Country: Canada
United StatesCanadaUnited Kingdom

Lake Wahtopanah water level history

Daily records since 1960 · Level today: 467.933 m

Highest on record
470.975 m
Jul 1, 2020
Lowest on record
456.231 m
Mar 16, 1966
Today
467.933 m
Oct 23, 2026
Years of data
66
since 1960

In short

Across 54 complete years, 1991 had the lowest average level (466.883 m) and 2014 the highest (468.346 m).

On average the lake is lowest in March (466.936 m) and highest in May (468.511 m).

Lake Wahtopanah level, all years

Loading chart…

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

Each year's lowest and highest level

4554594644684721960196819761984199220002008201620261960: lowest 460.86 m (1960-12-31), highest 461.30 m (1960-11-16), average 461.09 m, 32 days measured1961: lowest 459.51 m (1961-03-13), highest 465.89 m (1961-06-26), average 463.92 m, 324 days measured1962: lowest 461.95 m (1962-03-31), highest 468.27 m (1962-07-10), average 466.05 m, 238 days measured1963: lowest 466.42 m (1963-02-18), highest 468.93 m (1963-06-11), average 468.01 m, 247 days measured1964: lowest 465.62 m (1964-04-15), highest 468.63 m (1964-05-11), average 468.04 m, 240 days measured1965: lowest 463.81 m (1965-04-09), highest 468.66 m (1965-05-12), average 467.59 m, 308 days measured1966: lowest 456.23 m (1966-03-16), highest 468.66 m (1966-05-13), average 467.13 m, 284 days measured1967: lowest 466.25 m (1967-04-07), highest 468.91 m (1967-04-19), average 467.91 m, 273 days measured1968: lowest 463.78 m (1968-03-22), highest 468.42 m (1968-08-16), average 467.57 m, 355 days measured1969: lowest 463.16 m (1969-04-06), highest 468.94 m (1969-04-14), average 467.37 m, 342 days measured1970: lowest 462.90 m (1970-04-07), highest 469.39 m (1970-05-15), average 467.39 m, 364 days measured1971: lowest 463.70 m (1971-04-03), highest 468.90 m (1971-06-16), average 467.56 m, 362 days measured1972: lowest 467.02 m (1972-03-16), highest 468.97 m (1972-04-18), average 468.03 m, 343 days measured1973: lowest 467.25 m (1973-03-09), highest 468.42 m (1973-10-13), average 467.97 m, 365 days measured1974: lowest 467.09 m (1974-12-31), highest 469.19 m (1974-04-22), average 467.89 m, 355 days measured1975: lowest 466.20 m (1975-04-11), highest 469.08 m (1975-09-30), average 467.94 m, 365 days measured1976: lowest 467.32 m (1976-12-31), highest 469.27 m (1976-04-22), average 468.23 m, 359 days measured1977: lowest 466.69 m (1977-02-23), highest 468.46 m (1977-07-23), average 467.89 m, 365 days measured1978: lowest 466.87 m (1978-03-27), highest 468.60 m (1978-05-08), average 467.82 m, 365 days measured1979: lowest 467.26 m (1979-04-11), highest 469.39 m (1979-04-24), average 467.92 m, 365 days measured1980: lowest 466.63 m (1980-03-29), highest 468.40 m (1980-05-01), average 467.69 m, 366 days measured1981: lowest 467.28 m (1981-03-11), highest 468.37 m (1981-04-13), average 467.96 m, 365 days measured1982: lowest 465.29 m (1982-03-29), highest 468.72 m (1982-04-24), average 467.61 m, 365 days measured1983: lowest 466.62 m (1983-12-31), highest 469.05 m (1983-04-24), average 467.79 m, 365 days measured1984: lowest 465.86 m (1984-02-21), highest 468.45 m (1984-05-23), average 467.35 m, 366 days measured1985: lowest 466.92 m (1985-03-24), highest 468.57 m (1985-04-25), average 467.90 m, 365 days measured1986: lowest 467.12 m (1986-03-19), highest 469.06 m (1986-05-16), average 468.03 m, 365 days measured1987: lowest 467.62 m (1987-12-31), highest 469.18 m (1987-04-10), average 468.16 m, 365 days measured1988: lowest 466.75 m (1988-03-22), highest 468.68 m (1988-05-16), average 467.82 m, 366 days measured1989: lowest 467.29 m (1989-12-31), highest 468.44 m (1989-06-24), average 467.96 m, 365 days measured1990: lowest 464.62 m (1990-12-31), highest 468.78 m (1990-05-02), average 467.32 m, 365 days measured1991: lowest 462.89 m (1991-03-22), highest 468.52 m (1991-05-22), average 466.88 m, 350 days measured1992: lowest 467.68 m (1992-12-31), highest 468.81 m (1992-04-20), average 468.22 m, 292 days measured1993: lowest 466.86 m (1993-03-23), highest 468.64 m (1993-07-14), average 467.87 m, 365 days measured1994: lowest 466.65 m (1994-03-13), highest 468.66 m (1994-08-07), average 467.92 m, 365 days measured1995: lowest 465.64 m (1995-12-31), highest 469.49 m (1995-04-24), average 467.82 m, 347 days measured1996: lowest 465.67 m (1996-01-01), highest 468.69 m (1996-05-23), average 467.62 m, 315 days measured1997: lowest 466.17 m (1997-03-18), highest 468.77 m (1997-04-21), average 467.59 m, 365 days measured1998: lowest 467.16 m (1998-12-31), highest 468.58 m (1998-07-08), average 467.91 m, 365 days measured1999: lowest 466.46 m (1999-03-06), highest 468.86 m (1999-05-24), average 467.90 m, 365 days measured2000: lowest 467.78 m (2000-02-25), highest 468.71 m (2000-07-23), average 468.21 m, 366 days measured2001: lowest 467.50 m (2001-04-06), highest 469.31 m (2001-05-06), average 468.27 m, 318 days measured2002: lowest 467.66 m (2002-04-08), highest 468.58 m (2002-04-21), average 468.10 m, 365 days measured2003: lowest 467.82 m (2003-01-01), highest 468.59 m (2003-04-15), average 468.09 m, 365 days measured2004: lowest 467.23 m (2004-11-13), highest 468.81 m (2004-06-08), average 468.10 m, 366 days measured2005: lowest 467.69 m (2005-01-01), highest 469.33 m (2005-04-07), average 468.28 m, 349 days measured2006: lowest 467.74 m (2006-03-30), highest 468.89 m (2006-04-13), average 468.17 m, 346 days measured2007: lowest 467.67 m (2007-03-14), highest 469.02 m (2007-04-01), average 468.23 m, 365 days measured2008: lowest 467.54 m (2008-03-23), highest 468.73 m (2008-04-20), average 468.17 m, 366 days measured2009: lowest 467.72 m (2009-03-21), highest 469.36 m (2009-04-15), average 468.28 m, 365 days measured2010: lowest 467.69 m (2010-03-06), highest 468.97 m (2010-06-19), average 468.28 m, 365 days measured2011: lowest 467.25 m (2011-02-28), highest 469.68 m (2011-06-09), average 468.27 m, 365 days measured2012: lowest 467.60 m (2012-10-24), highest 468.56 m (2012-07-04), average 468.06 m, 366 days measured2013: lowest 467.58 m (2013-02-16), highest 468.80 m (2013-07-04), average 468.15 m, 365 days measured2014: lowest 467.47 m (2014-04-07), highest 469.49 m (2014-07-05), average 468.35 m, 365 days measured2015: lowest 467.54 m (2015-11-29), highest 468.78 m (2015-04-09), average 468.24 m, 365 days measured2016: lowest 467.67 m (2016-12-10), highest 468.80 m (2016-10-18), average 468.32 m, 366 days measured2017: lowest 467.55 m (2017-03-17), highest 469.18 m (2017-04-07), average 468.17 m, 365 days measured2018: lowest 467.51 m (2018-10-04), highest 468.99 m (2018-04-25), average 468.12 m, 239 days measured2019: lowest 467.39 m (2019-09-19), highest 468.54 m (2019-04-12), average 467.95 m, 365 days measured2020: lowest 466.86 m (2020-09-28), highest 470.98 m (2020-07-01), average 468.05 m, 366 days measured2021: lowest 467.24 m (2021-03-08), highest 468.59 m (2021-06-15), average 467.99 m, 365 days measured2022: lowest 467.41 m (2022-03-23), highest 469.91 m (2022-05-18), average 468.32 m, 341 days measured2023: lowest 467.69 m (2023-10-13), highest 468.71 m (2023-04-16), average 468.09 m, 365 days measured2024: lowest 467.24 m (2024-10-30), highest 469.00 m (2024-04-10), average 468.16 m, 366 days measured2025: lowest 467.21 m (2025-03-19), highest 468.69 m (2025-04-22), average 468.02 m, 365 days measured2026: lowest 467.77 m (2026-10-13), highest 468.47 m (2026-09-22), average 468.11 m, 30 days measured
455459464468472196019771994201120261960: lowest 460.86 m (1960-12-31), highest 461.30 m (1960-11-16), average 461.09 m, 32 days measured1961: lowest 459.51 m (1961-03-13), highest 465.89 m (1961-06-26), average 463.92 m, 324 days measured1962: lowest 461.95 m (1962-03-31), highest 468.27 m (1962-07-10), average 466.05 m, 238 days measured1963: lowest 466.42 m (1963-02-18), highest 468.93 m (1963-06-11), average 468.01 m, 247 days measured1964: lowest 465.62 m (1964-04-15), highest 468.63 m (1964-05-11), average 468.04 m, 240 days measured1965: lowest 463.81 m (1965-04-09), highest 468.66 m (1965-05-12), average 467.59 m, 308 days measured1966: lowest 456.23 m (1966-03-16), highest 468.66 m (1966-05-13), average 467.13 m, 284 days measured1967: lowest 466.25 m (1967-04-07), highest 468.91 m (1967-04-19), average 467.91 m, 273 days measured1968: lowest 463.78 m (1968-03-22), highest 468.42 m (1968-08-16), average 467.57 m, 355 days measured1969: lowest 463.16 m (1969-04-06), highest 468.94 m (1969-04-14), average 467.37 m, 342 days measured1970: lowest 462.90 m (1970-04-07), highest 469.39 m (1970-05-15), average 467.39 m, 364 days measured1971: lowest 463.70 m (1971-04-03), highest 468.90 m (1971-06-16), average 467.56 m, 362 days measured1972: lowest 467.02 m (1972-03-16), highest 468.97 m (1972-04-18), average 468.03 m, 343 days measured1973: lowest 467.25 m (1973-03-09), highest 468.42 m (1973-10-13), average 467.97 m, 365 days measured1974: lowest 467.09 m (1974-12-31), highest 469.19 m (1974-04-22), average 467.89 m, 355 days measured1975: lowest 466.20 m (1975-04-11), highest 469.08 m (1975-09-30), average 467.94 m, 365 days measured1976: lowest 467.32 m (1976-12-31), highest 469.27 m (1976-04-22), average 468.23 m, 359 days measured1977: lowest 466.69 m (1977-02-23), highest 468.46 m (1977-07-23), average 467.89 m, 365 days measured1978: lowest 466.87 m (1978-03-27), highest 468.60 m (1978-05-08), average 467.82 m, 365 days measured1979: lowest 467.26 m (1979-04-11), highest 469.39 m (1979-04-24), average 467.92 m, 365 days measured1980: lowest 466.63 m (1980-03-29), highest 468.40 m (1980-05-01), average 467.69 m, 366 days measured1981: lowest 467.28 m (1981-03-11), highest 468.37 m (1981-04-13), average 467.96 m, 365 days measured1982: lowest 465.29 m (1982-03-29), highest 468.72 m (1982-04-24), average 467.61 m, 365 days measured1983: lowest 466.62 m (1983-12-31), highest 469.05 m (1983-04-24), average 467.79 m, 365 days measured1984: lowest 465.86 m (1984-02-21), highest 468.45 m (1984-05-23), average 467.35 m, 366 days measured1985: lowest 466.92 m (1985-03-24), highest 468.57 m (1985-04-25), average 467.90 m, 365 days measured1986: lowest 467.12 m (1986-03-19), highest 469.06 m (1986-05-16), average 468.03 m, 365 days measured1987: lowest 467.62 m (1987-12-31), highest 469.18 m (1987-04-10), average 468.16 m, 365 days measured1988: lowest 466.75 m (1988-03-22), highest 468.68 m (1988-05-16), average 467.82 m, 366 days measured1989: lowest 467.29 m (1989-12-31), highest 468.44 m (1989-06-24), average 467.96 m, 365 days measured1990: lowest 464.62 m (1990-12-31), highest 468.78 m (1990-05-02), average 467.32 m, 365 days measured1991: lowest 462.89 m (1991-03-22), highest 468.52 m (1991-05-22), average 466.88 m, 350 days measured1992: lowest 467.68 m (1992-12-31), highest 468.81 m (1992-04-20), average 468.22 m, 292 days measured1993: lowest 466.86 m (1993-03-23), highest 468.64 m (1993-07-14), average 467.87 m, 365 days measured1994: lowest 466.65 m (1994-03-13), highest 468.66 m (1994-08-07), average 467.92 m, 365 days measured1995: lowest 465.64 m (1995-12-31), highest 469.49 m (1995-04-24), average 467.82 m, 347 days measured1996: lowest 465.67 m (1996-01-01), highest 468.69 m (1996-05-23), average 467.62 m, 315 days measured1997: lowest 466.17 m (1997-03-18), highest 468.77 m (1997-04-21), average 467.59 m, 365 days measured1998: lowest 467.16 m (1998-12-31), highest 468.58 m (1998-07-08), average 467.91 m, 365 days measured1999: lowest 466.46 m (1999-03-06), highest 468.86 m (1999-05-24), average 467.90 m, 365 days measured2000: lowest 467.78 m (2000-02-25), highest 468.71 m (2000-07-23), average 468.21 m, 366 days measured2001: lowest 467.50 m (2001-04-06), highest 469.31 m (2001-05-06), average 468.27 m, 318 days measured2002: lowest 467.66 m (2002-04-08), highest 468.58 m (2002-04-21), average 468.10 m, 365 days measured2003: lowest 467.82 m (2003-01-01), highest 468.59 m (2003-04-15), average 468.09 m, 365 days measured2004: lowest 467.23 m (2004-11-13), highest 468.81 m (2004-06-08), average 468.10 m, 366 days measured2005: lowest 467.69 m (2005-01-01), highest 469.33 m (2005-04-07), average 468.28 m, 349 days measured2006: lowest 467.74 m (2006-03-30), highest 468.89 m (2006-04-13), average 468.17 m, 346 days measured2007: lowest 467.67 m (2007-03-14), highest 469.02 m (2007-04-01), average 468.23 m, 365 days measured2008: lowest 467.54 m (2008-03-23), highest 468.73 m (2008-04-20), average 468.17 m, 366 days measured2009: lowest 467.72 m (2009-03-21), highest 469.36 m (2009-04-15), average 468.28 m, 365 days measured2010: lowest 467.69 m (2010-03-06), highest 468.97 m (2010-06-19), average 468.28 m, 365 days measured2011: lowest 467.25 m (2011-02-28), highest 469.68 m (2011-06-09), average 468.27 m, 365 days measured2012: lowest 467.60 m (2012-10-24), highest 468.56 m (2012-07-04), average 468.06 m, 366 days measured2013: lowest 467.58 m (2013-02-16), highest 468.80 m (2013-07-04), average 468.15 m, 365 days measured2014: lowest 467.47 m (2014-04-07), highest 469.49 m (2014-07-05), average 468.35 m, 365 days measured2015: lowest 467.54 m (2015-11-29), highest 468.78 m (2015-04-09), average 468.24 m, 365 days measured2016: lowest 467.67 m (2016-12-10), highest 468.80 m (2016-10-18), average 468.32 m, 366 days measured2017: lowest 467.55 m (2017-03-17), highest 469.18 m (2017-04-07), average 468.17 m, 365 days measured2018: lowest 467.51 m (2018-10-04), highest 468.99 m (2018-04-25), average 468.12 m, 239 days measured2019: lowest 467.39 m (2019-09-19), highest 468.54 m (2019-04-12), average 467.95 m, 365 days measured2020: lowest 466.86 m (2020-09-28), highest 470.98 m (2020-07-01), average 468.05 m, 366 days measured2021: lowest 467.24 m (2021-03-08), highest 468.59 m (2021-06-15), average 467.99 m, 365 days measured2022: lowest 467.41 m (2022-03-23), highest 469.91 m (2022-05-18), average 468.32 m, 341 days measured2023: lowest 467.69 m (2023-10-13), highest 468.71 m (2023-04-16), average 468.09 m, 365 days measured2024: lowest 467.24 m (2024-10-30), highest 469.00 m (2024-04-10), average 468.16 m, 366 days measured2025: lowest 467.21 m (2025-03-19), highest 468.69 m (2025-04-22), average 468.02 m, 365 days measured2026: lowest 467.77 m (2026-10-13), highest 468.47 m (2026-09-22), average 468.11 m, 30 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.

  • 1991462.886 m on Mar 22
  • 1970462.900 m on Apr 7
  • 1969463.162 m on Apr 6
  • 1971463.704 m on Apr 3
  • 1968463.778 m on Mar 22

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)468.113467.767Oct 13468.473Sep 22
2025468.020467.209Mar 19468.687Apr 22
2024468.161467.239Oct 30468.997Apr 10
2023468.087467.689Oct 13468.705Apr 16
2022468.324467.409Mar 23469.907May 18
2021467.993467.236Mar 8468.588Jun 15
2020468.049466.856Sep 28470.975Jul 1
2019467.949467.393Sep 19468.541Apr 12
2018 (239 days)468.116467.512Oct 4468.986Apr 25
2017468.175467.548Mar 17469.184Apr 7
2016468.319467.670Dec 10468.799Oct 18
2015468.239467.540Nov 29468.778Apr 9
2014468.346467.469Apr 7469.488Jul 5
2013468.150467.578Feb 16468.804Jul 4
2012468.065467.604Oct 24468.560Jul 4
2011468.267467.254Feb 28469.683Jun 9
2010468.280467.687Mar 6468.966Jun 19
2009468.281467.720Mar 21469.364Apr 15
2008468.169467.539Mar 23468.726Apr 20
2007468.226467.665Mar 14469.021Apr 1
2006468.169467.741Mar 30468.891Apr 13
2005468.277467.689Jan 1469.325Apr 7
2004468.097467.228Nov 13468.807Jun 8
2003468.087467.822Jan 1468.587Apr 15
2002468.099467.656Apr 8468.583Apr 21
2001 (318 days)468.273467.499Apr 6469.313May 6
2000468.213467.783Feb 25468.711Jul 23
1999467.902466.455Mar 6468.855May 24
1998467.915467.155Dec 31468.579Jul 8
1997467.586466.168Mar 18468.774Apr 21
1996 (315 days)467.624465.671Jan 1468.690May 23
1995467.819465.636Dec 31469.485Apr 24
1994467.923466.653Mar 13468.657Aug 7
1993467.868466.863Mar 23468.637Jul 14
1992 (292 days)468.215467.681Dec 31468.811Apr 20
1991466.883462.886Mar 22468.523May 22
1990467.323464.618Dec 31468.777May 2
1989467.959467.286Dec 31468.441Jun 24
1988467.819466.750Mar 22468.684May 16
1987468.156467.617Dec 31469.176Apr 10
1986468.029467.115Mar 19469.059May 16
1985467.903466.916Mar 24468.567Apr 25
1984467.350465.861Feb 21468.445May 23
1983467.791466.619Dec 31469.052Apr 24
1982467.610465.288Mar 29468.724Apr 24
1981467.964467.277Mar 11468.374Apr 13
1980467.686466.630Mar 29468.399May 1
1979467.923467.263Apr 11469.392Apr 24
1978467.819466.865Mar 27468.596May 8
1977467.894466.688Feb 23468.456Jul 23
1976468.230467.316Dec 31469.270Apr 22
1975467.936466.204Apr 11469.078Sep 30
1974467.887467.085Dec 31469.191Apr 22
1973467.973467.249Mar 9468.423Oct 13
1972468.031467.021Mar 16468.965Apr 18
1971467.561463.704Apr 3468.904Jun 16
1970467.386462.900Apr 7469.392May 15
1969467.374463.162Apr 6468.944Apr 14
1968467.568463.778Mar 22468.417Aug 16
1967 (273 days)467.907466.250Apr 7468.907Apr 19
1966 (284 days)467.126456.231Mar 16468.660May 13
1965 (308 days)467.587463.811Apr 9468.660May 12
1964 (240 days)468.038465.622Apr 15468.633May 11
1963 (247 days)468.011466.423Feb 18468.932Jun 11
1962 (238 days)466.048461.946Mar 31468.273Jul 10
1961 (324 days)463.917459.510Mar 13465.893Jun 26
1960 (32 days)461.087460.858Dec 31461.300Nov 16

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

Monthly averages

MonthAverageLowestHighest
January467.380460.669468.356
February467.028459.776468.394
March466.936456.231469.009
April467.812457.429469.485
May468.511463.003469.907
June468.434465.680470.520
July468.350465.612470.975
August468.189465.067468.657
September468.070464.802469.078
October467.922464.719469.066
November467.823461.300468.726
December467.563460.858468.368

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Daily levels as CSV (22,693 rows; credit the original agencies listed below)