Lake Shannon water level history

Daily records since 1974 · Level today: 417.46 ft

Highest on record

442.12 ft

Jun 27, 2008

Lowest on record

368.46 ft

Feb 22, 1979

Today

417.46 ft

Oct 21, 2026

Years of data

since 1974

In short

Across 46 complete years, 2019 had the lowest average level (411.47 ft) and 1980 the highest (432.04 ft).

On average the lake is lowest in March (409.57 ft) and highest in July (432.61 ft).

Lake Shannon 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.

1979368.46 ft on Feb 22
1975370.58 ft on Mar 20
2008375.85 ft on Mar 17
1991376.42 ft on Mar 21
2012379.65 ft on Mar 1

Yearly highs and lows

Year	Average	Low	Low date	High	High date
2026 (293 days)	417.64	392.68	Mar 17	438.96	Jan 14
2025	424.47	393.78	Feb 20	441.16	Dec 19
2024	423.80	399.23	May 19	440.64	Feb 1
2023	417.09	392.37	Mar 30	439.69	Jul 1
2022	421.14	396.86	May 14	441.25	Jan 12
2021	421.29	398.46	May 13	441.29	Nov 16
2020	420.24	395.39	Apr 27	441.77	Jul 2
2019	411.47	391.08	May 7	438.64	Jul 23
2018	419.43	390.02	Apr 5	439.16	Jun 19
2017	423.84	403.18	Oct 3	441.13	May 27
2016	428.19	405.55	Sep 22	440.69	Jun 2
2015	420.73	397.51	May 12	440.38	Mar 29
2014	422.85	390.01	Sep 23	439.68	May 24
2013	423.70	394.73	Feb 28	440.99	Apr 3
2012	413.56	379.65	Mar 1	438.31	Jun 17
2011	418.12	388.40	Mar 1	439.80	Jul 22
2010	422.63	388.24	Sep 1	441.66	Jun 26
2009	421.63	399.42	Sep 19	439.13	Oct 30
2008	415.85	375.85	Mar 17	442.12	Jun 27
2007	424.10	394.74	Sep 17	441.04	Jul 25
2006 (93 days)	432.16	420.20	Dec 8	441.31	Oct 23
2005 (272 days)	430.43	408.77	Sep 14	441.89	Jul 27
2004	415.65	380.37	Feb 15	441.35	Dec 16
2003	420.84	397.18	May 8	437.51	Jan 27
2002	420.05	381.95	Sep 27	437.61	Jun 26
2001 (92 days)	431.58	422.96	Oct 5	437.79	Nov 18
2000 (274 days)	417.98	398.87	Mar 31	437.70	Jun 29
1999	426.21	400.50	May 14	438.30	Nov 12
1998	423.90	393.21	Apr 7	438.26	Dec 15
1997	424.06	395.44	Mar 19	437.88	Jun 5
1996	419.46	389.41	Mar 25	437.85	Jan 18
1995 (230 days)	432.78	409.93	Apr 19	438.53	Feb 6
1994	427.67	403.82	Apr 9	438.06	Dec 27
1993	422.92	386.80	Apr 6	438.25	Aug 17
1992	425.96	381.00	Mar 8	438.47	May 7
1991	419.75	376.42	Mar 21	438.31	Aug 29
1990	423.96	395.63	Mar 16	438.54	Dec 8
1989	422.33	389.12	Mar 5	438.58	Jun 14
1988	423.22	398.07	Mar 30	437.62	Nov 6
1987	420.48	388.09	Feb 23	438.29	Sep 22
1986	429.10	410.36	Feb 22	438.61	Aug 21
1985	420.71	391.08	Mar 17	438.57	Oct 28
1984	426.82	394.34	Apr 12	438.54	Jan 6
1983	427.01	389.90	Apr 14	438.57	Jul 20
1982	421.55	383.41	Apr 29	438.40	Jul 31
1981	427.00	395.76	Apr 20	438.58	Jul 5
1980	432.04	409.83	Apr 5	438.63	Jul 31
1979	422.23	368.46	Feb 22	438.62	Aug 31
1978	426.00	408.90	Apr 14	438.60	Jul 31
1977	426.95	396.41	Apr 25	438.18	Nov 17
1976	421.94	390.92	Apr 21	438.59	Aug 15
1975	418.73	370.58	Mar 20	438.82	Aug 15
1974 (92 days)	431.95	415.54	Dec 31	438.60	Oct 1

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

Monthly averages

Month	Average	Lowest	Highest
January	423.52	389.33	441.25
February	416.62	368.46	440.64
March	409.57	370.58	440.38
April	410.70	370.94	440.99
May	417.01	388.63	441.38
June	429.00	386.82	442.12
July	432.61	405.49	441.89
August	426.42	389.36	438.82
September	421.25	381.95	438.60
October	425.88	383.41	441.31
November	430.53	402.61	441.29
December	427.91	393.28	441.35

Download

Daily levels as CSV (18,079 rows; credit the original agencies listed below)