Country: USA
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Stillwater Reservoir water level history

Daily records since 1999 · Level today: 1,666.96 ft

Highest on record
1,680.12 ft
Apr 29, 2011
Lowest on record
1,651.32 ft
Aug 10, 2001
Today
1,666.96 ft
Oct 23, 2026
Years of data
27
since 1999

In short

Across 26 complete years, 2001 had the lowest average level (1,662.55 ft) and 2006 the highest (1,675.90 ft).

On average the lake is lowest in March (1,667.38 ft) and highest in June (1,677.05 ft).

Stillwater Reservoir level, all years

Loading chart…

Measured Normal range for the date (middle 50% of past years)

Each year's lowest and highest level

1,6501,6581,6661,6741,682199920032007201120152019202320261999: lowest 1,661.48 ft (1999-10-13), highest 1,668.67 ft (1999-12-31), average 1,665.07 ft, 92 days measured2000: lowest 1,665.49 ft (2000-11-25), highest 1,679.30 ft (2000-05-15), average 1,672.63 ft, 366 days measured2001: lowest 1,651.32 ft (2001-08-10), highest 1,675.16 ft (2001-05-02), average 1,662.55 ft, 365 days measured2002: lowest 1,662.17 ft (2002-01-24), highest 1,678.68 ft (2002-05-19), average 1,670.10 ft, 365 days measured2003: lowest 1,657.78 ft (2003-03-12), highest 1,679.57 ft (2003-05-29), average 1,672.27 ft, 365 days measured2004: lowest 1,661.05 ft (2004-03-26), highest 1,680.01 ft (2004-05-27), average 1,673.08 ft, 366 days measured2005: lowest 1,660.95 ft (2005-03-29), highest 1,679.03 ft (2005-12-06), average 1,672.12 ft, 365 days measured2006: lowest 1,669.01 ft (2006-10-16), highest 1,679.59 ft (2006-07-03), average 1,675.90 ft, 365 days measured2007: lowest 1,665.46 ft (2007-10-19), highest 1,679.74 ft (2007-01-16), average 1,673.47 ft, 365 days measured2008: lowest 1,669.28 ft (2008-10-24), highest 1,679.49 ft (2008-04-19), average 1,674.27 ft, 366 days measured2009: lowest 1,663.96 ft (2009-03-07), highest 1,678.88 ft (2009-05-31), average 1,672.19 ft, 365 days measured2010: lowest 1,664.78 ft (2010-03-12), highest 1,677.84 ft (2010-07-01), average 1,672.34 ft, 365 days measured2011: lowest 1,665.53 ft (2011-03-05), highest 1,680.12 ft (2011-04-29), average 1,672.18 ft, 365 days measured2012: lowest 1,665.35 ft (2012-12-02), highest 1,678.24 ft (2012-05-11), average 1,670.50 ft, 366 days measured2013: lowest 1,665.50 ft (2013-03-12), highest 1,679.34 ft (2013-06-13), average 1,671.28 ft, 365 days measured2014: lowest 1,663.49 ft (2014-03-30), highest 1,678.75 ft (2014-06-29), average 1,672.22 ft, 365 days measured2015: lowest 1,657.77 ft (2015-04-02), highest 1,679.42 ft (2015-06-25), average 1,669.73 ft, 365 days measured2016: lowest 1,666.27 ft (2016-10-20), highest 1,677.53 ft (2016-06-14), average 1,672.18 ft, 366 days measured2017: lowest 1,667.21 ft (2017-02-23), highest 1,679.72 ft (2017-07-02), average 1,673.36 ft, 365 days measured2018: lowest 1,664.98 ft (2018-10-10), highest 1,677.87 ft (2018-05-07), average 1,671.81 ft, 365 days measured2019: lowest 1,663.94 ft (2019-03-30), highest 1,679.44 ft (2019-05-29), average 1,672.96 ft, 365 days measured2020: lowest 1,662.67 ft (2020-03-10), highest 1,676.17 ft (2020-06-21), average 1,669.68 ft, 366 days measured2021: lowest 1,660.99 ft (2021-03-11), highest 1,677.84 ft (2021-05-26), average 1,671.81 ft, 365 days measured2022: lowest 1,662.49 ft (2022-02-16), highest 1,678.23 ft (2022-04-26), average 1,672.09 ft, 365 days measured2023: lowest 1,663.30 ft (2023-03-17), highest 1,678.72 ft (2023-08-20), average 1,671.61 ft, 365 days measured2024: lowest 1,665.67 ft (2024-12-10), highest 1,679.95 ft (2024-07-17), average 1,672.41 ft, 366 days measured2025: lowest 1,663.14 ft (2025-03-05), highest 1,678.36 ft (2025-05-21), average 1,671.04 ft, 365 days measured2026: lowest 1,661.35 ft (2026-03-06), highest 1,679.00 ft (2026-04-19), average 1,671.62 ft, 292 days measured
1,6501,6581,6661,6741,682199920062013202020261999: lowest 1,661.48 ft (1999-10-13), highest 1,668.67 ft (1999-12-31), average 1,665.07 ft, 92 days measured2000: lowest 1,665.49 ft (2000-11-25), highest 1,679.30 ft (2000-05-15), average 1,672.63 ft, 366 days measured2001: lowest 1,651.32 ft (2001-08-10), highest 1,675.16 ft (2001-05-02), average 1,662.55 ft, 365 days measured2002: lowest 1,662.17 ft (2002-01-24), highest 1,678.68 ft (2002-05-19), average 1,670.10 ft, 365 days measured2003: lowest 1,657.78 ft (2003-03-12), highest 1,679.57 ft (2003-05-29), average 1,672.27 ft, 365 days measured2004: lowest 1,661.05 ft (2004-03-26), highest 1,680.01 ft (2004-05-27), average 1,673.08 ft, 366 days measured2005: lowest 1,660.95 ft (2005-03-29), highest 1,679.03 ft (2005-12-06), average 1,672.12 ft, 365 days measured2006: lowest 1,669.01 ft (2006-10-16), highest 1,679.59 ft (2006-07-03), average 1,675.90 ft, 365 days measured2007: lowest 1,665.46 ft (2007-10-19), highest 1,679.74 ft (2007-01-16), average 1,673.47 ft, 365 days measured2008: lowest 1,669.28 ft (2008-10-24), highest 1,679.49 ft (2008-04-19), average 1,674.27 ft, 366 days measured2009: lowest 1,663.96 ft (2009-03-07), highest 1,678.88 ft (2009-05-31), average 1,672.19 ft, 365 days measured2010: lowest 1,664.78 ft (2010-03-12), highest 1,677.84 ft (2010-07-01), average 1,672.34 ft, 365 days measured2011: lowest 1,665.53 ft (2011-03-05), highest 1,680.12 ft (2011-04-29), average 1,672.18 ft, 365 days measured2012: lowest 1,665.35 ft (2012-12-02), highest 1,678.24 ft (2012-05-11), average 1,670.50 ft, 366 days measured2013: lowest 1,665.50 ft (2013-03-12), highest 1,679.34 ft (2013-06-13), average 1,671.28 ft, 365 days measured2014: lowest 1,663.49 ft (2014-03-30), highest 1,678.75 ft (2014-06-29), average 1,672.22 ft, 365 days measured2015: lowest 1,657.77 ft (2015-04-02), highest 1,679.42 ft (2015-06-25), average 1,669.73 ft, 365 days measured2016: lowest 1,666.27 ft (2016-10-20), highest 1,677.53 ft (2016-06-14), average 1,672.18 ft, 366 days measured2017: lowest 1,667.21 ft (2017-02-23), highest 1,679.72 ft (2017-07-02), average 1,673.36 ft, 365 days measured2018: lowest 1,664.98 ft (2018-10-10), highest 1,677.87 ft (2018-05-07), average 1,671.81 ft, 365 days measured2019: lowest 1,663.94 ft (2019-03-30), highest 1,679.44 ft (2019-05-29), average 1,672.96 ft, 365 days measured2020: lowest 1,662.67 ft (2020-03-10), highest 1,676.17 ft (2020-06-21), average 1,669.68 ft, 366 days measured2021: lowest 1,660.99 ft (2021-03-11), highest 1,677.84 ft (2021-05-26), average 1,671.81 ft, 365 days measured2022: lowest 1,662.49 ft (2022-02-16), highest 1,678.23 ft (2022-04-26), average 1,672.09 ft, 365 days measured2023: lowest 1,663.30 ft (2023-03-17), highest 1,678.72 ft (2023-08-20), average 1,671.61 ft, 365 days measured2024: lowest 1,665.67 ft (2024-12-10), highest 1,679.95 ft (2024-07-17), average 1,672.41 ft, 366 days measured2025: lowest 1,663.14 ft (2025-03-05), highest 1,678.36 ft (2025-05-21), average 1,671.04 ft, 365 days measured2026: lowest 1,661.35 ft (2026-03-06), highest 1,679.00 ft (2026-04-19), average 1,671.62 ft, 292 days measured
Lowest to highest that yearYear average2026 so far

One bar per year from the lowest to the highest daily level, with the year's average. Years with no bar have no daily record in the agency archive.

Lowest years

Years ranked by their lowest daily level.

  • 20011,651.32 ft on Aug 10
  • 20151,657.77 ft on Apr 2
  • 20031,657.78 ft on Mar 12
  • 20051,660.95 ft on Mar 29
  • 20211,660.99 ft on Mar 11

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (292 days)1,671.621,661.35Mar 61,679.00Apr 19
20251,671.041,663.14Mar 51,678.36May 21
20241,672.411,665.67Dec 101,679.95Jul 17
20231,671.611,663.30Mar 171,678.72Aug 20
20221,672.091,662.49Feb 161,678.23Apr 26
20211,671.811,660.99Mar 111,677.84May 26
20201,669.681,662.67Mar 101,676.17Jun 21
20191,672.961,663.94Mar 301,679.44May 29
20181,671.811,664.98Oct 101,677.87May 7
20171,673.361,667.21Feb 231,679.72Jul 2
20161,672.181,666.27Oct 201,677.53Jun 14
20151,669.731,657.77Apr 21,679.42Jun 25
20141,672.221,663.49Mar 301,678.75Jun 29
20131,671.281,665.50Mar 121,679.34Jun 13
20121,670.501,665.35Dec 21,678.24May 11
20111,672.181,665.53Mar 51,680.12Apr 29
20101,672.341,664.78Mar 121,677.84Jul 1
20091,672.191,663.96Mar 71,678.88May 31
20081,674.271,669.28Oct 241,679.49Apr 19
20071,673.471,665.46Oct 191,679.74Jan 16
20061,675.901,669.01Oct 161,679.59Jul 3
20051,672.121,660.95Mar 291,679.03Dec 6
20041,673.081,661.05Mar 261,680.01May 27
20031,672.271,657.78Mar 121,679.57May 29
20021,670.101,662.17Jan 241,678.68May 19
20011,662.551,651.32Aug 101,675.16May 2
20001,672.631,665.49Nov 251,679.30May 15
1999 (92 days)1,665.071,661.48Oct 131,668.67Dec 31

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

Monthly averages

MonthAverageLowestHighest
January1,670.231,662.171,679.74
February1,668.031,658.791,678.58
March1,667.381,656.681,676.08
April1,673.211,655.871,680.12
May1,677.001,671.441,680.01
June1,677.051,667.411,679.80
July1,675.731,656.221,679.95
August1,673.151,651.321,678.72
September1,670.291,652.891,677.23
October1,668.391,654.921,674.84
November1,669.511,658.871,679.24
December1,670.251,663.571,679.37

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Daily levels as CSV (9,881 rows; credit the original agencies listed below)