Country: Canada
United StatesCanadaUnited Kingdom

Oak Lake water level history

Daily records since 1954 · Level today: 429.650 m

Highest on record
430.673 m
Apr 17, 1976
Lowest on record
427.835 m
Feb 28, 1990
Today
429.650 m
Oct 23, 2026
Years of data
72
since 1954

In short

Across 10 complete years, 1981 had the lowest average level (429.217 m) and 1976 the highest (429.849 m).

On average the lake is lowest in March (429.304 m) and highest in May (429.620 m).

Oak Lake level, all years

Loading chart…

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

Each year's lowest and highest level

427.7428.5429.3430.0430.81954196319721981199019992008201720261954: lowest 429.18 m (1954-04-24), highest 429.95 m (1954-07-29), average 429.71 m, 194 days measured1955: lowest 429.42 m (1955-11-07), highest 430.24 m (1955-05-19), average 429.86 m, 200 days measured1958: lowest 428.57 m (1958-09-16), highest 428.94 m (1958-07-15), average 428.68 m, 57 days measured1959: lowest 428.45 m (1959-09-19), highest 428.73 m (1959-11-12), average 428.57 m, 60 days measured1960: lowest 428.72 m (1960-10-10), highest 429.19 m (1960-05-10), average 428.84 m, 55 days measured1961: lowest 428.38 m (1961-10-30), highest 428.97 m (1961-05-06), average 428.64 m, 75 days measured1962: lowest 428.31 m (1962-11-15), highest 428.61 m (1962-04-19), average 428.42 m, 85 days measured1963: lowest 428.30 m (1963-01-03), highest 428.53 m (1963-06-29), average 428.42 m, 85 days measured1964: lowest 428.60 m (1964-01-26), highest 429.45 m (1964-06-24), average 429.16 m, 104 days measured1965: lowest 429.24 m (1965-01-09), highest 429.82 m (1965-05-07), average 429.57 m, 186 days measured1966: lowest 429.47 m (1966-10-14), highest 429.93 m (1966-04-16), average 429.67 m, 365 days measured1967: lowest 429.24 m (1967-09-25), highest 429.91 m (1967-04-25), average 429.51 m, 360 days measured1968: lowest 429.26 m (1968-01-22), highest 429.56 m (1968-05-13), average 429.37 m, 324 days measured1969: lowest 429.34 m (1969-01-01), highest 429.89 m (1969-04-22), average 429.60 m, 255 days measured1970: lowest 429.61 m (1970-09-09), highest 430.16 m (1970-05-06), average 429.79 m, 204 days measured1971: lowest 429.51 m (1971-09-30), highest 429.94 m (1971-04-17), average 429.69 m, 330 days measured1972: lowest 429.49 m (1972-10-16), highest 429.92 m (1972-04-10), average 429.61 m, 250 days measured1973: lowest 429.35 m (1973-07-23), highest 429.58 m (1973-05-17), average 429.47 m, 296 days measured1974: lowest 429.48 m (1974-11-13), highest 430.38 m (1974-04-27), average 429.66 m, 342 days measured1975: lowest 429.55 m (1975-01-12), highest 430.32 m (1975-05-05), average 429.78 m, 365 days measured1976: lowest 429.65 m (1976-08-28), highest 430.67 m (1976-04-17), average 429.85 m, 348 days measured1977: lowest 429.49 m (1977-11-17), highest 429.79 m (1977-04-15), average 429.65 m, 365 days measured1978: lowest 429.44 m (1978-11-10), highest 429.82 m (1978-05-01), average 429.60 m, 365 days measured1979: lowest 429.39 m (1979-12-16), highest 429.89 m (1979-06-01), average 429.54 m, 304 days measured1980: lowest 429.22 m (1980-10-10), highest 429.64 m (1980-04-28), average 429.39 m, 366 days measured1981: lowest 429.04 m (1981-10-22), highest 429.45 m (1981-04-06), average 429.22 m, 365 days measured1982: lowest 429.09 m (1982-01-12), highest 430.36 m (1982-03-29), average 429.60 m, 252 days measured1983: lowest 429.37 m (1983-04-07), highest 430.07 m (1983-04-30), average 429.67 m, 226 days measured1984: lowest 429.08 m (1984-10-04), highest 429.63 m (1984-05-17), average 429.34 m, 226 days measured1985: lowest 428.96 m (1985-03-14), highest 429.81 m (1985-05-18), average 429.64 m, 239 days measured1986: lowest 429.54 m (1986-10-30), highest 429.91 m (1986-05-12), average 429.71 m, 262 days measured1987: lowest 429.42 m (1987-11-06), highest 429.96 m (1987-04-12), average 429.63 m, 263 days measured1988: lowest 428.67 m (1988-11-03), highest 429.26 m (1988-05-14), average 429.05 m, 229 days measured1989: lowest 428.29 m (1989-10-26), highest 428.80 m (1989-04-25), average 428.52 m, 245 days measured1990: lowest 427.84 m (1990-02-28), highest 428.57 m (1990-07-13), average 428.36 m, 255 days measured1991: lowest 428.07 m (1991-03-21), highest 428.51 m (1991-07-21), average 428.39 m, 188 days measured1992: lowest 428.42 m (1992-02-26), highest 429.29 m (1992-05-20), average 429.02 m, 249 days measured1993: lowest 428.78 m (1993-10-28), highest 429.04 m (1993-04-23), average 428.91 m, 245 days measured1994: lowest 428.80 m (1994-03-10), highest 429.54 m (1994-05-30), average 429.34 m, 245 days measured1995: lowest 429.27 m (1995-03-05), highest 430.11 m (1995-04-22), average 429.59 m, 245 days measured1996: lowest 429.51 m (1996-10-17), highest 430.20 m (1996-04-22), average 429.69 m, 175 days measured1997: lowest 429.38 m (1997-10-23), highest 429.85 m (1997-04-14), average 429.57 m, 157 days measured1998: lowest 429.39 m (1998-10-02), highest 429.86 m (1998-07-07), average 429.60 m, 139 days measured1999: lowest 429.33 m (1999-01-19), highest 429.99 m (1999-04-07), average 429.74 m, 160 days measured2000: lowest 429.46 m (2000-10-22), highest 429.73 m (2000-07-18), average 429.59 m, 147 days measured2001: lowest 429.45 m (2001-10-31), highest 429.91 m (2001-05-16), average 429.57 m, 99 days measured2002: lowest 429.43 m (2002-10-16), highest 429.70 m (2002-05-01), average 429.56 m, 170 days measured2003: lowest 429.15 m (2003-10-29), highest 429.74 m (2003-05-09), average 429.46 m, 155 days measured2004: lowest 429.27 m (2004-02-20), highest 429.54 m (2004-07-12), average 429.44 m, 144 days measured2005: lowest 429.43 m (2005-10-05), highest 429.86 m (2005-07-08), average 429.66 m, 178 days measured2006: lowest 429.23 m (2006-10-16), highest 429.70 m (2006-05-17), average 429.47 m, 155 days measured2007: lowest 429.27 m (2007-02-20), highest 429.84 m (2007-07-01), average 429.59 m, 142 days measured2008: lowest 429.43 m (2008-10-05), highest 429.81 m (2008-06-19), average 429.58 m, 168 days measured2009: lowest 429.39 m (2009-09-30), highest 429.65 m (2009-06-22), average 429.49 m, 127 days measured2010: lowest 429.41 m (2010-01-14), highest 429.77 m (2010-07-03), average 429.66 m, 183 days measured2011: lowest 429.59 m (2011-02-15), highest 430.44 m (2011-05-17), average 430.19 m, 108 days measured2012: lowest 429.42 m (2012-09-25), highest 429.83 m (2012-07-04), average 429.64 m, 162 days measured2026: lowest 429.65 m (2026-10-11), highest 429.71 m (2026-09-24), average 429.68 m, 30 days measured
427.7428.5429.3430.0430.8195419721990200820261954: lowest 429.18 m (1954-04-24), highest 429.95 m (1954-07-29), average 429.71 m, 194 days measured1955: lowest 429.42 m (1955-11-07), highest 430.24 m (1955-05-19), average 429.86 m, 200 days measured1958: lowest 428.57 m (1958-09-16), highest 428.94 m (1958-07-15), average 428.68 m, 57 days measured1959: lowest 428.45 m (1959-09-19), highest 428.73 m (1959-11-12), average 428.57 m, 60 days measured1960: lowest 428.72 m (1960-10-10), highest 429.19 m (1960-05-10), average 428.84 m, 55 days measured1961: lowest 428.38 m (1961-10-30), highest 428.97 m (1961-05-06), average 428.64 m, 75 days measured1962: lowest 428.31 m (1962-11-15), highest 428.61 m (1962-04-19), average 428.42 m, 85 days measured1963: lowest 428.30 m (1963-01-03), highest 428.53 m (1963-06-29), average 428.42 m, 85 days measured1964: lowest 428.60 m (1964-01-26), highest 429.45 m (1964-06-24), average 429.16 m, 104 days measured1965: lowest 429.24 m (1965-01-09), highest 429.82 m (1965-05-07), average 429.57 m, 186 days measured1966: lowest 429.47 m (1966-10-14), highest 429.93 m (1966-04-16), average 429.67 m, 365 days measured1967: lowest 429.24 m (1967-09-25), highest 429.91 m (1967-04-25), average 429.51 m, 360 days measured1968: lowest 429.26 m (1968-01-22), highest 429.56 m (1968-05-13), average 429.37 m, 324 days measured1969: lowest 429.34 m (1969-01-01), highest 429.89 m (1969-04-22), average 429.60 m, 255 days measured1970: lowest 429.61 m (1970-09-09), highest 430.16 m (1970-05-06), average 429.79 m, 204 days measured1971: lowest 429.51 m (1971-09-30), highest 429.94 m (1971-04-17), average 429.69 m, 330 days measured1972: lowest 429.49 m (1972-10-16), highest 429.92 m (1972-04-10), average 429.61 m, 250 days measured1973: lowest 429.35 m (1973-07-23), highest 429.58 m (1973-05-17), average 429.47 m, 296 days measured1974: lowest 429.48 m (1974-11-13), highest 430.38 m (1974-04-27), average 429.66 m, 342 days measured1975: lowest 429.55 m (1975-01-12), highest 430.32 m (1975-05-05), average 429.78 m, 365 days measured1976: lowest 429.65 m (1976-08-28), highest 430.67 m (1976-04-17), average 429.85 m, 348 days measured1977: lowest 429.49 m (1977-11-17), highest 429.79 m (1977-04-15), average 429.65 m, 365 days measured1978: lowest 429.44 m (1978-11-10), highest 429.82 m (1978-05-01), average 429.60 m, 365 days measured1979: lowest 429.39 m (1979-12-16), highest 429.89 m (1979-06-01), average 429.54 m, 304 days measured1980: lowest 429.22 m (1980-10-10), highest 429.64 m (1980-04-28), average 429.39 m, 366 days measured1981: lowest 429.04 m (1981-10-22), highest 429.45 m (1981-04-06), average 429.22 m, 365 days measured1982: lowest 429.09 m (1982-01-12), highest 430.36 m (1982-03-29), average 429.60 m, 252 days measured1983: lowest 429.37 m (1983-04-07), highest 430.07 m (1983-04-30), average 429.67 m, 226 days measured1984: lowest 429.08 m (1984-10-04), highest 429.63 m (1984-05-17), average 429.34 m, 226 days measured1985: lowest 428.96 m (1985-03-14), highest 429.81 m (1985-05-18), average 429.64 m, 239 days measured1986: lowest 429.54 m (1986-10-30), highest 429.91 m (1986-05-12), average 429.71 m, 262 days measured1987: lowest 429.42 m (1987-11-06), highest 429.96 m (1987-04-12), average 429.63 m, 263 days measured1988: lowest 428.67 m (1988-11-03), highest 429.26 m (1988-05-14), average 429.05 m, 229 days measured1989: lowest 428.29 m (1989-10-26), highest 428.80 m (1989-04-25), average 428.52 m, 245 days measured1990: lowest 427.84 m (1990-02-28), highest 428.57 m (1990-07-13), average 428.36 m, 255 days measured1991: lowest 428.07 m (1991-03-21), highest 428.51 m (1991-07-21), average 428.39 m, 188 days measured1992: lowest 428.42 m (1992-02-26), highest 429.29 m (1992-05-20), average 429.02 m, 249 days measured1993: lowest 428.78 m (1993-10-28), highest 429.04 m (1993-04-23), average 428.91 m, 245 days measured1994: lowest 428.80 m (1994-03-10), highest 429.54 m (1994-05-30), average 429.34 m, 245 days measured1995: lowest 429.27 m (1995-03-05), highest 430.11 m (1995-04-22), average 429.59 m, 245 days measured1996: lowest 429.51 m (1996-10-17), highest 430.20 m (1996-04-22), average 429.69 m, 175 days measured1997: lowest 429.38 m (1997-10-23), highest 429.85 m (1997-04-14), average 429.57 m, 157 days measured1998: lowest 429.39 m (1998-10-02), highest 429.86 m (1998-07-07), average 429.60 m, 139 days measured1999: lowest 429.33 m (1999-01-19), highest 429.99 m (1999-04-07), average 429.74 m, 160 days measured2000: lowest 429.46 m (2000-10-22), highest 429.73 m (2000-07-18), average 429.59 m, 147 days measured2001: lowest 429.45 m (2001-10-31), highest 429.91 m (2001-05-16), average 429.57 m, 99 days measured2002: lowest 429.43 m (2002-10-16), highest 429.70 m (2002-05-01), average 429.56 m, 170 days measured2003: lowest 429.15 m (2003-10-29), highest 429.74 m (2003-05-09), average 429.46 m, 155 days measured2004: lowest 429.27 m (2004-02-20), highest 429.54 m (2004-07-12), average 429.44 m, 144 days measured2005: lowest 429.43 m (2005-10-05), highest 429.86 m (2005-07-08), average 429.66 m, 178 days measured2006: lowest 429.23 m (2006-10-16), highest 429.70 m (2006-05-17), average 429.47 m, 155 days measured2007: lowest 429.27 m (2007-02-20), highest 429.84 m (2007-07-01), average 429.59 m, 142 days measured2008: lowest 429.43 m (2008-10-05), highest 429.81 m (2008-06-19), average 429.58 m, 168 days measured2009: lowest 429.39 m (2009-09-30), highest 429.65 m (2009-06-22), average 429.49 m, 127 days measured2010: lowest 429.41 m (2010-01-14), highest 429.77 m (2010-07-03), average 429.66 m, 183 days measured2011: lowest 429.59 m (2011-02-15), highest 430.44 m (2011-05-17), average 430.19 m, 108 days measured2012: lowest 429.42 m (2012-09-25), highest 429.83 m (2012-07-04), average 429.64 m, 162 days measured2026: lowest 429.65 m (2026-10-11), highest 429.71 m (2026-09-24), average 429.68 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.

  • 1981429.036 m on Oct 22
  • 1980429.224 m on Oct 10
  • 1967429.238 m on Sep 25
  • 1978429.436 m on Nov 10
  • 1966429.469 m on Oct 14

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)429.678429.645Oct 11429.711Sep 24
2012 (162 days)429.638429.418Sep 25429.833Jul 4
2011 (108 days)430.194429.591Feb 15430.442May 17
2010 (183 days)429.658429.407Jan 14429.765Jul 3
2009 (127 days)429.490429.387Sep 30429.647Jun 22
2008 (168 days)429.578429.432Oct 5429.807Jun 19
2007 (142 days)429.588429.267Feb 20429.838Jul 1
2006 (155 days)429.467429.231Oct 16429.703May 17
2005 (178 days)429.657429.426Oct 5429.862Jul 8
2004 (144 days)429.441429.265Feb 20429.542Jul 12
2003 (155 days)429.464429.149Oct 29429.741May 9
2002 (170 days)429.558429.434Oct 16429.695May 1
2001 (99 days)429.570429.449Oct 31429.912May 16
2000 (147 days)429.592429.463Oct 22429.732Jul 18
1999 (160 days)429.740429.332Jan 19429.988Apr 7
1998 (139 days)429.603429.388Oct 2429.863Jul 7
1997 (157 days)429.565429.377Oct 23429.850Apr 14
1996 (175 days)429.691429.505Oct 17430.203Apr 22
1995 (245 days)429.595429.270Mar 5430.114Apr 22
1994 (245 days)429.337428.797Mar 10429.539May 30
1993 (245 days)428.911428.776Oct 28429.043Apr 23
1992 (249 days)429.020428.422Feb 26429.293May 20
1991 (188 days)428.388428.073Mar 21428.512Jul 21
1990 (255 days)428.361427.835Feb 28428.571Jul 13
1989 (245 days)428.521428.285Oct 26428.804Apr 25
1988 (229 days)429.050428.674Nov 3429.261May 14
1987 (263 days)429.628429.415Nov 6429.959Apr 12
1986 (262 days)429.710429.539Oct 30429.906May 12
1985 (239 days)429.644428.961Mar 14429.806May 18
1984 (226 days)429.344429.076Oct 4429.625May 17
1983 (226 days)429.666429.367Apr 7430.065Apr 30
1982 (252 days)429.600429.087Jan 12430.355Mar 29
1981429.217429.036Oct 22429.446Apr 6
1980429.394429.224Oct 10429.644Apr 28
1979 (304 days)429.535429.385Dec 16429.893Jun 1
1978429.595429.436Nov 10429.820May 1
1977429.653429.494Nov 17429.792Apr 15
1976429.849429.649Aug 28430.673Apr 17
1975429.778429.552Jan 12430.320May 5
1974429.659429.481Nov 13430.378Apr 27
1973 (296 days)429.469429.347Jul 23429.576May 17
1972 (250 days)429.608429.488Oct 16429.923Apr 10
1971429.694429.506Sep 30429.936Apr 17
1970 (204 days)429.789429.610Sep 9430.158May 6
1969 (255 days)429.595429.344Jan 1429.887Apr 22
1968 (324 days)429.375429.259Jan 22429.558May 13
1967429.510429.238Sep 25429.908Apr 25
1966429.671429.469Oct 14429.933Apr 16
1965 (186 days)429.566429.241Jan 9429.823May 7
1964 (104 days)429.163428.604Jan 26429.454Jun 24
1963 (85 days)428.425428.302Jan 3428.527Jun 29
1962 (85 days)428.422428.311Nov 15428.607Apr 19
1961 (75 days)428.639428.375Oct 30428.972May 6
1960 (55 days)428.839428.716Oct 10429.192May 10
1959 (60 days)428.575428.454Sep 19428.729Nov 12
1958 (57 days)428.677428.570Sep 16428.936Jul 15
1955 (200 days)429.857429.417Nov 7430.240May 19
1954 (194 days)429.715429.183Apr 24429.948Jul 29

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

Monthly averages

MonthAverageLowestHighest
January429.494428.302429.829
February429.444427.835429.829
March429.304427.840430.355
April429.570428.199430.673
May429.620428.372430.442
June429.564428.333430.359
July429.502428.357430.305
August429.402428.326429.997
September429.342428.297429.936
October429.318428.238429.923
November429.450428.311429.869
December429.494428.342429.832

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Daily levels as CSV (12,273 rows; credit the original agencies listed below)