Boundary Lake water level history
Daily records since 1990 · Level today: 1,973.21 ft
Highest on record
1,990.55 ft
May 28, 1996
Lowest on record
1,282.40 ft
Jan 19, 2007
Today
1,973.21 ft
Oct 21, 2026
Years of data
37
since 1990
In short
Across 35 complete years, 2007 had the lowest average level (1,979.73 ft) and 1998 the highest (1,985.11 ft).
On average the lake is lowest in January (1,980.90 ft) and highest in June (1,984.46 ft).
Boundary Lake 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.
- 2007
- 1993
- 1996
- 1991
- 2002
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (286 days) | 1,981.93 | 1,971.03 | Oct 13 | 1,987.94 | May 12 |
| 2025 | 1,981.98 | 1,971.13 | Apr 27 | 1,988.68 | May 21 |
| 2024 | 1,981.45 | 1,970.99 | Sep 17 | 1,987.17 | Oct 9 |
| 2023 | 1,982.76 | 1,973.99 | Apr 30 | 1,987.16 | Oct 30 |
| 2022 | 1,981.83 | 1,972.52 | May 5 | 1,988.46 | May 31 |
| 2021 | 1,982.61 | 1,974.99 | Dec 11 | 1,987.97 | May 29 |
| 2020 | 1,982.57 | 1,970.24 | Mar 14 | 1,988.16 | Nov 1 |
| 2019 | 1,981.57 | 1,971.11 | May 7 | 1,989.30 | Apr 22 |
| 2018 | 1,982.70 | 1,971.78 | Oct 4 | 1,988.27 | Feb 18 |
| 2017 | 1,983.10 | 1,972.24 | Jan 18 | 1,988.72 | Jun 28 |
| 2016 | 1,981.52 | 1,971.43 | May 15 | 1,988.21 | Oct 25 |
| 2015 | 1,980.98 | 1,971.67 | Nov 24 | 1,988.09 | Aug 31 |
| 2014 | 1,982.73 | 1,972.31 | Sep 17 | 1,988.86 | May 7 |
| 2013 | 1,983.17 | 1,970.77 | Oct 17 | 1,989.09 | Apr 8 |
| 2012 | 1,983.64 | 1,972.75 | Jan 15 | 1,989.59 | Jun 5 |
| 2011 | 1,981.85 | 1,961.39 | Sep 15 | 1,989.06 | May 21 |
| 2010 | 1,981.72 | 1,959.40 | Sep 11 | 1,988.43 | May 11 |
| 2009 | 1,980.90 | 1,962.03 | Oct 24 | 1,988.58 | Jun 11 |
| 2008 | 1,982.04 | 1,968.09 | Jul 23 | 1,989.42 | May 23 |
| 2007 | 1,979.73 | 1,282.40 | Jan 19 | 1,988.55 | Mar 23 |
| 2006 | 1,982.30 | 1,971.58 | Oct 7 | 1,988.97 | Apr 19 |
| 2005 | 1,980.93 | 1,971.56 | Dec 16 | 1,989.38 | Jun 23 |
| 2004 | 1,980.25 | 1,970.33 | Sep 19 | 1,987.93 | Aug 24 |
| 2003 | 1,982.00 | 1,971.31 | Apr 26 | 1,989.61 | May 30 |
| 2002 | 1,983.27 | 1,895.57 | Oct 28 | 1,988.37 | May 24 |
| 2001 | 1,983.83 | 1,962.20 | May 17 | 1,988.79 | May 20 |
| 2000 | 1,982.88 | 1,972.20 | Apr 27 | 1,988.46 | Nov 24 |
| 1999 | 1,983.75 | 1,966.74 | May 18 | 1,988.92 | Mar 1 |
| 1998 | 1,985.11 | 1,977.81 | May 20 | 1,989.06 | Jul 5 |
| 1997 | 1,984.45 | 1,977.48 | Oct 21 | 1,989.68 | Mar 29 |
| 1996 | 1,984.22 | 1,685.89 | Dec 22 | 1,990.55 | May 28 |
| 1995 | 1,983.50 | 1,966.31 | Dec 3 | 1,990.29 | Dec 1 |
| 1994 | 1,984.06 | 1,972.77 | May 10 | 1,989.44 | Jul 25 |
| 1993 | 1,982.12 | 1,582.50 | Apr 14 | 1,988.28 | Feb 28 |
| 1991 | 1,982.32 | 1,878.86 | Oct 18 | 1,989.77 | Jul 13 |
| 1990 | 1,982.39 | 1,972.45 | Jan 31 | 1,990.31 | May 28 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 1,980.90 | 1,282.40 | 1,988.64 |
| February | 1,982.18 | 1,971.42 | 1,988.73 |
| March | 1,982.54 | 1,970.24 | 1,989.68 |
| April | 1,981.78 | 1,582.50 | 1,989.50 |
| May | 1,982.67 | 1,962.20 | 1,990.55 |
| June | 1,984.46 | 1,974.18 | 1,990.53 |
| July | 1,983.59 | 1,968.09 | 1,989.97 |
| August | 1,984.09 | 1,900.00 | 1,988.63 |
| September | 1,982.36 | 1,959.40 | 1,988.91 |
| October | 1,980.92 | 1,878.86 | 1,988.21 |
| November | 1,981.94 | 1,968.81 | 1,989.29 |
| December | 1,981.86 | 1,685.89 | 1,990.29 |
Download
Daily levels as CSV (12,976 rows; credit the original agencies listed below)