Flathead Lake @ Selis Ksanka Qlispe Dam water level history

Daily records since 1990 · Level today: 2,891.82 ft

Highest on record

2,893.59 ft

Jun 25, 2022

Lowest on record

2,883.05 ft

Apr 3, 1992

Today

2,891.82 ft

Oct 21, 2026

Years of data

since 1990

In short

Across 36 complete years, 1998 had the lowest average level (2,888.28 ft) and 2005 the highest (2,890.57 ft).

On average the lake is lowest in March (2,884.82 ft) and highest in July (2,892.75 ft).

Flathead Lake @ Selis Ksanka Qlispe Dam 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.

19922,883.05 ft on Apr 3
19982,883.08 ft on Mar 17
20082,883.11 ft on Apr 10
19942,883.29 ft on Apr 3
20092,883.30 ft on Apr 9

Yearly highs and lows

Year	Average	Low	Low date	High	High date
2026 (291 days)	2,891.46	2,886.36	Mar 20	2,893.14	Jul 2
2025	2,889.68	2,885.20	Feb 21	2,892.92	Jul 28
2024	2,889.93	2,884.80	Apr 4	2,893.29	Jul 2
2023	2,888.93	2,884.53	Mar 4	2,892.71	Jun 14
2022	2,889.27	2,884.17	Feb 28	2,893.59	Jun 25
2021	2,889.58	2,884.00	Mar 29	2,893.19	Jul 2
2020	2,889.14	2,883.58	Apr 14	2,893.04	Jul 11
2019	2,889.46	2,884.20	Mar 11	2,893.20	Jul 3
2018	2,889.70	2,884.92	Mar 9	2,893.11	Jun 22
2017	2,889.71	2,884.29	Mar 12	2,893.03	Jun 29
2016	2,890.03	2,884.13	Apr 3	2,893.01	Aug 19
2015	2,889.62	2,884.53	Mar 15	2,893.01	Jun 13
2014	2,889.44	2,883.57	Mar 16	2,892.92	Jul 18
2013	2,889.35	2,883.47	Mar 18	2,892.92	Jul 6
2012	2,889.54	2,883.90	Mar 30	2,893.00	Jun 29
2011	2,889.55	2,884.84	Mar 17	2,892.97	Aug 1
2010	2,889.53	2,884.64	Mar 22	2,892.96	Jul 15
2009	2,889.03	2,883.30	Apr 9	2,892.95	Jun 20
2008	2,889.00	2,883.11	Apr 10	2,892.96	Aug 15
2007	2,889.68	2,884.19	Mar 13	2,893.01	Jul 19
2006	2,889.84	2,883.76	Mar 30	2,892.91	Jul 2
2005	2,890.57	2,887.17	Jan 20	2,892.97	Jul 25
2004	2,889.70	2,883.54	Mar 24	2,892.99	Aug 28
2003	2,890.29	2,887.24	Mar 12	2,892.99	Jun 24
2002	2,889.78	2,883.76	Apr 7	2,892.98	Aug 4
2001	2,889.11	2,884.48	Feb 3	2,892.67	Jun 19
2000	2,888.91	2,883.88	Apr 5	2,893.00	Jun 17
1999	2,888.85	2,883.43	Feb 23	2,892.97	Jul 16
1998	2,888.28	2,883.08	Mar 17	2,893.03	Jun 18
1997	2,889.73	2,884.81	Mar 21	2,892.99	Jul 12
1996	2,890.55	2,886.67	Apr 10	2,892.98	Jul 13
1995	2,889.41	2,883.49	Apr 5	2,892.92	Jul 5
1994	2,889.03	2,883.29	Apr 3	2,892.89	Aug 4
1993	2,889.00	2,883.52	Apr 2	2,893.00	Jun 22
1992	2,888.71	2,883.05	Apr 3	2,893.03	Jun 30
1991	2,889.58	2,885.16	Mar 25	2,893.05	Sep 17
1990	2,889.65	2,884.14	Mar 10	2,893.11	Jul 20

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

Monthly averages

Month	Average	Lowest	Highest
January	2,887.25	2,883.93	2,892.77
February	2,885.74	2,883.19	2,891.66
March	2,884.82	2,883.07	2,889.46
April	2,885.59	2,883.05	2,890.47
May	2,888.77	2,883.85	2,892.66
June	2,892.30	2,889.62	2,893.59
July	2,892.75	2,890.73	2,893.29
August	2,892.63	2,890.39	2,893.10
September	2,892.40	2,890.26	2,893.14
October	2,891.79	2,889.99	2,892.90
November	2,890.79	2,886.86	2,892.75
December	2,889.24	2,884.93	2,892.89

Download

Daily levels as CSV (13,402 rows; credit the original agencies listed below)