Country: Canada
United StatesCanadaUnited Kingdom

Cormorant Lake water level history

Daily records since 1954 · Level today: 256.248 m

Highest on record
257.526 m
Aug 9, 2014
Lowest on record
255.404 m
Oct 20, 1961
Today
256.248 m
Oct 23, 2026
Years of data
72
since 1954

In short

Across 31 complete years, 1992 had the lowest average level (255.639 m) and 2014 the highest (257.207 m).

On average the lake is lowest in April (256.258 m) and highest in July (256.503 m).

Cormorant Lake level, all years

Loading chart…

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

Each year's lowest and highest level

255.3255.9256.5257.1257.71954196319721981199019992008201720261954: lowest 256.21 m (1954-11-15), highest 256.40 m (1954-09-09), average 256.35 m, 35 days measured1955: lowest 256.20 m (1955-11-25), highest 256.68 m (1955-07-22), average 256.40 m, 98 days measured1956: lowest 255.93 m (1956-12-31), highest 256.41 m (1956-07-16), average 256.20 m, 83 days measured1957: lowest 255.58 m (1957-12-06), highest 255.93 m (1957-01-04), average 255.77 m, 97 days measured1958: lowest 255.54 m (1958-09-29), highest 255.82 m (1958-05-29), average 255.65 m, 102 days measured1959: lowest 255.63 m (1959-02-19), highest 256.14 m (1959-07-08), average 255.88 m, 84 days measured1960: lowest 255.83 m (1960-12-28), highest 256.30 m (1960-06-27), average 256.00 m, 149 days measured1961: lowest 255.40 m (1961-10-20), highest 255.82 m (1961-01-02), average 255.61 m, 120 days measured1962: lowest 255.45 m (1962-01-01), highest 255.75 m (1962-06-29), average 255.57 m, 155 days measured1963: lowest 255.56 m (1963-01-01), highest 255.88 m (1963-07-19), average 255.69 m, 157 days measured1964: lowest 255.65 m (1964-04-16), highest 256.06 m (1964-12-30), average 255.78 m, 195 days measured1965: lowest 256.04 m (1965-04-23), highest 256.56 m (1965-07-24), average 256.32 m, 222 days measured1966: lowest 256.24 m (1966-04-06), highest 257.03 m (1966-08-19), average 256.62 m, 155 days measured1967: lowest 256.45 m (1967-10-23), highest 256.70 m (1967-01-10), average 256.58 m, 117 days measured1968: lowest 256.33 m (1968-04-06), highest 256.56 m (1968-06-15), average 256.42 m, 96 days measured1969: lowest 256.04 m (1969-09-20), highest 256.34 m (1969-01-18), average 256.22 m, 90 days measured1970: lowest 256.16 m (1970-03-28), highest 256.92 m (1970-08-01), average 256.49 m, 84 days measured1971: lowest 256.31 m (1971-09-25), highest 256.69 m (1971-01-02), average 256.52 m, 64 days measured1972: lowest 256.38 m (1972-04-29), highest 256.71 m (1972-07-14), average 256.56 m, 57 days measured1973: lowest 256.33 m (1973-04-16), highest 256.82 m (1973-07-02), average 256.56 m, 78 days measured1974: lowest 256.46 m (1974-04-13), highest 256.83 m (1974-06-29), average 256.63 m, 63 days measured1975: lowest 256.40 m (1975-04-30), highest 256.99 m (1975-08-11), average 256.65 m, 46 days measured1976: lowest 255.99 m (1976-05-31), highest 256.62 m (1976-01-07), average 256.42 m, 44 days measured1977: lowest 256.15 m (1977-03-31), highest 256.66 m (1977-12-01), average 256.38 m, 59 days measured1978: lowest 256.39 m (1978-09-16), highest 256.60 m (1978-01-20), average 256.46 m, 190 days measured1979: lowest 256.34 m (1979-04-06), highest 256.84 m (1979-07-08), average 256.57 m, 311 days measured1980: lowest 256.07 m (1980-09-13), highest 256.49 m (1980-01-18), average 256.24 m, 282 days measured1981: lowest 255.90 m (1981-09-20), highest 256.15 m (1981-07-08), average 256.05 m, 271 days measured1982: lowest 255.91 m (1982-12-12), highest 256.35 m (1982-06-06), average 256.16 m, 244 days measured1983: lowest 255.95 m (1983-04-27), highest 256.76 m (1983-11-24), average 256.34 m, 365 days measured1984: lowest 256.60 m (1984-03-24), highest 257.12 m (1984-07-04), average 256.81 m, 366 days measured1985: lowest 256.57 m (1985-04-16), highest 257.07 m (1985-07-07), average 256.85 m, 315 days measured1986: lowest 256.56 m (1986-03-30), highest 256.94 m (1986-08-07), average 256.72 m, 335 days measured1987: lowest 256.07 m (1987-12-31), highest 256.58 m (1987-01-04), average 256.39 m, 365 days measured1988: lowest 255.65 m (1988-12-10), highest 256.08 m (1988-01-07), average 255.88 m, 284 days measured1989: lowest 255.58 m (1989-08-22), highest 255.73 m (1989-12-30), average 255.65 m, 284 days measured1990: lowest 255.52 m (1990-10-30), highest 255.94 m (1990-07-01), average 255.73 m, 365 days measured1991: lowest 255.42 m (1991-10-21), highest 255.75 m (1991-06-16), average 255.58 m, 290 days measured1992: lowest 255.51 m (1992-01-01), highest 255.84 m (1992-06-28), average 255.64 m, 366 days measured1993: lowest 255.57 m (1993-06-22), highest 256.05 m (1993-12-30), average 255.76 m, 365 days measured1994: lowest 256.01 m (1994-12-28), highest 256.30 m (1994-07-22), average 256.10 m, 365 days measured1995: lowest 255.88 m (1995-07-26), highest 256.23 m (1995-12-14), average 256.07 m, 365 days measured1996: lowest 256.19 m (1996-01-31), highest 256.97 m (1996-07-09), average 256.65 m, 276 days measured1997: lowest 256.48 m (1997-04-18), highest 256.79 m (1997-06-29), average 256.65 m, 365 days measured1998: lowest 256.35 m (1998-12-20), highest 256.75 m (1998-06-29), average 256.58 m, 321 days measured1999: lowest 256.22 m (1999-12-16), highest 256.76 m (1999-07-25), average 256.43 m, 322 days measured2000: lowest 255.87 m (2000-12-01), highest 256.28 m (2000-07-15), average 256.12 m, 366 days measured2001: lowest 255.75 m (2001-11-25), highest 256.05 m (2001-07-18), average 255.88 m, 365 days measured2002: lowest 255.59 m (2002-12-05), highest 255.84 m (2002-06-30), average 255.72 m, 365 days measured2003: lowest 255.62 m (2003-01-06), highest 255.89 m (2003-07-29), average 255.72 m, 325 days measured2004: lowest 255.82 m (2004-01-13), highest 256.42 m (2004-07-21), average 256.27 m, 260 days measured2005: lowest 256.31 m (2005-04-08), highest 256.96 m (2005-11-11), average 256.61 m, 365 days measured2006: lowest 256.77 m (2006-11-07), highest 257.08 m (2006-06-25), average 256.91 m, 330 days measured2007: lowest 256.64 m (2007-04-17), highest 257.10 m (2007-07-25), average 256.82 m, 365 days measured2008: lowest 256.14 m (2008-12-31), highest 256.70 m (2008-01-01), average 256.44 m, 366 days measured2009: lowest 256.04 m (2009-12-19), highest 256.24 m (2009-08-25), average 256.12 m, 365 days measured2010: lowest 256.01 m (2010-04-09), highest 256.51 m (2010-12-18), average 256.19 m, 365 days measured2011: lowest 256.46 m (2011-04-28), highest 256.85 m (2011-09-12), average 256.63 m, 365 days measured2012: lowest 256.69 m (2012-10-15), highest 257.05 m (2012-06-28), average 256.82 m, 366 days measured2013: lowest 256.53 m (2013-05-03), highest 257.32 m (2013-11-10), average 256.91 m, 336 days measured2014: lowest 256.98 m (2014-12-30), highest 257.53 m (2014-08-09), average 257.21 m, 365 days measured2015: lowest 256.51 m (2015-11-15), highest 256.97 m (2015-01-01), average 256.71 m, 365 days measured2016: lowest 256.45 m (2016-04-08), highest 257.10 m (2016-12-06), average 256.65 m, 274 days measured2017: lowest 256.89 m (2017-04-01), highest 257.47 m (2017-07-17), average 257.12 m, 357 days measured2018: lowest 256.71 m (2018-04-21), highest 257.28 m (2018-09-29), average 257.00 m, 365 days measured2019: lowest 256.60 m (2019-12-31), highest 257.11 m (2019-01-01), average 256.85 m, 365 days measured2020: lowest 256.48 m (2020-04-25), highest 257.35 m (2020-08-10), average 256.87 m, 366 days measured2021: lowest 256.44 m (2021-12-23), highest 257.16 m (2021-07-04), average 256.83 m, 365 days measured2022: lowest 256.24 m (2022-11-27), highest 256.75 m (2022-06-27), average 256.48 m, 255 days measured2023: lowest 255.76 m (2023-12-28), highest 256.25 m (2023-06-08), average 256.09 m, 296 days measured2024: lowest 255.75 m (2024-02-01), highest 256.33 m (2024-07-12), average 255.98 m, 348 days measured2025: lowest 255.87 m (2025-10-11), highest 256.22 m (2025-06-02), average 256.06 m, 365 days measured2026: lowest 256.26 m (2026-10-21), highest 256.35 m (2026-09-27), average 256.30 m, 30 days measured
255.3255.9256.5257.1257.7195419721990200820261954: lowest 256.21 m (1954-11-15), highest 256.40 m (1954-09-09), average 256.35 m, 35 days measured1955: lowest 256.20 m (1955-11-25), highest 256.68 m (1955-07-22), average 256.40 m, 98 days measured1956: lowest 255.93 m (1956-12-31), highest 256.41 m (1956-07-16), average 256.20 m, 83 days measured1957: lowest 255.58 m (1957-12-06), highest 255.93 m (1957-01-04), average 255.77 m, 97 days measured1958: lowest 255.54 m (1958-09-29), highest 255.82 m (1958-05-29), average 255.65 m, 102 days measured1959: lowest 255.63 m (1959-02-19), highest 256.14 m (1959-07-08), average 255.88 m, 84 days measured1960: lowest 255.83 m (1960-12-28), highest 256.30 m (1960-06-27), average 256.00 m, 149 days measured1961: lowest 255.40 m (1961-10-20), highest 255.82 m (1961-01-02), average 255.61 m, 120 days measured1962: lowest 255.45 m (1962-01-01), highest 255.75 m (1962-06-29), average 255.57 m, 155 days measured1963: lowest 255.56 m (1963-01-01), highest 255.88 m (1963-07-19), average 255.69 m, 157 days measured1964: lowest 255.65 m (1964-04-16), highest 256.06 m (1964-12-30), average 255.78 m, 195 days measured1965: lowest 256.04 m (1965-04-23), highest 256.56 m (1965-07-24), average 256.32 m, 222 days measured1966: lowest 256.24 m (1966-04-06), highest 257.03 m (1966-08-19), average 256.62 m, 155 days measured1967: lowest 256.45 m (1967-10-23), highest 256.70 m (1967-01-10), average 256.58 m, 117 days measured1968: lowest 256.33 m (1968-04-06), highest 256.56 m (1968-06-15), average 256.42 m, 96 days measured1969: lowest 256.04 m (1969-09-20), highest 256.34 m (1969-01-18), average 256.22 m, 90 days measured1970: lowest 256.16 m (1970-03-28), highest 256.92 m (1970-08-01), average 256.49 m, 84 days measured1971: lowest 256.31 m (1971-09-25), highest 256.69 m (1971-01-02), average 256.52 m, 64 days measured1972: lowest 256.38 m (1972-04-29), highest 256.71 m (1972-07-14), average 256.56 m, 57 days measured1973: lowest 256.33 m (1973-04-16), highest 256.82 m (1973-07-02), average 256.56 m, 78 days measured1974: lowest 256.46 m (1974-04-13), highest 256.83 m (1974-06-29), average 256.63 m, 63 days measured1975: lowest 256.40 m (1975-04-30), highest 256.99 m (1975-08-11), average 256.65 m, 46 days measured1976: lowest 255.99 m (1976-05-31), highest 256.62 m (1976-01-07), average 256.42 m, 44 days measured1977: lowest 256.15 m (1977-03-31), highest 256.66 m (1977-12-01), average 256.38 m, 59 days measured1978: lowest 256.39 m (1978-09-16), highest 256.60 m (1978-01-20), average 256.46 m, 190 days measured1979: lowest 256.34 m (1979-04-06), highest 256.84 m (1979-07-08), average 256.57 m, 311 days measured1980: lowest 256.07 m (1980-09-13), highest 256.49 m (1980-01-18), average 256.24 m, 282 days measured1981: lowest 255.90 m (1981-09-20), highest 256.15 m (1981-07-08), average 256.05 m, 271 days measured1982: lowest 255.91 m (1982-12-12), highest 256.35 m (1982-06-06), average 256.16 m, 244 days measured1983: lowest 255.95 m (1983-04-27), highest 256.76 m (1983-11-24), average 256.34 m, 365 days measured1984: lowest 256.60 m (1984-03-24), highest 257.12 m (1984-07-04), average 256.81 m, 366 days measured1985: lowest 256.57 m (1985-04-16), highest 257.07 m (1985-07-07), average 256.85 m, 315 days measured1986: lowest 256.56 m (1986-03-30), highest 256.94 m (1986-08-07), average 256.72 m, 335 days measured1987: lowest 256.07 m (1987-12-31), highest 256.58 m (1987-01-04), average 256.39 m, 365 days measured1988: lowest 255.65 m (1988-12-10), highest 256.08 m (1988-01-07), average 255.88 m, 284 days measured1989: lowest 255.58 m (1989-08-22), highest 255.73 m (1989-12-30), average 255.65 m, 284 days measured1990: lowest 255.52 m (1990-10-30), highest 255.94 m (1990-07-01), average 255.73 m, 365 days measured1991: lowest 255.42 m (1991-10-21), highest 255.75 m (1991-06-16), average 255.58 m, 290 days measured1992: lowest 255.51 m (1992-01-01), highest 255.84 m (1992-06-28), average 255.64 m, 366 days measured1993: lowest 255.57 m (1993-06-22), highest 256.05 m (1993-12-30), average 255.76 m, 365 days measured1994: lowest 256.01 m (1994-12-28), highest 256.30 m (1994-07-22), average 256.10 m, 365 days measured1995: lowest 255.88 m (1995-07-26), highest 256.23 m (1995-12-14), average 256.07 m, 365 days measured1996: lowest 256.19 m (1996-01-31), highest 256.97 m (1996-07-09), average 256.65 m, 276 days measured1997: lowest 256.48 m (1997-04-18), highest 256.79 m (1997-06-29), average 256.65 m, 365 days measured1998: lowest 256.35 m (1998-12-20), highest 256.75 m (1998-06-29), average 256.58 m, 321 days measured1999: lowest 256.22 m (1999-12-16), highest 256.76 m (1999-07-25), average 256.43 m, 322 days measured2000: lowest 255.87 m (2000-12-01), highest 256.28 m (2000-07-15), average 256.12 m, 366 days measured2001: lowest 255.75 m (2001-11-25), highest 256.05 m (2001-07-18), average 255.88 m, 365 days measured2002: lowest 255.59 m (2002-12-05), highest 255.84 m (2002-06-30), average 255.72 m, 365 days measured2003: lowest 255.62 m (2003-01-06), highest 255.89 m (2003-07-29), average 255.72 m, 325 days measured2004: lowest 255.82 m (2004-01-13), highest 256.42 m (2004-07-21), average 256.27 m, 260 days measured2005: lowest 256.31 m (2005-04-08), highest 256.96 m (2005-11-11), average 256.61 m, 365 days measured2006: lowest 256.77 m (2006-11-07), highest 257.08 m (2006-06-25), average 256.91 m, 330 days measured2007: lowest 256.64 m (2007-04-17), highest 257.10 m (2007-07-25), average 256.82 m, 365 days measured2008: lowest 256.14 m (2008-12-31), highest 256.70 m (2008-01-01), average 256.44 m, 366 days measured2009: lowest 256.04 m (2009-12-19), highest 256.24 m (2009-08-25), average 256.12 m, 365 days measured2010: lowest 256.01 m (2010-04-09), highest 256.51 m (2010-12-18), average 256.19 m, 365 days measured2011: lowest 256.46 m (2011-04-28), highest 256.85 m (2011-09-12), average 256.63 m, 365 days measured2012: lowest 256.69 m (2012-10-15), highest 257.05 m (2012-06-28), average 256.82 m, 366 days measured2013: lowest 256.53 m (2013-05-03), highest 257.32 m (2013-11-10), average 256.91 m, 336 days measured2014: lowest 256.98 m (2014-12-30), highest 257.53 m (2014-08-09), average 257.21 m, 365 days measured2015: lowest 256.51 m (2015-11-15), highest 256.97 m (2015-01-01), average 256.71 m, 365 days measured2016: lowest 256.45 m (2016-04-08), highest 257.10 m (2016-12-06), average 256.65 m, 274 days measured2017: lowest 256.89 m (2017-04-01), highest 257.47 m (2017-07-17), average 257.12 m, 357 days measured2018: lowest 256.71 m (2018-04-21), highest 257.28 m (2018-09-29), average 257.00 m, 365 days measured2019: lowest 256.60 m (2019-12-31), highest 257.11 m (2019-01-01), average 256.85 m, 365 days measured2020: lowest 256.48 m (2020-04-25), highest 257.35 m (2020-08-10), average 256.87 m, 366 days measured2021: lowest 256.44 m (2021-12-23), highest 257.16 m (2021-07-04), average 256.83 m, 365 days measured2022: lowest 256.24 m (2022-11-27), highest 256.75 m (2022-06-27), average 256.48 m, 255 days measured2023: lowest 255.76 m (2023-12-28), highest 256.25 m (2023-06-08), average 256.09 m, 296 days measured2024: lowest 255.75 m (2024-02-01), highest 256.33 m (2024-07-12), average 255.98 m, 348 days measured2025: lowest 255.87 m (2025-10-11), highest 256.22 m (2025-06-02), average 256.06 m, 365 days measured2026: lowest 256.26 m (2026-10-21), highest 256.35 m (2026-09-27), average 256.30 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.

  • 1992255.510 m on Jan 1
  • 1990255.516 m on Oct 30
  • 1993255.573 m on Jun 22
  • 2002255.592 m on Dec 5
  • 2001255.752 m on Nov 25

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)256.299256.259Oct 21256.352Sep 27
2025256.064255.874Oct 11256.218Jun 2
2024255.977255.753Feb 1256.329Jul 12
2023 (296 days)256.093255.760Dec 28256.247Jun 8
2022 (255 days)256.478256.244Nov 27256.752Jun 27
2021256.830256.438Dec 23257.158Jul 4
2020256.874256.479Apr 25257.348Aug 10
2019256.852256.604Dec 31257.111Jan 1
2018257.005256.711Apr 21257.278Sep 29
2017257.116256.889Apr 1257.474Jul 17
2016 (274 days)256.652256.449Apr 8257.099Dec 6
2015256.707256.511Nov 15256.973Jan 1
2014257.207256.975Dec 30257.526Aug 9
2013256.915256.534May 3257.319Nov 10
2012256.815256.694Oct 15257.053Jun 28
2011256.634256.462Apr 28256.848Sep 12
2010256.195256.013Apr 9256.508Dec 18
2009256.118256.044Dec 19256.242Aug 25
2008256.444256.141Dec 31256.698Jan 1
2007256.823256.641Apr 17257.095Jul 25
2006256.909256.765Nov 7257.082Jun 25
2005256.612256.311Apr 8256.963Nov 11
2004 (260 days)256.270255.821Jan 13256.422Jul 21
2003 (325 days)255.723255.622Jan 6255.891Jul 29
2002255.723255.592Dec 5255.837Jun 30
2001255.883255.752Nov 25256.053Jul 18
2000256.118255.869Dec 1256.283Jul 15
1999 (322 days)256.429256.220Dec 16256.759Jul 25
1998 (321 days)256.575256.353Dec 20256.749Jun 29
1997256.648256.484Apr 18256.792Jun 29
1996 (276 days)256.652256.186Jan 31256.965Jul 9
1995256.069255.885Jul 26256.234Dec 14
1994256.104256.011Dec 28256.302Jul 22
1993255.761255.573Jun 22256.045Dec 30
1992255.639255.510Jan 1255.839Jun 28
1991 (290 days)255.582255.423Oct 21255.748Jun 16
1990255.728255.516Oct 30255.937Jul 1
1989 (284 days)255.648255.579Aug 22255.726Dec 30
1988 (284 days)255.877255.646Dec 10256.083Jan 7
1987256.389256.074Dec 31256.582Jan 4
1986256.717256.564Mar 30256.939Aug 7
1985 (315 days)256.850256.568Apr 16257.071Jul 7
1984256.806256.596Mar 24257.119Jul 4
1983256.341255.945Apr 27256.761Nov 24
1982 (244 days)256.160255.905Dec 12256.352Jun 6
1981 (271 days)256.050255.904Sep 20256.148Jul 8
1980 (282 days)256.235256.067Sep 13256.494Jan 18
1979 (311 days)256.566256.343Apr 6256.837Jul 8
1978 (190 days)256.456256.386Sep 16256.602Jan 20
1977 (59 days)256.382256.148Mar 31256.663Dec 1
1976 (44 days)256.421255.992May 31256.620Jan 7
1975 (46 days)256.652256.404Apr 30256.986Aug 11
1974 (63 days)256.630256.465Apr 13256.834Jun 29
1973 (78 days)256.559256.328Apr 16256.818Jul 2
1972 (57 days)256.561256.379Apr 29256.706Jul 14
1971 (64 days)256.523256.312Sep 25256.690Jan 2
1970 (84 days)256.494256.160Mar 28256.919Aug 1
1969 (90 days)256.224256.035Sep 20256.343Jan 18
1968 (96 days)256.421256.325Apr 6256.562Jun 15
1967 (117 days)256.580256.447Oct 23256.700Jan 10
1966 (155 days)256.620256.245Apr 6257.032Aug 19
1965 (222 days)256.324256.044Apr 23256.556Jul 24
1964 (195 days)255.783255.651Apr 16256.062Dec 30
1963 (157 days)255.686255.557Jan 1255.877Jul 19
1962 (155 days)255.573255.453Jan 1255.755Jun 29
1961 (120 days)255.612255.404Oct 20255.819Jan 2
1960 (149 days)256.005255.825Dec 28256.297Jun 27
1959 (84 days)255.883255.630Feb 19256.139Jul 8
1958 (102 days)255.653255.544Sep 29255.816May 29
1957 (97 days)255.769255.575Dec 6255.928Jan 4
1956 (83 days)256.197255.928Dec 31256.410Jul 16
1955 (98 days)256.403256.203Nov 25256.675Jul 22
1954 (35 days)256.355256.206Nov 15256.398Sep 9

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

Monthly averages

MonthAverageLowestHighest
January256.305255.453257.255
February256.314255.493257.223
March256.299255.499257.154
April256.258255.502257.061
May256.325255.541257.252
June256.430255.573257.441
July256.503255.618257.502
August256.461255.542257.526
September256.379255.425257.383
October256.332255.404257.306
November256.335255.441257.319
December256.309255.435257.295

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Daily levels as CSV (18,482 rows; credit the original agencies listed below)