Wallace Lake water level history

Daily records since 2015 · Level today: 140.06 ft

Highest on record

237.66 ft

Oct 19, 2026

Lowest on record

139.43 ft

Oct 1, 2026

Today

140.06 ft

Oct 21, 2026

Years of data

since 2015

In short

Across 10 complete years, 2017 had the lowest average level (141.78 ft) and 2023 the highest (144.45 ft).

On average the lake is lowest in August (141.52 ft) and highest in April (145.06 ft).

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

Years ranked by their lowest daily level.

Year	Average	Low	Low date	High	High date
2026 (294 days)	140.94	139.43	Oct 1	237.66	Oct 19
2025	142.18	139.57	Nov 14	150.56	May 4
2024	144.06	141.68	Oct 26	156.41	Apr 12
2023	144.45	140.48	Nov 30	152.76	Feb 4
2022	142.82	141.56	Jul 1	150.31	Mar 24
2021	143.73	141.51	Sep 29	150.40	May 13
2020	143.49	141.60	Aug 26	150.52	Feb 14
2019	143.96	141.41	Sep 18	152.94	Jan 5
2018	143.35	140.41	Sep 5	153.92	Nov 14
2017	141.78	140.38	Jan 11	145.86	Sep 2
2016	143.70	140.22	Nov 25	160.06	Mar 11
2015 (29 days)	147.34	146.26	Dec 13	148.89	Dec 30

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

Month	Average	Lowest	Highest
January	144.25	140.00	152.94
February	144.24	140.48	152.76
March	144.91	140.25	160.06
April	145.06	139.94	156.41
May	144.98	140.24	152.07
June	143.42	140.39	155.03
July	141.76	140.05	144.10
August	141.52	139.53	145.49
September	141.59	139.44	145.86
October	141.72	139.43	237.66
November	141.97	139.57	153.92
December	142.97	140.10	151.58

Daily levels as CSV (3,968 rows; credit the original agencies listed below)