Cottage Grove Lake water level history

Daily records since 1974 · Level today: 756.03 ft

Highest on record

792.43 ft

Jun 6, 1988

Lowest on record

728.60 ft

Nov 24, 1974

Today

756.03 ft

Oct 21, 2026

Years of data

since 1974

In short

Across 40 complete years, 2021 had the lowest average level (762.48 ft) and 1996 the highest (775.58 ft).

On average the lake is lowest in November (750.55 ft) and highest in June (787.67 ft).

Cottage Grove Lake level, all years

Loading chart…

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

Lowest years

Years ranked by their lowest daily level.

1975729.60 ft on Nov 17
1986740.04 ft on Dec 20
1984740.11 ft on Dec 6
2021743.49 ft on Oct 21
2018744.21 ft on Nov 21

Yearly highs and lows

Year	Average	Low	Low date	High	High date
2026 (293 days)	772.98	749.09	Feb 7	786.86	May 6
2025	768.67	748.73	Nov 16	787.76	Mar 17
2024	772.57	747.94	Nov 10	790.08	May 29
2023	770.28	749.48	Nov 3	787.51	May 24
2022	771.02	747.34	Nov 22	791.18	Jun 12
2021	762.48	743.49	Oct 21	778.96	Apr 14
2020	770.70	747.53	Dec 31	788.33	Jun 23
2019	770.04	745.41	Dec 6	786.68	Apr 9
2018	769.85	744.21	Nov 21	787.73	May 19
2017	773.01	748.20	Jan 16	790.22	May 19
2016	771.68	749.94	Nov 13	788.67	May 27
2015	766.61	750.21	Jan 9	783.16	May 1
2014	772.92	747.79	Nov 21	789.80	May 22
2013 (112 days)	759.11	750.10	Nov 17	779.21	Sep 11
2003 (259 days)	777.82	750.12	Jan 8	790.32	May 19
2002	772.04	749.45	Jan 10	787.77	May 29
2001	767.97	749.27	Dec 11	784.23	May 24
2000	773.02	746.83	Nov 26	790.22	May 27
1999	773.11	750.10	Jan 8	790.00	Jun 1
1998	773.10	749.83	Nov 3	790.57	May 29
1997	772.45	749.83	Jan 7	788.74	Jun 14
1996	775.58	749.20	Nov 11	790.34	Jun 8
1995	773.68	749.45	Nov 12	790.23	Jun 14
1994	771.73	749.79	Dec 21	788.11	Jun 20
1993	772.38	745.65	Nov 28	790.29	Jul 23
1992	771.42	749.67	Jan 9	788.41	May 21
1991	772.71	749.60	Dec 4	790.67	May 17
1990	772.19	748.94	Feb 3	790.13	Jun 24
1989	772.28	749.97	Jan 5	790.29	Jun 15
1988	772.74	749.35	Jan 2	792.43	Jun 6
1987	767.27	749.44	Dec 20	778.44	May 12
1986	771.25	740.04	Dec 20	790.15	May 22
1985	769.99	748.92	Jan 3	787.87	Jun 14
1984	772.69	740.11	Dec 6	790.27	Jun 21
1983	772.36	748.13	Nov 10	790.15	Jul 2
1982	770.54	749.00	Dec 24	785.47	May 23
1981	773.86	748.93	Nov 25	790.61	Jun 8
1980	773.20	749.90	Dec 20	790.41	Jun 15
1979	772.54	748.05	Jan 1	790.50	Jun 1
1978	771.89	748.54	Dec 31	790.46	May 25
1977	771.04	745.31	Feb 20	791.00	Jun 8
1976	771.67	746.80	Dec 7	788.91	Jun 17
1975	770.83	729.60	Nov 17	790.07	May 26
1974 (92 days)	744.33	728.60	Nov 24	758.40	Oct 1

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

Monthly averages

Month	Average	Lowest	Highest
January	753.15	745.95	780.04
February	760.42	745.31	785.97
March	772.14	752.62	787.76
April	781.36	768.44	787.30
May	787.04	776.11	790.67
June	787.67	771.86	792.43
July	786.35	765.46	790.57
August	783.84	757.09	789.77
September	777.80	750.19	788.60
October	762.08	743.40	777.12
November	750.55	728.60	782.17
December	752.22	739.00	783.09

Download

Daily levels as CSV (15,313 rows; credit the original agencies listed below)