Country: USA
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Alisal Reservoir water level history

Daily records since 1988 · Level today: 596.78 ft

Highest on record
604.36 ft
Mar 4, 2001
Lowest on record
579.72 ft
Nov 18, 2016
Today
596.78 ft
Oct 23, 2026
Years of data
38
since 1988

In short

Across 36 complete years, 2016 had the lowest average level (581.53 ft) and 1998 the highest (599.65 ft).

On average the lake is lowest in November (594.19 ft) and highest in April (598.10 ft).

Alisal Reservoir level, all years

Loading chart…

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

Each year's lowest and highest level

5785855925996061988199319982003200820132018202320261988: lowest 595.86 ft (1988-12-14), highest 596.79 ft (1988-10-01), average 596.28 ft, 92 days measured1989: lowest 590.38 ft (1989-12-30), highest 596.19 ft (1989-02-09), average 593.80 ft, 365 days measured1990: lowest 584.54 ft (1990-12-30), highest 591.64 ft (1990-03-11), average 588.39 ft, 365 days measured1991: lowest 584.42 ft (1991-02-25), highest 600.77 ft (1991-03-26), average 595.14 ft, 365 days measured1992: lowest 595.61 ft (1992-12-02), highest 600.68 ft (1992-02-12), average 598.42 ft, 366 days measured1993: lowest 597.30 ft (1993-12-10), highest 601.64 ft (1993-03-25), average 599.15 ft, 365 days measured1994: lowest 595.58 ft (1994-12-21), highest 600.64 ft (1994-02-19), average 598.00 ft, 365 days measured1995: lowest 595.61 ft (1995-01-01), highest 602.75 ft (1995-03-10), average 598.99 ft, 365 days measured1996: lowest 594.70 ft (1996-10-28), highest 600.59 ft (1996-02-20), average 597.81 ft, 366 days measured1997: lowest 593.70 ft (1997-11-08), highest 600.73 ft (1997-01-25), average 597.63 ft, 365 days measured1998: lowest 598.40 ft (1998-11-24), highest 602.18 ft (1998-02-07), average 599.65 ft, 365 days measured1999: lowest 595.55 ft (1999-12-27), highest 600.47 ft (1999-03-25), average 598.38 ft, 365 days measured2000: lowest 595.43 ft (2000-01-21), highest 600.75 ft (2000-02-23), average 597.85 ft, 366 days measured2001: lowest 595.45 ft (2001-01-07), highest 604.36 ft (2001-03-04), average 598.39 ft, 317 days measured2002: lowest 591.41 ft (2002-12-12), highest 598.02 ft (2002-02-22), average 595.15 ft, 365 days measured2003: lowest 595.76 ft (2003-12-22), highest 600.71 ft (2003-03-15), average 598.07 ft, 365 days measured2004: lowest 594.29 ft (2004-10-15), highest 601.59 ft (2004-12-30), average 597.31 ft, 366 days measured2005: lowest 596.54 ft (2005-12-22), highest 603.70 ft (2005-01-08), average 598.87 ft, 365 days measured2006: lowest 596.46 ft (2006-12-08), highest 601.27 ft (2006-04-03), average 598.82 ft, 365 days measured2007: lowest 590.30 ft (2007-12-14), highest 597.23 ft (2007-03-20), average 594.32 ft, 365 days measured2008: lowest 590.68 ft (2008-01-03), highest 601.14 ft (2008-01-23), average 598.06 ft, 366 days measured2009: lowest 594.26 ft (2009-10-12), highest 598.88 ft (2009-04-07), average 596.65 ft, 365 days measured2010: lowest 596.18 ft (2010-01-01), highest 600.76 ft (2010-01-21), average 598.51 ft, 361 days measured2011: lowest 597.16 ft (2011-11-10), highest 601.98 ft (2011-03-20), average 599.08 ft, 365 days measured2012: lowest 592.64 ft (2012-11-15), highest 598.68 ft (2012-04-27), average 595.86 ft, 365 days measured2013: lowest 587.56 ft (2013-12-29), highest 593.81 ft (2013-03-20), average 590.86 ft, 360 days measured2014: lowest 584.43 ft (2014-11-30), highest 588.59 ft (2014-03-17), average 586.60 ft, 365 days measured2015: lowest 581.21 ft (2015-12-15), highest 585.48 ft (2015-02-12), average 583.56 ft, 357 days measured2016: lowest 579.72 ft (2016-11-18), highest 583.47 ft (2016-03-24), average 581.53 ft, 365 days measured2017: lowest 579.99 ft (2017-01-02), highest 601.42 ft (2017-02-17), average 596.95 ft, 365 days measured2018: lowest 595.70 ft (2018-11-20), highest 599.59 ft (2018-04-05), average 597.35 ft, 365 days measured2019: lowest 595.84 ft (2019-01-02), highest 600.84 ft (2019-02-02), average 598.86 ft, 365 days measured2020: lowest 596.66 ft (2020-12-25), highest 602.38 ft (2020-04-05), average 598.73 ft, 365 days measured2021: lowest 595.81 ft (2021-12-12), highest 600.96 ft (2021-01-28), average 598.16 ft, 364 days measured2022: lowest 595.95 ft (2022-11-29), highest 600.70 ft (2022-12-31), average 598.45 ft, 365 days measured2023: lowest 597.73 ft (2023-12-17), highest 603.80 ft (2023-01-09), average 599.42 ft, 353 days measured2024: lowest 595.22 ft (2024-12-20), highest 601.68 ft (2024-02-04), average 598.77 ft, 366 days measured2025: lowest 595.17 ft (2025-01-25), highest 601.83 ft (2025-12-25), average 598.29 ft, 365 days measured2026: lowest 597.13 ft (2026-10-20), highest 601.27 ft (2026-01-03), average 599.33 ft, 294 days measured
578585592599606198819982008201820261988: lowest 595.86 ft (1988-12-14), highest 596.79 ft (1988-10-01), average 596.28 ft, 92 days measured1989: lowest 590.38 ft (1989-12-30), highest 596.19 ft (1989-02-09), average 593.80 ft, 365 days measured1990: lowest 584.54 ft (1990-12-30), highest 591.64 ft (1990-03-11), average 588.39 ft, 365 days measured1991: lowest 584.42 ft (1991-02-25), highest 600.77 ft (1991-03-26), average 595.14 ft, 365 days measured1992: lowest 595.61 ft (1992-12-02), highest 600.68 ft (1992-02-12), average 598.42 ft, 366 days measured1993: lowest 597.30 ft (1993-12-10), highest 601.64 ft (1993-03-25), average 599.15 ft, 365 days measured1994: lowest 595.58 ft (1994-12-21), highest 600.64 ft (1994-02-19), average 598.00 ft, 365 days measured1995: lowest 595.61 ft (1995-01-01), highest 602.75 ft (1995-03-10), average 598.99 ft, 365 days measured1996: lowest 594.70 ft (1996-10-28), highest 600.59 ft (1996-02-20), average 597.81 ft, 366 days measured1997: lowest 593.70 ft (1997-11-08), highest 600.73 ft (1997-01-25), average 597.63 ft, 365 days measured1998: lowest 598.40 ft (1998-11-24), highest 602.18 ft (1998-02-07), average 599.65 ft, 365 days measured1999: lowest 595.55 ft (1999-12-27), highest 600.47 ft (1999-03-25), average 598.38 ft, 365 days measured2000: lowest 595.43 ft (2000-01-21), highest 600.75 ft (2000-02-23), average 597.85 ft, 366 days measured2001: lowest 595.45 ft (2001-01-07), highest 604.36 ft (2001-03-04), average 598.39 ft, 317 days measured2002: lowest 591.41 ft (2002-12-12), highest 598.02 ft (2002-02-22), average 595.15 ft, 365 days measured2003: lowest 595.76 ft (2003-12-22), highest 600.71 ft (2003-03-15), average 598.07 ft, 365 days measured2004: lowest 594.29 ft (2004-10-15), highest 601.59 ft (2004-12-30), average 597.31 ft, 366 days measured2005: lowest 596.54 ft (2005-12-22), highest 603.70 ft (2005-01-08), average 598.87 ft, 365 days measured2006: lowest 596.46 ft (2006-12-08), highest 601.27 ft (2006-04-03), average 598.82 ft, 365 days measured2007: lowest 590.30 ft (2007-12-14), highest 597.23 ft (2007-03-20), average 594.32 ft, 365 days measured2008: lowest 590.68 ft (2008-01-03), highest 601.14 ft (2008-01-23), average 598.06 ft, 366 days measured2009: lowest 594.26 ft (2009-10-12), highest 598.88 ft (2009-04-07), average 596.65 ft, 365 days measured2010: lowest 596.18 ft (2010-01-01), highest 600.76 ft (2010-01-21), average 598.51 ft, 361 days measured2011: lowest 597.16 ft (2011-11-10), highest 601.98 ft (2011-03-20), average 599.08 ft, 365 days measured2012: lowest 592.64 ft (2012-11-15), highest 598.68 ft (2012-04-27), average 595.86 ft, 365 days measured2013: lowest 587.56 ft (2013-12-29), highest 593.81 ft (2013-03-20), average 590.86 ft, 360 days measured2014: lowest 584.43 ft (2014-11-30), highest 588.59 ft (2014-03-17), average 586.60 ft, 365 days measured2015: lowest 581.21 ft (2015-12-15), highest 585.48 ft (2015-02-12), average 583.56 ft, 357 days measured2016: lowest 579.72 ft (2016-11-18), highest 583.47 ft (2016-03-24), average 581.53 ft, 365 days measured2017: lowest 579.99 ft (2017-01-02), highest 601.42 ft (2017-02-17), average 596.95 ft, 365 days measured2018: lowest 595.70 ft (2018-11-20), highest 599.59 ft (2018-04-05), average 597.35 ft, 365 days measured2019: lowest 595.84 ft (2019-01-02), highest 600.84 ft (2019-02-02), average 598.86 ft, 365 days measured2020: lowest 596.66 ft (2020-12-25), highest 602.38 ft (2020-04-05), average 598.73 ft, 365 days measured2021: lowest 595.81 ft (2021-12-12), highest 600.96 ft (2021-01-28), average 598.16 ft, 364 days measured2022: lowest 595.95 ft (2022-11-29), highest 600.70 ft (2022-12-31), average 598.45 ft, 365 days measured2023: lowest 597.73 ft (2023-12-17), highest 603.80 ft (2023-01-09), average 599.42 ft, 353 days measured2024: lowest 595.22 ft (2024-12-20), highest 601.68 ft (2024-02-04), average 598.77 ft, 366 days measured2025: lowest 595.17 ft (2025-01-25), highest 601.83 ft (2025-12-25), average 598.29 ft, 365 days measured2026: lowest 597.13 ft (2026-10-20), highest 601.27 ft (2026-01-03), average 599.33 ft, 294 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.

  • 2016579.72 ft on Nov 18
  • 2017579.99 ft on Jan 2
  • 2015581.21 ft on Dec 15
  • 1991584.42 ft on Feb 25
  • 2014584.43 ft on Nov 30

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (294 days)599.33597.13Oct 20601.27Jan 3
2025598.29595.17Jan 25601.83Dec 25
2024598.77595.22Dec 20601.68Feb 4
2023599.42597.73Dec 17603.80Jan 9
2022598.45595.95Nov 29600.70Dec 31
2021598.16595.81Dec 12600.96Jan 28
2020598.73596.66Dec 25602.38Apr 5
2019598.86595.84Jan 2600.84Feb 2
2018597.35595.70Nov 20599.59Apr 5
2017596.95579.99Jan 2601.42Feb 17
2016581.53579.72Nov 18583.47Mar 24
2015583.56581.21Dec 15585.48Feb 12
2014586.60584.43Nov 30588.59Mar 17
2013590.86587.56Dec 29593.81Mar 20
2012595.86592.64Nov 15598.68Apr 27
2011599.08597.16Nov 10601.98Mar 20
2010598.51596.18Jan 1600.76Jan 21
2009596.65594.26Oct 12598.88Apr 7
2008598.06590.68Jan 3601.14Jan 23
2007594.32590.30Dec 14597.23Mar 20
2006598.82596.46Dec 8601.27Apr 3
2005598.87596.54Dec 22603.70Jan 8
2004597.31594.29Oct 15601.59Dec 30
2003598.07595.76Dec 22600.71Mar 15
2002595.15591.41Dec 12598.02Feb 22
2001 (317 days)598.39595.45Jan 7604.36Mar 4
2000597.85595.43Jan 21600.75Feb 23
1999598.38595.55Dec 27600.47Mar 25
1998599.65598.40Nov 24602.18Feb 7
1997597.63593.70Nov 8600.73Jan 25
1996597.81594.70Oct 28600.59Feb 20
1995598.99595.61Jan 1602.75Mar 10
1994598.00595.58Dec 21600.64Feb 19
1993599.15597.30Dec 10601.64Mar 25
1992598.42595.61Dec 2600.68Feb 12
1991595.14584.42Feb 25600.77Mar 26
1990588.39584.54Dec 30591.64Mar 11
1989593.80590.38Dec 30596.19Feb 9
1988 (92 days)596.28595.86Dec 14596.79Oct 1

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

Monthly averages

MonthAverageLowestHighest
January596.07579.99603.80
February597.08581.73602.18
March597.88581.72604.36
April598.10583.14602.38
May597.84582.73600.43
June597.40582.15600.09
July596.74581.48600.00
August595.88580.88599.85
September595.08580.30599.37
October594.52579.90598.98
November594.19579.72600.35
December594.62579.77601.83

Download

Daily levels as CSV (13,819 rows; credit the original agencies listed below)