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Gillham Lake Water Level Today

Daily level, distance to full pool and history for Gillham Lake, on the Cossatot River in Arkansas.

Updated · Source: US Army Corps of EngineersUSACE Provisional

Water level Provisional

500.49ft

msl · 12:00 AM CST, Nov 9, 2026

  • 1.51 ftbelow full pool (502.0 ft)
  • 31,702acre-ft in storage
  • +0.01 ftin 24 h+0.48 ft in 7 days+0.16 ft in 30 days
500502504506500502504506500502504506
  • Full pool
  • 1 yr ago

Is Gillham Lake full?

No. Gillham Lake is 1.51 ft below full pool (502.0 ft). It is 1.99 ft lower than a year ago (502.48 ft on Nov 9, 2025).

Gillham Lake level history

Full pool 502.0 ft
View data table
DateLevel (ft)
Nov 9, 2026500.49
Nov 8, 2026500.49
Nov 7, 2026500.48
Nov 6, 2026500.46
Nov 5, 2026500.42
Nov 4, 2026500.32
Nov 3, 2026500.15
Nov 2, 2026500.02
Nov 1, 2026500.01
Oct 31, 2026500.00
Oct 30, 2026499.99
Oct 29, 2026500.00
Oct 28, 2026500.01
Oct 27, 2026500.02
Oct 26, 2026500.03
Oct 25, 2026500.05
Oct 24, 2026500.06
Oct 23, 2026500.08
Oct 22, 2026500.09
Oct 21, 2026500.11
Oct 20, 2026500.13
Oct 19, 2026500.15
Oct 18, 2026500.17
Oct 17, 2026500.20
Oct 16, 2026500.25
Oct 15, 2026500.27
Oct 14, 2026500.28
Oct 13, 2026500.29
Oct 12, 2026500.30
Oct 11, 2026500.31
Oct 10, 2026500.33
  • Gillham Lake level
  • Full pool 502.0 ft
  • Above full pool
Source: USACE · Daily averages since 1975

Gillham Lake on Nov 9 in past years

Gillham Lake water level on Nov 9 in past years
YearLevel (ft)vs todayvs full pool
2026today500.49—−1.51 ft
2025502.48+1.99+0.48 ft
2024511.71+11.22+9.71 ft
2023502.79+2.30+0.79 ft
2022504.79+4.30+2.79 ft
2021497.61−2.88−4.39 ft
2020502.50+2.01+0.50 ft
2019512.79+12.30+10.79 ft
2018509.54+9.05+7.54 ft
2017499.80−0.69−2.20 ft
2016501.90+1.41−0.10 ft

Today’s level is the lowest for this date since 2021.

Lake facts

Full pool (conservation pool)
502.0 ft msl
Top of flood pool
569.0 ft msl
Bottom of conservation pool
464.5 ft msl
Record high since 1976
563.41 ftMar 2, 2018
Record low since 1976
485.43 ftOct 16, 1983
Data since
Dec 12, 1975
Dam
Gillham Damcompleted 1975
River
Cossatot River
Operated by
US Army Corps of Engineers, Little Rock District
Dam location
Howard County
Gauge location
34.2110, −94.2283

Dam, river and owner from the National Inventory of Dams (USACE). Records start in 1976, after the first filling of the reservoir.

Weather on the lake

  1. Tonight40°FLowCalmPartly Cloudy
  2. Monday72°FHighLow 47°FCalmSunny
  3. Tuesday75°FHighLow 53°FWSW 0–5 mphPatchy Fog then Mostly Sunny
  4. Wednesday77°FHighLow 47°FWNW 0–10 mphMostly Sunny
  5. Thursday68°FHighLow 38°FNNW 5–15 mphSunny
  6. Friday63°FHighLow 34°FNNW 0–5 mphSunny
  7. Saturday64°FHighLow 39°FSE 0–5 mphSunny

Forecast: National Weather Service for the dam area (34.21, −94.23). Wind speeds are forecasts, not measurements.

Nearby lakes

Quick answers

What is the full pool level of Gillham Lake?
502.0 ft above mean sea level, the top of its conservation pool. Above it, water is held in the flood pool (up to 569.0 ft) and released through Gillham Dam when conditions downstream allow.
How much does Gillham Lake need to be full?
Gillham Lake needs 1.51 ft more water to reach full pool (502.0 ft), as of Nov 9, 2026.
Is Gillham Lake rising or falling?
It is rising: +0.48 ft in the last 7 days and +0.01 ft in 24 hours, to 500.49 ft on 12:00 AM CST, Nov 9, 2026 (US Army Corps of Engineers).
When was Gillham Lake last full?
It was last at or above full pool (502.0 ft) on Aug 25, 2026. On Nov 9, 2026 it was 1.51 ft below.
What was the highest level ever recorded?
Gillham Lake reached 563.41 ft on Mar 2, 2018. The lowest was 485.43 ft on Oct 16, 1983 (USACE data since 1976).
How much has Gillham Lake changed in the last year?
In the last 12 months it ranged from 499.99 ft (Oct 30, 2026) to 510.78 ft (Feb 17, 2026), a swing of 10.79 ft.
How often is this page updated?
This page is updated several times a day with the latest reading from US Army Corps of Engineers. The last reading is from 12:00 AM CST, Nov 9, 2026.

Where this data comes from

Hourly pool elevation from the US Army Corps of Engineers (water.usace.army.mil). Recent readings are provisional and may be revised. Weather from the National Weather Service. Dam details from the National Inventory of Dams.

Lake Levels Daily is an independent site, not affiliated with TWDB, LCRA, USACE, USGS, NOAA, TVA or any lake operator. Check official sources before making safety decisions.