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Grand Bayou Reservoir water level history

Daily records since 2023 · Level today: 133.57 ft

Highest on record
139.87 ft
Jun 5, 2024
Lowest on record
133.63 ft
Oct 21, 2026
Today
133.57 ft
Oct 23, 2026
Years of data
3
since 2023

In short

Across 2 complete years, 2025 had the lowest average level (138.28 ft) and 2024 the highest (138.42 ft).

On average the lake is lowest in October (136.81 ft) and highest in February (138.70 ft).

Grand Bayou Reservoir level, all years

Loading chart…

Measured Normal range for the date (middle 50% of past years)

Each year's lowest and highest level

13313513713814020232024202520262023: lowest 136.81 ft (2023-11-18), highest 137.22 ft (2023-12-26), average 136.99 ft, 69 days measured2024: lowest 137.17 ft (2024-01-04), highest 139.87 ft (2024-06-05), average 138.42 ft, 353 days measured2025: lowest 137.43 ft (2025-11-22), highest 139.32 ft (2025-02-15), average 138.28 ft, 364 days measured2026: lowest 133.63 ft (2026-10-21), highest 139.47 ft (2026-06-22), average 137.77 ft, 294 days measured
13313513713814020232024202520262023: lowest 136.81 ft (2023-11-18), highest 137.22 ft (2023-12-26), average 136.99 ft, 69 days measured2024: lowest 137.17 ft (2024-01-04), highest 139.87 ft (2024-06-05), average 138.42 ft, 353 days measured2025: lowest 137.43 ft (2025-11-22), highest 139.32 ft (2025-02-15), average 138.28 ft, 364 days measured2026: lowest 133.63 ft (2026-10-21), highest 139.47 ft (2026-06-22), average 137.77 ft, 294 days measured
Lowest to highest that yearYear average2026 so far

One bar per year from the lowest to the highest daily level, with the year's average. Years with no bar have no daily record in the agency archive.

Lowest years

Years ranked by their lowest daily level.

  • 2024137.17 ft on Jan 4
  • 2025137.43 ft on Nov 22

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (294 days)137.77133.63Oct 21139.47Jun 22
2025138.28137.43Nov 22139.32Feb 15
2024138.42137.17Jan 4139.87Jun 5
2023 (69 days)136.99136.81Nov 18137.22Dec 26

Levels in feet. Partial years show the number of days with data.

Monthly averages

MonthAverageLowestHighest
January138.20137.17139.40
February138.70138.43139.32
March138.62138.34139.19
April138.58138.11139.85
May138.67138.20139.52
June138.65138.27139.87
July138.39138.08138.75
August138.09137.67138.51
September137.48134.03138.46
October136.81133.63138.25
November137.45136.81138.03
December137.64136.99138.93

Download

Daily levels as CSV (1,080 rows; credit the original agencies listed below)