Onondaga Lake water level history

Daily records since 1970 · Level today: 363.08 ft

Highest on record

369.77 ft

Apr 27, 1993

Lowest on record

361.59 ft

Mar 12, 1978

Today

363.08 ft

Oct 21, 2026

Years of data

since 1970

In short

Across 45 complete years, 1988 had the lowest average level (363.00 ft) and 1972 the highest (364.10 ft).

On average the lake is lowest in September (363.08 ft) and highest in April (364.25 ft).

Onondaga Lake level, all years

Loading chart…

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

Lowest years

Years ranked by their lowest daily level.

1978361.59 ft on Mar 12
2025361.88 ft on Jan 21
1981361.88 ft on Mar 29
1986362.03 ft on May 5
1980362.03 ft on Feb 21

Yearly highs and lows

Year	Average	Low	Low date	High	High date
2026 (293 days)	363.78	362.27	Feb 17	366.22	Apr 6
2025	363.55	361.88	Jan 21	365.98	May 10
2024	363.53	362.63	Jun 9	365.00	Jan 27
2023	363.68	362.82	Sep 28	365.22	Apr 7
2022	363.65	362.72	Oct 22	365.33	Mar 20
2021	363.89	363.10	Apr 5	366.77	Oct 31
2020	363.67	363.04	Sep 18	365.33	May 3
2019	363.77	362.39	Mar 7	365.33	May 14
2018	363.76	362.83	Jan 5	365.86	Jan 13
2017	363.92	362.62	Dec 29	366.93	Apr 9
2016	363.49	362.53	Jan 31	365.60	Feb 26
2015	363.65	362.88	Aug 17	365.86	Jul 2
2014	363.66	362.39	Mar 8	365.77	Apr 9
2013	363.46	362.40	Feb 21	364.80	Dec 23
2012	363.22	362.68	Apr 8	364.77	Jan 28
2011	363.83	362.63	Sep 1	367.23	Apr 29
2010	363.45	362.86	Sep 6	364.84	Dec 4
2009	363.41	362.26	Feb 2	364.99	Feb 13
2008	363.52	362.90	Sep 25	365.48	Dec 29
2007	363.62	362.55	Feb 15	366.36	Mar 28
2006	363.68	362.74	Apr 14	365.25	Jul 13
2005	363.65	362.69	Sep 7	367.17	Apr 7
2004	363.57	362.47	Feb 3	364.94	Mar 6
2003	363.57	362.60	Feb 15	365.96	Apr 7
2002	363.37	362.75	Jan 23	364.79	May 16
2001	363.29	362.89	Oct 10	365.75	Apr 13
2000	363.49	362.77	Jul 28	365.36	Feb 28
1999	363.27	362.63	Jul 30	364.61	Jan 25
1998	363.58	362.84	Aug 8	367.23	Jan 12
1997 (325 days)	363.33	362.59	Jul 26	364.46	Mar 7
1996 (93 days)	364.16	362.79	Oct 18	366.37	Nov 13
1994 (272 days)	363.77	362.51	Aug 12	367.52	Apr 18
1993	363.92	362.55	Jul 24	369.77	Apr 27
1992	363.76	362.62	Jun 18	365.78	Mar 29
1991 (93 days)	363.06	362.47	Nov 4	363.99	Dec 14
1990 (272 days)	363.53	362.45	Aug 28	365.82	May 22
1989	363.20	362.15	Dec 18	366.10	May 16
1988	363.00	362.39	May 2	363.94	May 22
1987	363.08	362.06	Feb 28	364.40	Apr 10
1986	363.35	362.03	May 5	365.66	Mar 20
1985 (93 days)	363.15	362.59	Sep 30	363.99	Dec 3
1984 (273 days)	363.45	362.38	Jan 18	365.77	Apr 9
1983	363.21	362.39	Jun 27	367.13	Apr 30
1982	363.05	362.19	May 18	365.39	Mar 22
1981	363.19	361.88	Mar 29	366.28	Nov 1
1980	363.04	362.03	Feb 21	365.85	Mar 23
1979	363.44	362.27	Feb 20	368.47	Mar 9
1978	363.44	361.59	Mar 12	368.16	Mar 29
1977	363.80	362.22	Jan 17	366.92	Dec 18
1976	363.81	362.23	Sep 29	367.82	Mar 7
1975	363.31	362.39	Jul 15	366.92	Sep 29
1974 (93 days)	363.12	362.52	Oct 23	364.58	Dec 10
1973 (272 days)	363.44	362.31	Jul 10	366.83	Apr 8
1972	364.10	362.30	Sep 10	369.14	Jun 30
1971	363.46	362.25	Dec 6	367.41	Mar 20
1970 (92 days)	363.48	362.74	Oct 1	364.54	Nov 16

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

Monthly averages

Month	Average	Lowest	Highest
January	363.53	361.88	367.23
February	363.49	361.92	367.33
March	363.97	361.59	368.47
April	364.25	362.42	369.77
May	363.70	362.03	368.92
June	363.35	362.27	369.14
July	363.23	362.31	369.14
August	363.10	362.32	365.96
September	363.08	362.23	366.92
October	363.28	362.30	366.77
November	363.53	362.44	366.61
December	363.71	362.15	366.92

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Daily levels as CSV (18,569 rows; credit the original agencies listed below)