Somerville Lake water level history
Daily records since 2000 · Level today: 236.38 ft
Highest on record
259.77 ft
May 29, 2016
Lowest on record
227.61 ft
Dec 13, 2011
Today
236.38 ft
Oct 21, 2026
Years of data
26
since 2000
In short
Across 24 complete years, 2011 had the lowest average level (232.21 ft) and 2015 the highest (243.50 ft).
On average the lake is lowest in October (236.50 ft) and highest in June (240.09 ft).
Somerville 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.
- 2011
- 2012
- 2013
- 2023
- 2024
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (290 days) | 236.68 | 234.09 | Apr 1 | 240.80 | Jun 20 |
| 2025 | 236.75 | 235.07 | Dec 31 | 239.43 | Jun 18 |
| 2024 | 237.56 | 231.87 | Jan 2 | 240.65 | May 22 |
| 2023 | 235.48 | 231.79 | Dec 20 | 243.05 | May 18 |
| 2022 (302 days) | 236.79 | 232.21 | Oct 19 | 239.58 | Mar 27 |
| 2021 | 238.08 | 235.50 | Jan 2 | 244.88 | Jun 8 |
| 2020 | 237.14 | 235.26 | Dec 18 | 238.47 | Mar 24 |
| 2019 | 242.43 | 237.62 | Oct 23 | 253.31 | May 14 |
| 2018 | 238.09 | 235.25 | Sep 7 | 244.74 | Dec 31 |
| 2017 | 240.25 | 237.33 | Aug 25 | 254.98 | Sep 4 |
| 2016 | 243.26 | 238.03 | Oct 31 | 259.77 | May 29 |
| 2015 | 243.50 | 237.54 | Oct 21 | 258.32 | Jun 2 |
| 2014 | 236.76 | 235.13 | Jan 7 | 239.03 | May 31 |
| 2013 | 234.42 | 230.70 | Sep 28 | 236.40 | Jan 30 |
| 2012 | 236.23 | 227.87 | Jan 15 | 243.05 | Apr 1 |
| 2011 | 232.21 | 227.61 | Dec 13 | 236.19 | Feb 1 |
| 2010 | 237.96 | 235.97 | Dec 23 | 242.71 | Feb 16 |
| 2009 | 236.09 | 233.96 | Sep 9 | 240.51 | Nov 1 |
| 2008 | 237.01 | 235.05 | Dec 22 | 238.98 | Feb 19 |
| 2007 | 239.21 | 237.30 | Nov 17 | 242.66 | Jul 29 |
| 2006 | 235.96 | 234.70 | Jan 19 | 239.06 | Oct 23 |
| 2005 | 237.53 | 234.73 | Dec 6 | 242.87 | Feb 11 |
| 2004 | 239.45 | 237.65 | Jan 1 | 247.47 | Nov 30 |
| 2003 | 239.84 | 237.43 | Aug 30 | 249.56 | Feb 27 |
| 2002 | 238.99 | 237.52 | Oct 1 | 246.07 | Nov 10 |
| 2001 | 238.65 | 237.04 | Aug 26 | 242.41 | Dec 22 |
| 2000 (92 days) | 235.14 | 232.62 | Oct 5 | 239.08 | Dec 31 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 237.44 | 227.87 | 248.38 |
| February | 237.76 | 229.53 | 249.56 |
| March | 238.08 | 234.11 | 249.45 |
| April | 237.97 | 234.09 | 246.10 |
| May | 239.09 | 234.44 | 259.77 |
| June | 240.09 | 233.68 | 259.28 |
| July | 239.09 | 231.33 | 255.23 |
| August | 237.57 | 229.03 | 254.43 |
| September | 237.01 | 228.28 | 254.98 |
| October | 236.50 | 227.79 | 249.05 |
| November | 237.18 | 227.62 | 247.47 |
| December | 237.35 | 227.61 | 247.32 |
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Daily levels as CSV (9,399 rows; credit the original agencies listed below)