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Level of the Lake

Allatoona Lake

Elevation at Allatoona Dam

831.12ft

feet above sea level

8.88 ft below full · down 0.97 ft this week

Drawdown range
updated 6:15 PM EST

Past 24 hours

−0.12 ft

level change

Since midnight

−0.12 ft

level change

Past 30 days

−4.20 ft

level change

Storage

273,000

acre-feet · 74% full

Water temp

63.9°F

below Allatoona Dam

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Allatoona is easing down (−0.97 ft this week). Releases, evaporation and intakes are taking out more than is coming in. That puts it in the “Drawdown range” range, 8.12 ft above the “Deep drawdown” line.

Past 30 days

−4.19 ft over this window
830.00835.00Oct 14Oct 29Nov 13
Lake elevation, past 30 days, now 831.30 ft, down 4.19 ft over the window
DateElevation (ft)
Oct 14835.49
Oct 15835.32
Oct 16835.15
Oct 17835.00
Oct 18834.98
Oct 19834.86
Oct 20834.76
Oct 21834.59
Oct 22834.42
Oct 23834.22
Oct 24834.13
Oct 25834.09
Oct 26833.98
Oct 27833.83
Oct 28833.64
Oct 29833.44
Oct 30833.32
Oct 31833.17
Nov 1833.05
Nov 2832.91
Nov 3832.68
Nov 4832.43
Nov 5832.33
Nov 6832.22
Nov 7832.08
Nov 8832.05
Nov 9831.97
Nov 10831.87
Nov 11831.64
Nov 12831.48
Nov 13831.30

Daily mean elevation · USGS 02393500 daily means · provisional

Typical for these dates: the middle half of years since 1989 in the lake’s record, median dashed.

The lake in cross-section

Historic high 861.21964Flood pool ~860Summer pool 8401954 record low 809.38.88 ft to full831.12 ft

Rivers into the lake

Rivers & rain →

Swipe sideways to follow the river to the lake →

246 cfs7.7 cfs36 cfs254 cfs36 cfs373 cfsout the dam nowEtowah246 cfsShoal Creek7.7 cfsLittle River36 cfsEtowah armEtowah + Shoal CreekLittle River armLittle River74% fullAllatoona storagein 290 · out 373 cfsnet −83 cfs ≈ -0.20 in/day on the lakeEtowah at Allatoona…USGS gauge below the dam
SteadyReceding · high water draining downOn the rise · climbing right nowInbound wave · big rise upstreamFlooding · NWS, by river heightNo current readingRising or falling is judged from each gauge’s last 48 hours, scaled to its river. Dot speed follows the flow. NWS flood status comes from river height and outranks direction.

Streamflow at the 3 USGS gauges, plus the current flow out through the dam (USGS). Labels are gauge readings in cfs. Line width isn’t to scale. The lake’s net is worked out from these gauges (flow in minus flow out), so it misses ungauged creeks, evaporation and withdrawals.

The rivers, gauge by gauge

290cfs combined

85% of the inflow is coming from the Etowah

Gauged rivers only. Runoff below these gauges and ungauged arms aren’t counted. Streamflow: USGS (provisional). Flood status: NOAA/NWS, from river height at each gauge rather than flow.