Keyhole Reservoir water level history

Daily records since 1989 · Level today: 4,083.74 ft

Highest on record

4,101.99 ft

Mar 29, 2019

Lowest on record

4,016.67 ft

Jan 17, 1990

Today

4,083.74 ft

Oct 21, 2026

Years of data

since 1989

In short

Across 30 complete years, 1992 had the lowest average level (4,069.27 ft) and 2015 the highest (4,097.70 ft).

On average the lake is lowest in January (4,088.64 ft) and highest in June (4,090.81 ft).

Keyhole Reservoir 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.

19924,016.67 ft on Jan 9
19914,016.67 ft on Feb 1
19904,016.67 ft on Jan 17
19934,060.34 ft on Jan 1
20084,078.11 ft on Jan 3

Yearly highs and lows

Year	Average	Low	Low date	High	High date
2026 (294 days)	4,087.55	4,083.74	Oct 20	4,089.26	Mar 14
2025	4,089.78	4,089.19	Dec 6	4,090.44	Jun 12
2024	4,091.15	4,089.40	Oct 12	4,092.67	May 18
2023	4,091.82	4,090.31	Jan 1	4,092.78	Jul 12
2022	4,091.57	4,090.29	Nov 28	4,092.92	Jun 14
2021	4,093.77	4,091.81	Oct 9	4,095.33	Mar 26
2020	4,096.89	4,095.07	Dec 3	4,099.58	Mar 14
2019	4,097.60	4,095.88	Jan 1	4,101.99	Mar 29
2018	4,094.86	4,090.44	Jan 6	4,096.59	Jun 30
2017	4,093.08	4,090.43	Dec 10	4,094.89	May 6
2016	4,095.68	4,093.93	Dec 11	4,097.14	May 2
2015	4,097.70	4,096.78	Nov 27	4,099.56	Jun 28
2014	4,097.18	4,095.72	Jan 1	4,097.99	Jun 18
2013	4,095.20	4,094.64	Jan 1	4,095.75	Oct 22
2012	4,096.71	4,094.62	Dec 22	4,099.44	Mar 17
2011	4,094.65	4,088.88	Jan 2	4,097.79	Jun 20
2010	4,088.79	4,087.53	Jan 3	4,090.13	Jun 27
2009	4,087.43	4,085.02	Jan 4	4,088.68	May 12
2008	4,082.79	4,078.11	Jan 3	4,085.79	Jul 23
2007 (286 days)	4,079.15	4,076.93	Jan 4	4,081.58	Jun 17
2006 (275 days)	4,080.85	4,076.87	Nov 2	4,082.57	May 28
2005	4,084.10	4,081.59	Nov 18	4,086.52	May 20
2004 (102 days)	4,085.27	4,085.17	Oct 14	4,085.52	Sep 20
2003 (195 days)	4,090.81	4,089.16	Jan 2	4,092.31	Jul 1
2002	4,092.45	4,089.15	Nov 30	4,095.16	May 4
2001 (322 days)	4,095.74	4,094.77	Dec 31	4,096.98	Jun 22
2000	4,096.41	4,095.20	Oct 30	4,097.39	May 23
1999	4,097.65	4,096.84	Dec 15	4,099.05	Jun 16
1998	4,097.67	4,095.46	Oct 5	4,098.35	Nov 1
1997	4,097.04	4,092.73	Jan 6	4,098.54	Apr 25
1996	4,092.60	4,087.89	Jan 1	4,094.66	Jun 4
1995 (325 days)	4,083.50	4,051.76	Nov 16	4,088.76	Jun 15
1994	4,084.76	4,079.74	Jan 6	4,087.57	May 16
1993	4,072.98	4,060.34	Jan 1	4,080.37	Aug 24
1992	4,069.27	4,016.67	Jan 9	4,071.47	Jan 6
1991	4,069.76	4,016.67	Feb 1	4,071.47	Mar 8
1990	4,069.60	4,016.67	Jan 17	4,071.47	Jan 14
1989 (1 days)	4,071.05	4,071.05	Dec 31	4,071.05	Dec 31

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

Monthly averages

Month	Average	Lowest	Highest
January	4,088.64	4,016.67	4,097.51
February	4,088.77	4,016.67	4,097.63
March	4,089.58	4,016.67	4,101.99
April	4,090.00	4,016.67	4,101.69
May	4,090.41	4,016.67	4,099.66
June	4,090.81	4,016.67	4,099.68
July	4,090.41	4,016.67	4,099.49
August	4,089.44	4,016.67	4,098.59
September	4,088.69	4,016.67	4,097.97
October	4,089.19	4,016.67	4,098.33
November	4,089.37	4,016.67	4,098.35
December	4,089.18	4,016.67	4,097.50

Download

Daily levels as CSV (12,701 rows; credit the original agencies listed below)