Country: Canada
United StatesCanadaUnited Kingdom

South Moose Lake water level history

Daily records since 1964 · Level today: 256.387 m

Highest on record
256.828 m
Aug 31, 1966
Lowest on record
254.782 m
May 18, 1964
Today
256.387 m
Oct 23, 2026
Years of data
63
since 1964

In short

Across 46 complete years, 2003 had the lowest average level (255.517 m) and 2017 the highest (256.555 m).

On average the lake is lowest in April (255.990 m) and highest in November (256.235 m).

South Moose Lake level, all years

Loading chart…

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

Each year's lowest and highest level

254.7255.2255.8256.4257.01964197219801988199620042012202020261964: lowest 254.78 m (1964-05-18), highest 255.24 m (1964-09-17), average 254.97 m, 240 days measured1965: lowest 255.78 m (1965-01-18), highest 256.75 m (1965-10-28), average 256.66 m, 89 days measured1966: lowest 256.28 m (1966-03-31), highest 256.83 m (1966-08-31), average 256.61 m, 232 days measured1967: lowest 256.27 m (1967-05-02), highest 256.64 m (1967-08-22), average 256.42 m, 365 days measured1968: lowest 255.98 m (1968-06-30), highest 256.33 m (1968-10-30), average 256.17 m, 340 days measured1969: lowest 255.98 m (1969-06-26), highest 256.60 m (1969-10-30), average 256.27 m, 350 days measured1970: lowest 256.02 m (1970-03-28), highest 256.42 m (1970-10-26), average 256.28 m, 222 days measured1971: lowest 256.15 m (1971-12-30), highest 256.43 m (1971-09-11), average 256.27 m, 337 days measured1972: lowest 256.12 m (1972-04-23), highest 256.60 m (1972-08-26), average 256.30 m, 347 days measured1973: lowest 256.09 m (1973-04-18), highest 256.51 m (1973-07-22), average 256.28 m, 275 days measured1974: lowest 256.27 m (1974-04-21), highest 256.75 m (1974-07-12), average 256.52 m, 298 days measured1975: lowest 256.25 m (1975-10-09), highest 256.56 m (1975-08-11), average 256.41 m, 257 days measured1976: lowest 255.87 m (1976-08-21), highest 256.37 m (1976-12-03), average 256.11 m, 243 days measured1977: lowest 255.79 m (1977-08-02), highest 256.15 m (1977-02-08), average 255.95 m, 269 days measured1978: lowest 255.77 m (1978-01-13), highest 256.60 m (1978-11-06), average 256.11 m, 365 days measured1979: lowest 256.02 m (1979-04-03), highest 256.57 m (1979-12-03), average 256.29 m, 262 days measured1980: lowest 255.84 m (1980-12-18), highest 256.51 m (1980-01-01), average 256.16 m, 338 days measured1981: lowest 255.81 m (1981-03-29), highest 256.37 m (1981-07-08), average 256.06 m, 254 days measured1982: lowest 255.87 m (1982-07-16), highest 256.13 m (1982-01-08), average 255.98 m, 283 days measured1983: lowest 255.88 m (1983-04-24), highest 256.17 m (1983-10-01), average 256.02 m, 339 days measured1984: lowest 255.70 m (1984-10-07), highest 256.12 m (1984-01-11), average 255.88 m, 286 days measured1985: lowest 255.74 m (1985-04-13), highest 256.48 m (1985-09-05), average 256.10 m, 345 days measured1986: lowest 256.07 m (1986-04-10), highest 256.53 m (1986-10-09), average 256.28 m, 352 days measured1987: lowest 255.67 m (1987-10-19), highest 256.38 m (1987-01-01), average 255.97 m, 344 days measured1988: lowest 255.61 m (1988-12-10), highest 255.84 m (1988-06-01), average 255.72 m, 366 days measured1989: lowest 255.19 m (1989-10-01), highest 255.62 m (1989-01-01), average 255.47 m, 329 days measured1990: lowest 255.38 m (1990-01-02), highest 256.18 m (1990-09-07), average 255.78 m, 347 days measured1991: lowest 255.60 m (1991-07-24), highest 255.85 m (1991-05-01), average 255.74 m, 354 days measured1992: lowest 255.70 m (1992-02-08), highest 256.44 m (1992-08-14), average 256.08 m, 366 days measured1993: lowest 255.73 m (1993-04-11), highest 256.59 m (1993-08-24), average 256.14 m, 365 days measured1994: lowest 255.85 m (1994-07-05), highest 256.31 m (1994-01-01), average 256.01 m, 365 days measured1995: lowest 255.62 m (1995-06-29), highest 256.38 m (1995-11-19), average 255.95 m, 365 days measured1996: lowest 255.87 m (1996-04-17), highest 256.52 m (1996-10-14), average 256.21 m, 366 days measured1997: lowest 256.07 m (1997-04-24), highest 256.52 m (1997-10-01), average 256.31 m, 365 days measured1998: lowest 255.93 m (1998-06-20), highest 256.35 m (1998-01-01), average 256.14 m, 365 days measured1999: lowest 255.91 m (1999-05-06), highest 256.16 m (1999-11-21), average 256.04 m, 365 days measured2000: lowest 255.52 m (2000-11-02), highest 256.10 m (2000-01-01), average 255.75 m, 366 days measured2001: lowest 255.49 m (2001-06-15), highest 255.72 m (2001-12-31), average 255.61 m, 263 days measured2002: lowest 255.37 m (2002-09-30), highest 255.73 m (2002-01-24), average 255.57 m, 322 days measured2003: lowest 255.39 m (2003-09-13), highest 255.72 m (2003-12-31), average 255.52 m, 365 days measured2004: lowest 255.73 m (2004-01-01), highest 256.56 m (2004-09-22), average 256.21 m, 366 days measured2005: lowest 256.13 m (2005-04-08), highest 256.71 m (2005-10-07), average 256.43 m, 365 days measured2006: lowest 256.12 m (2006-09-15), highest 256.61 m (2006-01-01), average 256.40 m, 365 days measured2007: lowest 256.10 m (2007-04-19), highest 256.48 m (2007-11-12), average 256.32 m, 365 days measured2008: lowest 255.90 m (2008-07-12), highest 256.36 m (2008-01-01), average 256.07 m, 366 days measured2009: lowest 255.75 m (2009-05-13), highest 256.14 m (2009-09-19), average 255.96 m, 365 days measured2010: lowest 255.59 m (2010-05-01), highest 256.43 m (2010-11-19), average 256.08 m, 365 days measured2011: lowest 256.10 m (2011-04-22), highest 256.55 m (2011-08-25), average 256.37 m, 365 days measured2012: lowest 256.22 m (2012-05-23), highest 256.48 m (2012-09-11), average 256.37 m, 366 days measured2013: lowest 256.04 m (2013-04-30), highest 256.63 m (2013-11-09), average 256.36 m, 365 days measured2014: lowest 256.25 m (2014-04-29), highest 256.62 m (2014-08-07), average 256.45 m, 365 days measured2015: lowest 256.14 m (2015-05-17), highest 256.42 m (2015-11-25), average 256.28 m, 365 days measured2016: lowest 256.08 m (2016-05-11), highest 256.71 m (2016-11-20), average 256.37 m, 366 days measured2017: lowest 256.41 m (2017-04-14), highest 256.73 m (2017-07-03), average 256.56 m, 365 days measured2018: lowest 256.13 m (2018-04-30), highest 256.56 m (2018-11-04), average 256.37 m, 365 days measured2019: lowest 256.18 m (2019-06-01), highest 256.53 m (2019-01-01), average 256.32 m, 365 days measured2020: lowest 256.02 m (2020-04-30), highest 256.60 m (2020-08-08), average 256.35 m, 366 days measured2021: lowest 255.93 m (2021-08-12), highest 256.54 m (2021-01-01), average 256.19 m, 365 days measured2022: lowest 255.97 m (2022-05-13), highest 256.30 m (2022-08-07), average 256.17 m, 365 days measured2023: lowest 255.69 m (2023-07-10), highest 256.17 m (2023-01-01), average 255.88 m, 365 days measured2024: lowest 255.82 m (2024-03-28), highest 256.33 m (2024-12-03), average 256.12 m, 366 days measured2025: lowest 255.87 m (2025-06-08), highest 256.31 m (2025-01-17), average 256.08 m, 365 days measured2026: lowest 256.36 m (2026-10-10), highest 256.42 m (2026-09-26), average 256.40 m, 30 days measured
254.7255.2255.8256.4257.0196419801996201220261964: lowest 254.78 m (1964-05-18), highest 255.24 m (1964-09-17), average 254.97 m, 240 days measured1965: lowest 255.78 m (1965-01-18), highest 256.75 m (1965-10-28), average 256.66 m, 89 days measured1966: lowest 256.28 m (1966-03-31), highest 256.83 m (1966-08-31), average 256.61 m, 232 days measured1967: lowest 256.27 m (1967-05-02), highest 256.64 m (1967-08-22), average 256.42 m, 365 days measured1968: lowest 255.98 m (1968-06-30), highest 256.33 m (1968-10-30), average 256.17 m, 340 days measured1969: lowest 255.98 m (1969-06-26), highest 256.60 m (1969-10-30), average 256.27 m, 350 days measured1970: lowest 256.02 m (1970-03-28), highest 256.42 m (1970-10-26), average 256.28 m, 222 days measured1971: lowest 256.15 m (1971-12-30), highest 256.43 m (1971-09-11), average 256.27 m, 337 days measured1972: lowest 256.12 m (1972-04-23), highest 256.60 m (1972-08-26), average 256.30 m, 347 days measured1973: lowest 256.09 m (1973-04-18), highest 256.51 m (1973-07-22), average 256.28 m, 275 days measured1974: lowest 256.27 m (1974-04-21), highest 256.75 m (1974-07-12), average 256.52 m, 298 days measured1975: lowest 256.25 m (1975-10-09), highest 256.56 m (1975-08-11), average 256.41 m, 257 days measured1976: lowest 255.87 m (1976-08-21), highest 256.37 m (1976-12-03), average 256.11 m, 243 days measured1977: lowest 255.79 m (1977-08-02), highest 256.15 m (1977-02-08), average 255.95 m, 269 days measured1978: lowest 255.77 m (1978-01-13), highest 256.60 m (1978-11-06), average 256.11 m, 365 days measured1979: lowest 256.02 m (1979-04-03), highest 256.57 m (1979-12-03), average 256.29 m, 262 days measured1980: lowest 255.84 m (1980-12-18), highest 256.51 m (1980-01-01), average 256.16 m, 338 days measured1981: lowest 255.81 m (1981-03-29), highest 256.37 m (1981-07-08), average 256.06 m, 254 days measured1982: lowest 255.87 m (1982-07-16), highest 256.13 m (1982-01-08), average 255.98 m, 283 days measured1983: lowest 255.88 m (1983-04-24), highest 256.17 m (1983-10-01), average 256.02 m, 339 days measured1984: lowest 255.70 m (1984-10-07), highest 256.12 m (1984-01-11), average 255.88 m, 286 days measured1985: lowest 255.74 m (1985-04-13), highest 256.48 m (1985-09-05), average 256.10 m, 345 days measured1986: lowest 256.07 m (1986-04-10), highest 256.53 m (1986-10-09), average 256.28 m, 352 days measured1987: lowest 255.67 m (1987-10-19), highest 256.38 m (1987-01-01), average 255.97 m, 344 days measured1988: lowest 255.61 m (1988-12-10), highest 255.84 m (1988-06-01), average 255.72 m, 366 days measured1989: lowest 255.19 m (1989-10-01), highest 255.62 m (1989-01-01), average 255.47 m, 329 days measured1990: lowest 255.38 m (1990-01-02), highest 256.18 m (1990-09-07), average 255.78 m, 347 days measured1991: lowest 255.60 m (1991-07-24), highest 255.85 m (1991-05-01), average 255.74 m, 354 days measured1992: lowest 255.70 m (1992-02-08), highest 256.44 m (1992-08-14), average 256.08 m, 366 days measured1993: lowest 255.73 m (1993-04-11), highest 256.59 m (1993-08-24), average 256.14 m, 365 days measured1994: lowest 255.85 m (1994-07-05), highest 256.31 m (1994-01-01), average 256.01 m, 365 days measured1995: lowest 255.62 m (1995-06-29), highest 256.38 m (1995-11-19), average 255.95 m, 365 days measured1996: lowest 255.87 m (1996-04-17), highest 256.52 m (1996-10-14), average 256.21 m, 366 days measured1997: lowest 256.07 m (1997-04-24), highest 256.52 m (1997-10-01), average 256.31 m, 365 days measured1998: lowest 255.93 m (1998-06-20), highest 256.35 m (1998-01-01), average 256.14 m, 365 days measured1999: lowest 255.91 m (1999-05-06), highest 256.16 m (1999-11-21), average 256.04 m, 365 days measured2000: lowest 255.52 m (2000-11-02), highest 256.10 m (2000-01-01), average 255.75 m, 366 days measured2001: lowest 255.49 m (2001-06-15), highest 255.72 m (2001-12-31), average 255.61 m, 263 days measured2002: lowest 255.37 m (2002-09-30), highest 255.73 m (2002-01-24), average 255.57 m, 322 days measured2003: lowest 255.39 m (2003-09-13), highest 255.72 m (2003-12-31), average 255.52 m, 365 days measured2004: lowest 255.73 m (2004-01-01), highest 256.56 m (2004-09-22), average 256.21 m, 366 days measured2005: lowest 256.13 m (2005-04-08), highest 256.71 m (2005-10-07), average 256.43 m, 365 days measured2006: lowest 256.12 m (2006-09-15), highest 256.61 m (2006-01-01), average 256.40 m, 365 days measured2007: lowest 256.10 m (2007-04-19), highest 256.48 m (2007-11-12), average 256.32 m, 365 days measured2008: lowest 255.90 m (2008-07-12), highest 256.36 m (2008-01-01), average 256.07 m, 366 days measured2009: lowest 255.75 m (2009-05-13), highest 256.14 m (2009-09-19), average 255.96 m, 365 days measured2010: lowest 255.59 m (2010-05-01), highest 256.43 m (2010-11-19), average 256.08 m, 365 days measured2011: lowest 256.10 m (2011-04-22), highest 256.55 m (2011-08-25), average 256.37 m, 365 days measured2012: lowest 256.22 m (2012-05-23), highest 256.48 m (2012-09-11), average 256.37 m, 366 days measured2013: lowest 256.04 m (2013-04-30), highest 256.63 m (2013-11-09), average 256.36 m, 365 days measured2014: lowest 256.25 m (2014-04-29), highest 256.62 m (2014-08-07), average 256.45 m, 365 days measured2015: lowest 256.14 m (2015-05-17), highest 256.42 m (2015-11-25), average 256.28 m, 365 days measured2016: lowest 256.08 m (2016-05-11), highest 256.71 m (2016-11-20), average 256.37 m, 366 days measured2017: lowest 256.41 m (2017-04-14), highest 256.73 m (2017-07-03), average 256.56 m, 365 days measured2018: lowest 256.13 m (2018-04-30), highest 256.56 m (2018-11-04), average 256.37 m, 365 days measured2019: lowest 256.18 m (2019-06-01), highest 256.53 m (2019-01-01), average 256.32 m, 365 days measured2020: lowest 256.02 m (2020-04-30), highest 256.60 m (2020-08-08), average 256.35 m, 366 days measured2021: lowest 255.93 m (2021-08-12), highest 256.54 m (2021-01-01), average 256.19 m, 365 days measured2022: lowest 255.97 m (2022-05-13), highest 256.30 m (2022-08-07), average 256.17 m, 365 days measured2023: lowest 255.69 m (2023-07-10), highest 256.17 m (2023-01-01), average 255.88 m, 365 days measured2024: lowest 255.82 m (2024-03-28), highest 256.33 m (2024-12-03), average 256.12 m, 366 days measured2025: lowest 255.87 m (2025-06-08), highest 256.31 m (2025-01-17), average 256.08 m, 365 days measured2026: lowest 256.36 m (2026-10-10), highest 256.42 m (2026-09-26), average 256.40 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.

  • 1990255.380 m on Jan 2
  • 2003255.385 m on Sep 13
  • 2000255.524 m on Nov 2
  • 2010255.588 m on May 1
  • 1991255.602 m on Jul 24

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)256.396256.355Oct 10256.423Sep 26
2025256.077255.869Jun 8256.309Jan 17
2024256.120255.819Mar 28256.332Dec 3
2023255.883255.693Jul 10256.170Jan 1
2022256.166255.972May 13256.295Aug 7
2021256.192255.927Aug 12256.544Jan 1
2020256.347256.015Apr 30256.596Aug 8
2019256.323256.177Jun 1256.531Jan 1
2018256.366256.126Apr 30256.564Nov 4
2017256.555256.413Apr 14256.727Jul 3
2016256.365256.083May 11256.710Nov 20
2015256.285256.139May 17256.420Nov 25
2014256.455256.249Apr 29256.615Aug 7
2013256.364256.041Apr 30256.626Nov 9
2012256.372256.222May 23256.477Sep 11
2011256.366256.100Apr 22256.545Aug 25
2010256.081255.588May 1256.431Nov 19
2009255.962255.751May 13256.142Sep 19
2008256.067255.900Jul 12256.360Jan 1
2007256.323256.100Apr 19256.484Nov 12
2006256.395256.118Sep 15256.612Jan 1
2005256.432256.128Apr 8256.709Oct 7
2004256.207255.729Jan 1256.564Sep 22
2003255.517255.385Sep 13255.723Dec 31
2002 (322 days)255.567255.366Sep 30255.734Jan 24
2001 (263 days)255.612255.487Jun 15255.723Dec 31
2000255.755255.524Nov 2256.095Jan 1
1999256.037255.912May 6256.160Nov 21
1998256.143255.925Jun 20256.351Jan 1
1997256.308256.072Apr 24256.516Oct 1
1996256.208255.865Apr 17256.516Oct 14
1995255.955255.620Jun 29256.382Nov 19
1994256.009255.854Jul 5256.309Jan 1
1993256.139255.727Apr 11256.587Aug 24
1992256.078255.699Feb 8256.437Aug 14
1991255.736255.602Jul 24255.845May 1
1990255.784255.380Jan 2256.182Sep 7
1989 (329 days)255.471255.194Oct 1255.619Jan 1
1988255.724255.613Dec 10255.837Jun 1
1987255.973255.673Oct 19256.381Jan 1
1986256.281256.070Apr 10256.528Oct 9
1985256.102255.741Apr 13256.484Sep 5
1984 (286 days)255.879255.696Oct 7256.116Jan 11
1983256.020255.882Apr 24256.174Oct 1
1982 (283 days)255.983255.870Jul 16256.133Jan 8
1981 (254 days)256.060255.812Mar 29256.368Jul 8
1980256.159255.843Dec 18256.507Jan 1
1979 (262 days)256.293256.016Apr 3256.573Dec 3
1978256.110255.767Jan 13256.605Nov 6
1977 (269 days)255.951255.791Aug 2256.154Feb 8
1976 (243 days)256.106255.870Aug 21256.370Dec 3
1975 (257 days)256.405256.248Oct 9256.556Aug 11
1974 (298 days)256.517256.270Apr 21256.754Jul 12
1973 (275 days)256.281256.087Apr 18256.514Jul 22
1972256.300256.120Apr 23256.596Aug 26
1971256.272256.148Dec 30256.431Sep 11
1970 (222 days)256.284256.017Mar 28256.419Oct 26
1969256.267255.983Jun 26256.605Oct 30
1968256.172255.980Jun 30256.334Oct 30
1967256.421256.273May 2256.642Aug 22
1966 (232 days)256.611256.282Mar 31256.828Aug 31
1965 (89 days)256.659255.779Jan 18256.754Oct 28
1964 (240 days)254.972254.782May 18255.240Sep 17

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

Monthly averages

MonthAverageLowestHighest
January256.135255.380256.661
February256.084254.813256.582
March256.018254.813256.504
April255.990254.813256.438
May256.037254.782256.559
June256.077254.904256.725
July256.148254.950256.760
August256.187254.996256.828
September256.193255.057256.785
October256.197255.118256.754
November256.235255.366256.724
December256.205255.363256.706

Download

Daily levels as CSV (20,732 rows; credit the original agencies listed below)