft above sea level

-0.12 ftsince midnight

-0.41 ft7 days

-1.73 ft30 days

Hartwell is easing down — releases, evaporation, and intake are outpacing ≈216 cfs of gauged inflow (-0.4 ft this week). That puts it in the “Below guide curve” range, 1.1 ft above the “Drought drawdown” line.

Storage

—

acre-feet

To full pool (660 ft)

9.9 ft

below full

Percent full

—

of full-pool storage

Water temp

—

The lake in cross-section

Past 30d

-1.62 ft over this window

Daily mean elevation · official lake gauge · provisional

Below guide curve

What this level means →

Where the water is flowing

Full water budget →

SteadyReceding · high water draining downOn the rise · climbing right nowInbound wave · big rise upstreamFlooding · NWS, by river height— direction is judged from each gauge’s own last 48 hours, scaled to its river; dot speed follows the flow itself. NWS flood status is judged by river height and outranks direction

Live streamflow at the 2 USGS gauges. Labels show measured flow — line width is not to scale.

Tributary inflow · gauged rivers upstream

215.8cfs combined

83% of gauged inflow is coming from the Chattooga

Chattooga River near Clayton
179 cfs83%USGS · 5:00 PM EDT
Twelvemile Creek near Liberty
36.8 cfs17%USGS · 6:00 PM EDT

Gauged tributaries only — runoff below these gauges and ungauged arms are not included. Streamflow: USGS, provisional, stamped per reading. Flood status: NOAA/NWS, judged by river height at each gauge — not by the flow number.

drawing up the lake…