Country: Canada
United StatesCanadaUnited Kingdom

Big Quill Lake water level history

Daily records since 1956 · Level today: 520.388 m

Highest on record
520.986 m
May 8, 2017
Lowest on record
513.584 m
Aug 21, 1992
Today
520.388 m
Oct 23, 2026
Years of data
70
since 1956

In short

Across 10 complete years, 2024 had the lowest average level (519.610 m) and 2017 the highest (520.716 m).

On average the lake is lowest in August (517.272 m) and highest in January (519.012 m).

Big Quill Lake level, all years

Loading chart…

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

Each year's lowest and highest level

5135155175195211956196519741983199220012010201920261956: lowest 516.32 m (1956-11-09), highest 516.49 m (1956-08-10), average 516.41 m, 5 days measured1957: lowest 516.70 m (1957-09-08), highest 516.76 m (1957-05-15), average 516.73 m, 2 days measured1958: lowest 516.19 m (1958-11-03), highest 516.66 m (1958-04-25), average 516.42 m, 2 days measured1959: lowest 515.97 m (1959-11-03), highest 516.24 m (1959-04-12), average 516.10 m, 2 days measured1960: lowest 515.87 m (1960-11-04), highest 516.11 m (1960-04-22), average 515.99 m, 2 days measured1961: lowest 515.11 m (1961-10-30), highest 515.69 m (1961-05-15), average 515.40 m, 2 days measured1962: lowest 515.03 m (1962-11-09), highest 515.30 m (1962-05-08), average 515.16 m, 2 days measured1963: lowest 514.79 m (1963-11-06), highest 515.08 m (1963-04-26), average 514.93 m, 2 days measured1964: lowest 514.65 m (1964-10-27), highest 514.89 m (1964-04-28), average 514.77 m, 2 days measured1965: lowest 514.70 m (1965-05-10), highest 514.73 m (1965-10-15), average 514.72 m, 2 days measured1966: lowest 514.86 m (1966-10-24), highest 515.00 m (1966-05-03), average 514.93 m, 2 days measured1967: lowest 514.80 m (1967-10-23), highest 515.22 m (1967-05-25), average 515.01 m, 2 days measured1968: lowest 514.63 m (1968-03-24), highest 514.85 m (1968-05-06), average 514.71 m, 10 days measured1969: lowest 514.41 m (1969-09-11), highest 514.99 m (1969-04-26), average 514.70 m, 252 days measured1970: lowest 514.61 m (1970-10-26), highest 515.02 m (1970-05-25), average 514.78 m, 143 days measured1971: lowest 514.48 m (1971-10-24), highest 515.40 m (1971-08-06), average 514.74 m, 213 days measured1972: lowest 514.55 m (1972-01-01), highest 515.12 m (1972-06-06), average 514.71 m, 196 days measured1973: lowest 514.50 m (1973-10-29), highest 514.94 m (1973-06-14), average 514.70 m, 213 days measured1974: lowest 514.63 m (1974-01-17), highest 515.30 m (1974-06-27), average 515.05 m, 228 days measured1975: lowest 515.19 m (1975-01-01), highest 515.82 m (1975-06-26), average 515.37 m, 204 days measured1976: lowest 515.70 m (1976-04-01), highest 516.03 m (1976-05-16), average 515.92 m, 130 days measured1977: lowest 515.54 m (1977-11-10), highest 515.82 m (1977-05-30), average 515.66 m, 60 days measured1978: lowest 515.48 m (1978-10-22), highest 515.71 m (1978-05-24), average 515.56 m, 172 days measured1979: lowest 515.55 m (1979-03-22), highest 516.12 m (1979-05-31), average 515.95 m, 155 days measured1980: lowest 515.58 m (1980-11-18), highest 516.01 m (1980-05-09), average 515.75 m, 215 days measured1981: lowest 515.34 m (1981-09-24), highest 515.65 m (1981-05-11), average 515.48 m, 193 days measured1982: lowest 515.14 m (1982-10-30), highest 515.43 m (1982-05-17), average 515.24 m, 125 days measured1983: lowest 515.01 m (1983-10-30), highest 515.29 m (1983-05-25), average 515.14 m, 37 days measured1984: lowest 514.65 m (1984-08-31), highest 515.11 m (1984-05-08), average 514.90 m, 32 days measured1985: lowest 515.03 m (1985-10-08), highest 515.28 m (1985-05-28), average 515.16 m, 14 days measured1986: lowest 514.79 m (1986-10-30), highest 515.12 m (1986-04-24), average 514.96 m, 23 days measured1987: lowest 514.50 m (1987-10-23), highest 514.92 m (1987-05-19), average 514.65 m, 126 days measured1988: lowest 514.18 m (1988-09-22), highest 514.75 m (1988-05-16), average 514.47 m, 84 days measured1989: lowest 513.99 m (1989-09-25), highest 514.34 m (1989-05-24), average 514.13 m, 177 days measured1990: lowest 513.82 m (1990-10-09), highest 514.47 m (1990-05-16), average 514.08 m, 101 days measured1991: lowest 513.70 m (1991-10-30), highest 514.00 m (1991-05-08), average 513.90 m, 60 days measured1992: lowest 513.58 m (1992-08-21), highest 513.99 m (1992-05-20), average 513.73 m, 179 days measured1995: lowest 513.66 m (1995-03-02), highest 514.50 m (1995-08-31), average 514.32 m, 15 days measured1996: lowest 514.43 m (1996-02-29), highest 514.81 m (1996-05-31), average 514.62 m, 17 days measured1997: lowest 514.58 m (1997-03-01), highest 515.01 m (1997-06-30), average 514.86 m, 14 days measured1998: lowest 514.75 m (1998-09-30), highest 515.01 m (1998-07-07), average 514.89 m, 18 days measured1999: lowest 514.79 m (1999-10-31), highest 515.00 m (1999-04-30), average 514.90 m, 15 days measured2000: lowest 514.51 m (2000-10-26), highest 514.82 m (2000-04-04), average 514.69 m, 33 days measured2001: lowest 514.10 m (2001-10-31), highest 514.55 m (2001-04-30), average 514.36 m, 12 days measured2002: lowest 513.84 m (2002-07-31), highest 514.11 m (2002-04-30), average 514.00 m, 16 days measured2003: lowest 513.87 m (2003-10-31), highest 514.26 m (2003-04-30), average 514.07 m, 14 days measured2004: lowest 513.85 m (2004-03-05), highest 514.05 m (2004-05-31), average 513.97 m, 17 days measured2005: lowest 513.92 m (2005-03-11), highest 514.32 m (2005-04-28), average 514.19 m, 16 days measured2006: lowest 514.33 m (2006-03-01), highest 515.51 m (2006-11-01), average 515.20 m, 17 days measured2007: lowest 515.60 m (2007-03-08), highest 516.79 m (2007-07-31), average 516.41 m, 13 days measured2008: lowest 516.65 m (2008-11-05), highest 516.87 m (2008-05-31), average 516.77 m, 15 days measured2009: lowest 516.64 m (2009-11-05), highest 516.85 m (2009-04-30), average 516.76 m, 14 days measured2010: lowest 516.70 m (2010-03-11), highest 518.17 m (2010-10-31), average 517.42 m, 18 days measured2011: lowest 518.56 m (2011-03-10), highest 519.59 m (2011-07-14), average 519.31 m, 16 days measured2012: lowest 519.35 m (2012-03-02), highest 519.73 m (2012-06-20), average 519.55 m, 245 days measured2013: lowest 519.42 m (2013-10-30), highest 519.79 m (2013-05-25), average 519.59 m, 245 days measured2014: lowest 519.46 m (2014-03-01), highest 520.32 m (2014-08-08), average 519.95 m, 245 days measured2015: lowest 520.18 m (2015-01-01), highest 520.66 m (2015-06-14), average 520.43 m, 365 days measured2016: lowest 520.42 m (2016-01-16), highest 520.78 m (2016-08-03), average 520.61 m, 366 days measured2017: lowest 520.49 m (2017-10-19), highest 520.99 m (2017-05-08), average 520.72 m, 365 days measured2018: lowest 520.42 m (2018-10-30), highest 520.85 m (2018-05-31), average 520.59 m, 365 days measured2019: lowest 520.17 m (2019-10-30), highest 520.54 m (2019-05-04), average 520.38 m, 365 days measured2020: lowest 519.90 m (2020-10-26), highest 520.37 m (2020-06-17), average 520.15 m, 366 days measured2021: lowest 519.49 m (2021-11-09), highest 520.07 m (2021-05-25), average 519.80 m, 365 days measured2022: lowest 519.53 m (2022-01-01), highest 520.03 m (2022-05-31), average 519.68 m, 365 days measured2023: lowest 519.49 m (2023-11-24), highest 519.92 m (2023-06-09), average 519.66 m, 365 days measured2024: lowest 519.43 m (2024-11-08), highest 519.88 m (2024-05-18), average 519.61 m, 366 days measured2025: lowest 519.44 m (2025-10-07), highest 519.77 m (2025-05-16), average 519.58 m, 288 days measured2026: lowest 520.36 m (2026-10-19), highest 520.46 m (2026-09-26), average 520.41 m, 30 days measured
513515517519521195619741992201020261956: lowest 516.32 m (1956-11-09), highest 516.49 m (1956-08-10), average 516.41 m, 5 days measured1957: lowest 516.70 m (1957-09-08), highest 516.76 m (1957-05-15), average 516.73 m, 2 days measured1958: lowest 516.19 m (1958-11-03), highest 516.66 m (1958-04-25), average 516.42 m, 2 days measured1959: lowest 515.97 m (1959-11-03), highest 516.24 m (1959-04-12), average 516.10 m, 2 days measured1960: lowest 515.87 m (1960-11-04), highest 516.11 m (1960-04-22), average 515.99 m, 2 days measured1961: lowest 515.11 m (1961-10-30), highest 515.69 m (1961-05-15), average 515.40 m, 2 days measured1962: lowest 515.03 m (1962-11-09), highest 515.30 m (1962-05-08), average 515.16 m, 2 days measured1963: lowest 514.79 m (1963-11-06), highest 515.08 m (1963-04-26), average 514.93 m, 2 days measured1964: lowest 514.65 m (1964-10-27), highest 514.89 m (1964-04-28), average 514.77 m, 2 days measured1965: lowest 514.70 m (1965-05-10), highest 514.73 m (1965-10-15), average 514.72 m, 2 days measured1966: lowest 514.86 m (1966-10-24), highest 515.00 m (1966-05-03), average 514.93 m, 2 days measured1967: lowest 514.80 m (1967-10-23), highest 515.22 m (1967-05-25), average 515.01 m, 2 days measured1968: lowest 514.63 m (1968-03-24), highest 514.85 m (1968-05-06), average 514.71 m, 10 days measured1969: lowest 514.41 m (1969-09-11), highest 514.99 m (1969-04-26), average 514.70 m, 252 days measured1970: lowest 514.61 m (1970-10-26), highest 515.02 m (1970-05-25), average 514.78 m, 143 days measured1971: lowest 514.48 m (1971-10-24), highest 515.40 m (1971-08-06), average 514.74 m, 213 days measured1972: lowest 514.55 m (1972-01-01), highest 515.12 m (1972-06-06), average 514.71 m, 196 days measured1973: lowest 514.50 m (1973-10-29), highest 514.94 m (1973-06-14), average 514.70 m, 213 days measured1974: lowest 514.63 m (1974-01-17), highest 515.30 m (1974-06-27), average 515.05 m, 228 days measured1975: lowest 515.19 m (1975-01-01), highest 515.82 m (1975-06-26), average 515.37 m, 204 days measured1976: lowest 515.70 m (1976-04-01), highest 516.03 m (1976-05-16), average 515.92 m, 130 days measured1977: lowest 515.54 m (1977-11-10), highest 515.82 m (1977-05-30), average 515.66 m, 60 days measured1978: lowest 515.48 m (1978-10-22), highest 515.71 m (1978-05-24), average 515.56 m, 172 days measured1979: lowest 515.55 m (1979-03-22), highest 516.12 m (1979-05-31), average 515.95 m, 155 days measured1980: lowest 515.58 m (1980-11-18), highest 516.01 m (1980-05-09), average 515.75 m, 215 days measured1981: lowest 515.34 m (1981-09-24), highest 515.65 m (1981-05-11), average 515.48 m, 193 days measured1982: lowest 515.14 m (1982-10-30), highest 515.43 m (1982-05-17), average 515.24 m, 125 days measured1983: lowest 515.01 m (1983-10-30), highest 515.29 m (1983-05-25), average 515.14 m, 37 days measured1984: lowest 514.65 m (1984-08-31), highest 515.11 m (1984-05-08), average 514.90 m, 32 days measured1985: lowest 515.03 m (1985-10-08), highest 515.28 m (1985-05-28), average 515.16 m, 14 days measured1986: lowest 514.79 m (1986-10-30), highest 515.12 m (1986-04-24), average 514.96 m, 23 days measured1987: lowest 514.50 m (1987-10-23), highest 514.92 m (1987-05-19), average 514.65 m, 126 days measured1988: lowest 514.18 m (1988-09-22), highest 514.75 m (1988-05-16), average 514.47 m, 84 days measured1989: lowest 513.99 m (1989-09-25), highest 514.34 m (1989-05-24), average 514.13 m, 177 days measured1990: lowest 513.82 m (1990-10-09), highest 514.47 m (1990-05-16), average 514.08 m, 101 days measured1991: lowest 513.70 m (1991-10-30), highest 514.00 m (1991-05-08), average 513.90 m, 60 days measured1992: lowest 513.58 m (1992-08-21), highest 513.99 m (1992-05-20), average 513.73 m, 179 days measured1995: lowest 513.66 m (1995-03-02), highest 514.50 m (1995-08-31), average 514.32 m, 15 days measured1996: lowest 514.43 m (1996-02-29), highest 514.81 m (1996-05-31), average 514.62 m, 17 days measured1997: lowest 514.58 m (1997-03-01), highest 515.01 m (1997-06-30), average 514.86 m, 14 days measured1998: lowest 514.75 m (1998-09-30), highest 515.01 m (1998-07-07), average 514.89 m, 18 days measured1999: lowest 514.79 m (1999-10-31), highest 515.00 m (1999-04-30), average 514.90 m, 15 days measured2000: lowest 514.51 m (2000-10-26), highest 514.82 m (2000-04-04), average 514.69 m, 33 days measured2001: lowest 514.10 m (2001-10-31), highest 514.55 m (2001-04-30), average 514.36 m, 12 days measured2002: lowest 513.84 m (2002-07-31), highest 514.11 m (2002-04-30), average 514.00 m, 16 days measured2003: lowest 513.87 m (2003-10-31), highest 514.26 m (2003-04-30), average 514.07 m, 14 days measured2004: lowest 513.85 m (2004-03-05), highest 514.05 m (2004-05-31), average 513.97 m, 17 days measured2005: lowest 513.92 m (2005-03-11), highest 514.32 m (2005-04-28), average 514.19 m, 16 days measured2006: lowest 514.33 m (2006-03-01), highest 515.51 m (2006-11-01), average 515.20 m, 17 days measured2007: lowest 515.60 m (2007-03-08), highest 516.79 m (2007-07-31), average 516.41 m, 13 days measured2008: lowest 516.65 m (2008-11-05), highest 516.87 m (2008-05-31), average 516.77 m, 15 days measured2009: lowest 516.64 m (2009-11-05), highest 516.85 m (2009-04-30), average 516.76 m, 14 days measured2010: lowest 516.70 m (2010-03-11), highest 518.17 m (2010-10-31), average 517.42 m, 18 days measured2011: lowest 518.56 m (2011-03-10), highest 519.59 m (2011-07-14), average 519.31 m, 16 days measured2012: lowest 519.35 m (2012-03-02), highest 519.73 m (2012-06-20), average 519.55 m, 245 days measured2013: lowest 519.42 m (2013-10-30), highest 519.79 m (2013-05-25), average 519.59 m, 245 days measured2014: lowest 519.46 m (2014-03-01), highest 520.32 m (2014-08-08), average 519.95 m, 245 days measured2015: lowest 520.18 m (2015-01-01), highest 520.66 m (2015-06-14), average 520.43 m, 365 days measured2016: lowest 520.42 m (2016-01-16), highest 520.78 m (2016-08-03), average 520.61 m, 366 days measured2017: lowest 520.49 m (2017-10-19), highest 520.99 m (2017-05-08), average 520.72 m, 365 days measured2018: lowest 520.42 m (2018-10-30), highest 520.85 m (2018-05-31), average 520.59 m, 365 days measured2019: lowest 520.17 m (2019-10-30), highest 520.54 m (2019-05-04), average 520.38 m, 365 days measured2020: lowest 519.90 m (2020-10-26), highest 520.37 m (2020-06-17), average 520.15 m, 366 days measured2021: lowest 519.49 m (2021-11-09), highest 520.07 m (2021-05-25), average 519.80 m, 365 days measured2022: lowest 519.53 m (2022-01-01), highest 520.03 m (2022-05-31), average 519.68 m, 365 days measured2023: lowest 519.49 m (2023-11-24), highest 519.92 m (2023-06-09), average 519.66 m, 365 days measured2024: lowest 519.43 m (2024-11-08), highest 519.88 m (2024-05-18), average 519.61 m, 366 days measured2025: lowest 519.44 m (2025-10-07), highest 519.77 m (2025-05-16), average 519.58 m, 288 days measured2026: lowest 520.36 m (2026-10-19), highest 520.46 m (2026-09-26), average 520.41 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.

  • 2024519.429 m on Nov 8
  • 2023519.487 m on Nov 24
  • 2021519.492 m on Nov 9
  • 2022519.530 m on Jan 1
  • 2020519.897 m on Oct 26

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)520.414520.365Oct 19520.461Sep 26
2025 (288 days)519.580519.440Oct 7519.770May 16
2024519.610519.429Nov 8519.884May 18
2023519.662519.487Nov 24519.920Jun 9
2022519.682519.530Jan 1520.031May 31
2021519.800519.492Nov 9520.074May 25
2020520.151519.897Oct 26520.369Jun 17
2019520.375520.165Oct 30520.537May 4
2018520.587520.423Oct 30520.850May 31
2017520.716520.488Oct 19520.986May 8
2016520.605520.421Jan 16520.784Aug 3
2015520.429520.182Jan 1520.663Jun 14
2014 (245 days)519.949519.455Mar 1520.318Aug 8
2013 (245 days)519.593519.417Oct 30519.785May 25
2012 (245 days)519.552519.349Mar 2519.730Jun 20
2011 (16 days)519.311518.562Mar 10519.592Jul 14
2010 (18 days)517.420516.697Mar 11518.170Oct 31
2009 (14 days)516.759516.636Nov 5516.852Apr 30
2008 (15 days)516.771516.654Nov 5516.865May 31
2007 (13 days)516.413515.597Mar 8516.787Jul 31
2006 (17 days)515.202514.332Mar 1515.510Nov 1
2005 (16 days)514.192513.916Mar 11514.320Apr 28
2004 (17 days)513.967513.851Mar 5514.050May 31
2003 (14 days)514.069513.870Oct 31514.260Apr 30
2002 (16 days)514.005513.835Jul 31514.107Apr 30
2001 (12 days)514.358514.100Oct 31514.554Apr 30
2000 (33 days)514.691514.505Oct 26514.817Apr 4
1999 (15 days)514.901514.790Oct 31515.000Apr 30
1998 (18 days)514.888514.750Sep 30515.010Jul 7
1997 (14 days)514.858514.582Mar 1515.013Jun 30
1996 (17 days)514.622514.425Feb 29514.810May 31
1995 (15 days)514.316513.662Mar 2514.498Aug 31
1992 (179 days)513.731513.584Aug 21513.991May 20
1991 (60 days)513.903513.697Oct 30514.000May 8
1990 (101 days)514.077513.817Oct 9514.472May 16
1989 (177 days)514.129513.985Sep 25514.338May 24
1988 (84 days)514.467514.180Sep 22514.751May 16
1987 (126 days)514.653514.495Oct 23514.918May 19
1986 (23 days)514.958514.793Oct 30515.120Apr 24
1985 (14 days)515.165515.030Oct 8515.276May 28
1984 (32 days)514.901514.654Aug 31515.112May 8
1983 (37 days)515.142515.012Oct 30515.286May 25
1982 (125 days)515.243515.144Oct 30515.433May 17
1981 (193 days)515.480515.343Sep 24515.650May 11
1980 (215 days)515.747515.578Nov 18516.006May 9
1979 (155 days)515.953515.551Mar 22516.123May 31
1978 (172 days)515.565515.484Oct 22515.709May 24
1977 (60 days)515.659515.542Nov 10515.816May 30
1976 (130 days)515.917515.697Apr 1516.026May 16
1975 (204 days)515.370515.185Jan 1515.822Jun 26
1974 (228 days)515.046514.630Jan 17515.301Jun 27
1973 (213 days)514.703514.502Oct 29514.944Jun 14
1972 (196 days)514.710514.548Jan 1515.124Jun 6
1971 (213 days)514.743514.484Oct 24515.399Aug 6
1970 (143 days)514.785514.612Oct 26515.024May 25
1969 (252 days)514.704514.408Sep 11514.987Apr 26
1968 (10 days)514.714514.630Mar 24514.853May 6
1967 (2 days)515.009514.795Oct 23515.222May 25
1966 (2 days)514.932514.862Oct 24515.002May 3
1965 (2 days)514.716514.701May 10514.731Oct 15
1964 (2 days)514.771514.652Oct 27514.889Apr 28
1963 (2 days)514.931514.786Nov 6515.075Apr 26
1962 (2 days)515.161515.027Nov 9515.295May 8
1961 (2 days)515.402515.112Oct 30515.691May 15
1960 (2 days)515.993515.874Nov 4516.112Apr 22
1959 (2 days)516.103515.968Nov 3516.237Apr 12
1958 (2 days)516.423516.188Nov 3516.657Apr 25
1957 (2 days)516.729516.700Sep 8516.758May 15
1956 (5 days)516.406516.316Nov 9516.487Aug 10

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

Monthly averages

MonthAverageLowestHighest
January519.012514.548520.729
February518.965514.425520.743
March518.564513.662520.795
April518.404514.043520.908
May518.165513.811520.986
June517.452513.687520.929
July517.390513.662520.852
August517.272513.584520.784
September517.282513.610520.672
October517.323513.591520.721
November517.916513.589520.764
December518.664514.536520.705

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Daily levels as CSV (8,355 rows; credit the original agencies listed below)