Marsh Lake Dam water level history
Daily records since 1990 · Level today: 937.32 ft
Highest on record
948.48 ft
Apr 7, 1997
Lowest on record
933.76 ft
May 1, 2020
Today
937.32 ft
Oct 21, 2026
Years of data
37
since 1990
In short
Across 32 complete years, 2020 had the lowest average level (935.66 ft) and 1995 the highest (939.80 ft).
On average the lake is lowest in January (938.04 ft) and highest in April (939.79 ft).
Marsh Lake Dam 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.
- 2020
- 2021
- 2023
- 2022
- 1991
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (281 days) | 937.10 | 935.05 | Jun 9 | 939.14 | Mar 13 |
| 2025 | 938.92 | 937.51 | Feb 22 | 943.50 | Jul 1 |
| 2024 | 938.62 | 937.20 | Apr 6 | 941.41 | May 13 |
| 2023 | 938.17 | 936.87 | Sep 21 | 944.36 | Apr 20 |
| 2022 | 938.66 | 936.96 | Oct 23 | 942.69 | May 18 |
| 2021 | 936.35 | 934.30 | Aug 20 | 939.13 | May 9 |
| 2020 | 935.66 | 933.76 | May 1 | 939.58 | Mar 16 |
| 2019 (319 days) | 939.03 | 935.79 | Dec 31 | 945.10 | Mar 30 |
| 2018 | 939.00 | 937.59 | Dec 30 | 942.20 | Apr 27 |
| 2017 | 939.34 | 938.35 | Aug 12 | 941.82 | Oct 10 |
| 2016 | 938.59 | 937.82 | Jul 3 | 940.04 | Dec 6 |
| 2015 | 938.60 | 937.86 | Oct 18 | 940.43 | May 22 |
| 2014 (296 days) | 939.27 | 938.25 | Jan 1 | 942.55 | Jun 26 |
| 2013 (279 days) | 938.96 | 937.85 | Sep 14 | 941.40 | Jun 28 |
| 2012 | 938.43 | 937.62 | Oct 12 | 939.72 | Apr 25 |
| 2011 (284 days) | 939.93 | 938.36 | Dec 10 | 944.91 | Apr 7 |
| 2010 | 939.34 | 938.36 | Aug 6 | 945.18 | Mar 24 |
| 2009 | 939.10 | 938.05 | Sep 30 | 943.62 | Mar 28 |
| 2008 | 938.82 | 937.84 | Sep 22 | 941.57 | Jun 20 |
| 2007 | 939.12 | 937.72 | Sep 15 | 941.14 | Apr 8 |
| 2006 | 938.58 | 937.69 | Aug 31 | 941.05 | Apr 11 |
| 2005 | 938.60 | 937.97 | Aug 24 | 941.15 | Jun 21 |
| 2004 | 938.21 | 937.58 | May 11 | 939.03 | Nov 13 |
| 2003 | 938.15 | 937.37 | Oct 10 | 939.51 | Jul 9 |
| 2002 | 938.38 | 937.80 | Sep 24 | 939.80 | Apr 11 |
| 2001 | 939.04 | 937.78 | Jan 2 | 946.04 | Apr 14 |
| 2000 | 938.22 | 937.71 | Nov 5 | 939.24 | May 13 |
| 1999 | 938.65 | 937.90 | Nov 20 | 939.86 | May 23 |
| 1998 | 938.97 | 937.21 | Jan 21 | 941.41 | Apr 13 |
| 1997 | 939.38 | 937.80 | Oct 11 | 948.48 | Apr 7 |
| 1996 | 938.86 | 937.60 | Oct 4 | 941.44 | Mar 21 |
| 1995 | 939.80 | 938.05 | Feb 13 | 942.74 | Jul 11 |
| 1994 | 939.17 | 938.07 | Nov 16 | 942.33 | Mar 25 |
| 1993 | 939.34 | 937.92 | Jan 6 | 942.93 | Aug 2 |
| 1992 | 938.42 | 937.72 | Oct 19 | 941.16 | Jun 23 |
| 1991 | 938.46 | 937.01 | Mar 12 | 940.78 | Aug 8 |
| 1990 | 937.79 | 937.50 | Nov 5 | 938.22 | Jun 17 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 938.04 | 934.85 | 939.90 |
| February | 938.14 | 935.25 | 941.32 |
| March | 938.85 | 935.18 | 945.18 |
| April | 939.79 | 933.90 | 948.48 |
| May | 939.38 | 933.76 | 943.53 |
| June | 939.13 | 934.04 | 943.47 |
| July | 938.83 | 934.21 | 943.50 |
| August | 938.37 | 934.30 | 942.93 |
| September | 938.14 | 934.22 | 940.80 |
| October | 938.30 | 934.71 | 941.82 |
| November | 938.32 | 934.58 | 941.15 |
| December | 938.16 | 934.65 | 940.04 |
Download
Daily levels as CSV (13,033 rows; credit the original agencies listed below)