Soap Lake water level history

Daily records since 1969 · Level today: 1,068.34 ft

Highest on record

1,077.00 ft

Apr 3, 1985

Lowest on record

1,068.34 ft

Oct 18, 2026

Today

1,068.34 ft

Oct 21, 2026

Years of data

since 1969

In short

Across 45 complete years, 2025 had the lowest average level (1,069.68 ft) and 1998 the highest (1,076.28 ft).

On average the lake is lowest in September (1,072.56 ft) and highest in April (1,073.85 ft).

Soap 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.

20251,068.57 ft on Oct 16
20241,069.03 ft on Oct 25
20231,070.06 ft on Oct 2
20221,070.40 ft on Oct 27
20091,070.58 ft on Oct 13

Yearly highs and lows

Year	Average	Low	Low date	High	High date
2026 (292 days)	1,069.32	1,068.34	Oct 18	1,069.99	Apr 22
2025	1,069.68	1,068.57	Oct 16	1,070.73	Apr 9
2024	1,070.33	1,069.03	Oct 25	1,071.33	Apr 6
2023	1,070.98	1,070.06	Oct 2	1,071.89	May 5
2022	1,071.42	1,070.40	Oct 27	1,072.20	Mar 28
2021	1,072.13	1,071.13	Oct 12	1,073.05	Mar 20
2020	1,072.97	1,072.09	Nov 8	1,073.68	Apr 9
2019	1,072.81	1,072.36	Jan 1	1,073.32	May 17
2018 (328 days)	1,072.65	1,071.87	Oct 14	1,073.43	Apr 16
2017	1,072.42	1,071.83	Jan 1	1,072.91	Apr 18
2016	1,071.84	1,071.20	Sep 21	1,072.40	Apr 9
2015	1,071.79	1,070.95	Oct 4	1,072.60	Apr 7
2014	1,072.37	1,071.59	Oct 12	1,073.14	Mar 29
2013	1,072.52	1,072.04	Sep 2	1,072.93	Apr 8
2012	1,072.43	1,071.68	Oct 21	1,073.09	Apr 26
2011	1,072.59	1,072.04	Sep 28	1,073.16	Mar 30
2010	1,072.00	1,071.45	Jan 1	1,072.39	Jun 23
2009	1,071.55	1,070.58	Oct 13	1,072.20	Apr 12
2008	1,071.84	1,071.13	Oct 14	1,072.62	Apr 8
2007	1,072.06	1,071.35	Sep 29	1,072.74	Mar 27
2006	1,072.16	1,071.42	Jan 4	1,072.86	Apr 12
2005 (287 days)	1,071.37	1,070.47	Sep 29	1,072.05	May 16
2004	1,071.81	1,071.00	Oct 16	1,072.45	Mar 27
2003 (315 days)	1,072.39	1,071.44	Oct 14	1,073.07	Apr 25
2002	1,072.54	1,071.48	Nov 1	1,073.27	Apr 12
2001	1,073.53	1,072.49	Oct 24	1,074.35	Mar 31
2000	1,074.51	1,073.56	Oct 22	1,075.38	Mar 18
1999	1,075.37	1,074.33	Oct 16	1,076.39	Feb 28
1998	1,076.28	1,075.73	Oct 20	1,076.75	Apr 5
1997	1,074.87	1,073.98	Jan 1	1,075.85	Dec 31
1996	1,073.62	1,072.92	Oct 20	1,074.19	Apr 8
1995	1,073.43	1,072.66	Nov 3	1,074.16	Apr 13
1994	1,073.49	1,072.56	Oct 22	1,074.29	Apr 20
1993	1,073.57	1,073.02	Nov 24	1,074.18	May 4
1992	1,073.27	1,072.42	Oct 15	1,073.96	Apr 17
1991	1,073.95	1,073.02	Oct 30	1,074.75	Mar 25
1990	1,073.71	1,073.42	Oct 11	1,074.00	May 30
1989 (318 days)	1,073.79	1,073.10	Oct 15	1,074.51	Apr 27
1988	1,074.24	1,073.40	Sep 28	1,074.88	Apr 18
1987	1,075.06	1,074.13	Oct 26	1,075.93	Mar 20
1986	1,075.67	1,074.82	Sep 13	1,076.44	Mar 17
1985	1,076.13	1,075.19	Sep 29	1,077.00	Apr 3
1984 (308 days)	1,076.06	1,075.41	Sep 10	1,076.44	Dec 30
1983	1,074.97	1,074.47	Jan 1	1,075.54	Dec 31
1982	1,074.29	1,073.67	Sep 15	1,074.79	Apr 2
1981	1,074.28	1,073.55	Sep 23	1,074.82	Mar 14
1980 (324 days)	1,073.89	1,073.42	Sep 3	1,074.36	Dec 31
1979	1,073.69	1,072.99	Oct 9	1,074.43	Mar 24
1978	1,074.13	1,073.70	Sep 19	1,074.67	Apr 17
1977	1,073.96	1,073.23	Sep 22	1,074.64	Mar 15
1976	1,074.55	1,073.77	Oct 18	1,075.24	Apr 14
1975	1,074.91	1,074.18	Sep 30	1,075.56	Mar 22
1974 (92 days)	1,074.57	1,074.18	Oct 5	1,074.97	Dec 27
1970 (272 days)	1,073.94	1,072.84	Sep 24	1,074.57	Mar 16
1969 (92 days)	1,073.46	1,073.21	Oct 16	1,076.28	Oct 1

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

Monthly averages

Month	Average	Lowest	Highest
January	1,073.28	1,069.21	1,076.66
February	1,073.57	1,069.48	1,076.84
March	1,073.77	1,069.72	1,076.99
April	1,073.85	1,069.94	1,077.00
May	1,073.73	1,069.79	1,076.85
June	1,073.50	1,069.38	1,076.65
July	1,073.16	1,068.91	1,076.41
August	1,072.77	1,068.52	1,076.34
September	1,072.56	1,068.38	1,076.01
October	1,072.62	1,068.34	1,076.28
November	1,072.82	1,068.62	1,076.26
December	1,073.00	1,068.91	1,076.44

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Daily levels as CSV (18,747 rows; credit the original agencies listed below)