Pomona Lake water level history
Daily records since 1989 · Level today: 974.55 ft
Highest on record
1,463.71 ft
Mar 10, 1992
Lowest on record
809.99 ft
Feb 3, 1994
Today
974.55 ft
Oct 21, 2026
Years of data
37
since 1989
In short
Across 36 complete years, 1994 had the lowest average level (971.18 ft) and 2019 the highest (981.30 ft).
On average the lake is lowest in February (972.02 ft) and highest in May (978.22 ft).
Pomona Lake 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.
- 1994
- 1993
- 1992
- 1990
- 1998
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (292 days) | 974.96 | 972.23 | Mar 17 | 981.06 | Jun 1 |
| 2025 | 974.42 | 972.39 | Mar 12 | 982.78 | Jun 9 |
| 2024 | 975.08 | 973.02 | Nov 1 | 985.34 | Jul 5 |
| 2023 | 974.19 | 971.58 | Feb 8 | 979.59 | Jun 1 |
| 2022 | 974.59 | 971.89 | Dec 31 | 982.10 | Jun 3 |
| 2021 | 976.79 | 972.20 | Jan 24 | 993.11 | May 29 |
| 2020 | 974.29 | 972.11 | Jan 9 | 978.97 | May 8 |
| 2019 | 981.30 | 972.40 | Feb 13 | 1,001.80 | Jun 7 |
| 2018 | 972.60 | 971.14 | Aug 22 | 978.04 | Oct 16 |
| 2017 | 975.63 | 971.80 | Mar 24 | 981.36 | Apr 6 |
| 2016 | 975.84 | 972.50 | Feb 10 | 987.03 | Jun 1 |
| 2015 | 974.93 | 971.71 | Apr 11 | 991.94 | Jun 7 |
| 2014 | 973.18 | 972.01 | Apr 12 | 979.71 | Jun 16 |
| 2013 | 971.98 | 969.84 | Apr 8 | 974.02 | Jun 21 |
| 2012 | 973.43 | 970.43 | Dec 31 | 977.43 | Mar 26 |
| 2011 | 973.58 | 971.97 | Dec 2 | 977.50 | Jun 2 |
| 2010 | 975.05 | 971.99 | Jan 1 | 984.89 | May 23 |
| 2009 | 975.50 | 971.97 | Dec 28 | 986.05 | May 4 |
| 2008 | 975.45 | 972.05 | Jan 14 | 981.49 | Jun 15 |
| 2007 | 976.10 | 972.02 | Feb 11 | 993.33 | May 11 |
| 2006 | 973.78 | 971.90 | Mar 18 | 978.30 | May 11 |
| 2005 | 976.09 | 972.04 | Mar 8 | 989.56 | Jun 15 |
| 2004 | 974.90 | 972.41 | Apr 16 | 980.46 | Mar 9 |
| 2003 | 973.45 | 970.59 | Apr 18 | 977.73 | Jun 26 |
| 2002 | 973.21 | 969.69 | Jan 28 | 982.14 | May 31 |
| 2001 | 974.93 | 969.87 | Dec 31 | 980.74 | Jun 24 |
| 2000 | 973.77 | 970.75 | Jan 18 | 977.23 | Jan 1 |
| 1999 | 976.18 | 971.93 | Jan 8 | 991.55 | May 6 |
| 1998 | 977.12 | 965.94 | Jul 30 | 996.06 | Nov 11 |
| 1997 | 974.81 | 972.12 | Jan 14 | 981.92 | Apr 16 |
| 1996 | 974.48 | 970.27 | Apr 27 | 987.91 | Jun 10 |
| 1995 | 976.04 | 971.60 | Dec 31 | 998.38 | Jun 12 |
| 1994 | 971.18 | 809.99 | Feb 3 | 981.50 | May 16 |
| 1993 | 974.00 | 865.89 | Oct 29 | 992.66 | Aug 4 |
| 1992 | 975.06 | 926.99 | Nov 30 | 1,463.71 | Mar 10 |
| 1991 | 973.25 | 967.51 | Apr 12 | 1,019.41 | Oct 3 |
| 1990 | 974.31 | 954.40 | Jun 17 | 984.06 | May 22 |
| 1989 (1 days) | 972.45 | 972.45 | Dec 31 | 972.45 | Dec 31 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 972.27 | 842.41 | 978.03 |
| February | 972.02 | 809.99 | 979.05 |
| March | 973.75 | 930.31 | 1,463.71 |
| April | 974.85 | 967.51 | 989.63 |
| May | 978.22 | 969.95 | 1,001.54 |
| June | 978.09 | 899.99 | 1,001.80 |
| July | 976.07 | 965.07 | 995.55 |
| August | 974.70 | 970.18 | 992.66 |
| September | 974.42 | 950.95 | 1,006.09 |
| October | 974.48 | 865.89 | 1,019.41 |
| November | 974.40 | 873.11 | 996.06 |
| December | 973.41 | 907.35 | 984.86 |
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Daily levels as CSV (13,417 rows; credit the original agencies listed below)