Country: Canada
United StatesCanadaUnited Kingdom

Granville Lake water level history

Daily records since 1951 · Level today: 260.197 m

Highest on record
263.808 m
Sep 6, 2020
Lowest on record
258.811 m
Apr 7, 2024
Today
260.197 m
Oct 22, 2026
Years of data
75
since 1951

In short

Across 63 complete years, 2024 had the lowest average level (259.207 m) and 2020 the highest (261.683 m).

On average the lake is lowest in April (259.644 m) and highest in June (260.335 m).

Granville Lake level, all years

Loading chart…

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

Each year's lowest and highest level

2592602612632641951196119711981199120012011202120261951: lowest 259.53 m (1951-12-31), highest 260.25 m (1951-10-04), average 259.87 m, 90 days measured1952: lowest 259.20 m (1952-09-15), highest 259.50 m (1952-01-01), average 259.32 m, 364 days measured1953: lowest 259.10 m (1953-02-18), highest 259.75 m (1953-06-05), average 259.40 m, 348 days measured1954: lowest 259.15 m (1954-05-06), highest 260.66 m (1954-09-23), average 259.64 m, 261 days measured1955: lowest 259.53 m (1955-03-23), highest 260.66 m (1955-06-06), average 259.97 m, 345 days measured1956: lowest 258.94 m (1956-10-22), highest 260.21 m (1956-06-06), average 259.47 m, 354 days measured1957: lowest 258.88 m (1957-04-16), highest 260.29 m (1957-08-16), average 259.58 m, 330 days measured1958: lowest 259.37 m (1958-04-11), highest 260.20 m (1958-10-17), average 259.85 m, 348 days measured1959: lowest 259.39 m (1959-04-28), highest 261.27 m (1959-08-03), average 260.22 m, 345 days measured1960: lowest 259.42 m (1960-05-07), highest 261.38 m (1960-08-03), average 260.26 m, 366 days measured1961: lowest 259.40 m (1961-10-22), highest 260.60 m (1961-06-15), average 259.78 m, 343 days measured1962: lowest 259.49 m (1962-01-01), highest 261.44 m (1962-06-09), average 259.94 m, 348 days measured1963: lowest 259.60 m (1963-01-04), highest 260.67 m (1963-07-30), average 260.01 m, 343 days measured1964: lowest 259.57 m (1964-04-11), highest 260.79 m (1964-10-11), average 260.06 m, 338 days measured1965: lowest 259.63 m (1965-04-27), highest 260.67 m (1965-06-09), average 260.09 m, 346 days measured1966: lowest 259.41 m (1966-12-31), highest 260.74 m (1966-07-05), average 259.88 m, 344 days measured1967: lowest 259.37 m (1967-01-25), highest 260.36 m (1967-06-19), average 259.67 m, 343 days measured1968: lowest 259.50 m (1968-08-28), highest 260.15 m (1968-06-04), average 259.74 m, 344 days measured1969: lowest 259.38 m (1969-08-24), highest 260.47 m (1969-10-17), average 259.86 m, 348 days measured1970: lowest 259.53 m (1970-04-24), highest 260.64 m (1970-08-02), average 259.91 m, 346 days measured1971: lowest 259.15 m (1971-04-15), highest 261.30 m (1971-10-19), average 260.08 m, 346 days measured1972: lowest 259.96 m (1972-09-19), highest 260.85 m (1972-06-07), average 260.25 m, 346 days measured1973: lowest 259.84 m (1973-05-02), highest 260.42 m (1973-06-18), average 260.05 m, 349 days measured1974: lowest 259.76 m (1974-03-16), highest 261.39 m (1974-08-01), average 260.55 m, 350 days measured1975: lowest 259.87 m (1975-12-31), highest 261.12 m (1975-06-27), average 260.43 m, 345 days measured1976: lowest 259.69 m (1976-06-19), highest 261.10 m (1976-10-30), average 260.29 m, 351 days measured1977: lowest 260.12 m (1977-04-14), highest 261.49 m (1977-08-10), average 260.74 m, 365 days measured1978: lowest 260.03 m (1978-04-27), highest 261.01 m (1978-11-13), average 260.37 m, 365 days measured1979: lowest 259.78 m (1979-09-27), highest 260.67 m (1979-06-27), average 260.18 m, 365 days measured1980: lowest 259.86 m (1980-07-21), highest 260.40 m (1980-10-21), average 260.13 m, 216 days measured1981: lowest 259.19 m (1981-09-23), highest 260.17 m (1981-05-28), average 259.73 m, 365 days measured1982: lowest 259.18 m (1982-03-31), highest 259.97 m (1982-07-05), average 259.57 m, 289 days measured1983: lowest 259.47 m (1983-04-12), highest 260.39 m (1983-10-23), average 259.90 m, 246 days measured1984: lowest 259.52 m (1984-10-29), highest 260.29 m (1984-05-09), average 259.89 m, 366 days measured1985: lowest 259.39 m (1985-11-23), highest 260.64 m (1985-07-05), average 259.92 m, 237 days measured1986: lowest 259.50 m (1986-01-01), highest 260.48 m (1986-06-19), average 259.95 m, 365 days measured1987: lowest 259.63 m (1987-10-26), highest 260.25 m (1987-05-24), average 259.86 m, 365 days measured1988: lowest 259.45 m (1988-12-28), highest 260.03 m (1988-06-07), average 259.74 m, 366 days measured1989: lowest 259.36 m (1989-04-30), highest 260.18 m (1989-07-05), average 259.64 m, 293 days measured1990: lowest 259.52 m (1990-07-30), highest 260.21 m (1990-09-12), average 259.82 m, 268 days measured1991: lowest 259.05 m (1991-04-17), highest 260.10 m (1991-07-05), average 259.55 m, 365 days measured1992: lowest 259.36 m (1992-09-11), highest 260.48 m (1992-06-15), average 259.70 m, 366 days measured1993: lowest 259.02 m (1993-12-07), highest 259.56 m (1993-01-08), average 259.27 m, 365 days measured1994: lowest 258.82 m (1994-04-19), highest 259.88 m (1994-06-14), average 259.22 m, 365 days measured1995: lowest 258.85 m (1995-07-28), highest 259.45 m (1995-11-19), average 259.27 m, 365 days measured1996: lowest 259.08 m (1996-03-07), highest 260.10 m (1996-06-21), average 259.57 m, 366 days measured1997: lowest 259.58 m (1997-02-22), highest 262.16 m (1997-11-23), average 260.51 m, 365 days measured1998: lowest 259.31 m (1998-12-31), highest 261.71 m (1998-01-01), average 260.22 m, 365 days measured1999: lowest 258.94 m (1999-04-12), highest 259.91 m (1999-06-04), average 259.36 m, 365 days measured2000: lowest 259.33 m (2000-04-20), highest 260.48 m (2000-07-29), average 259.83 m, 366 days measured2001: lowest 259.53 m (2001-11-20), highest 260.47 m (2001-06-01), average 259.73 m, 365 days measured2002: lowest 259.38 m (2002-04-14), highest 259.88 m (2002-06-10), average 259.58 m, 365 days measured2003: lowest 259.12 m (2003-04-17), highest 259.66 m (2003-07-30), average 259.39 m, 365 days measured2004: lowest 259.29 m (2004-05-07), highest 260.01 m (2004-10-10), average 259.61 m, 366 days measured2005: lowest 259.45 m (2005-02-23), highest 263.56 m (2005-10-09), average 260.96 m, 365 days measured2006: lowest 260.06 m (2006-12-31), highest 261.74 m (2006-08-13), average 260.86 m, 296 days measured2007: lowest 259.69 m (2007-04-16), highest 261.05 m (2007-06-03), average 260.19 m, 365 days measured2008: lowest 259.75 m (2008-04-18), highest 261.23 m (2008-08-05), average 260.10 m, 366 days measured2009: lowest 259.70 m (2009-04-29), highest 262.10 m (2009-09-21), average 260.73 m, 365 days measured2010: lowest 259.64 m (2010-08-08), highest 260.72 m (2010-01-01), average 260.09 m, 343 days measured2011: lowest 259.47 m (2011-04-26), highest 260.75 m (2011-09-13), average 259.95 m, 365 days measured2012: lowest 259.75 m (2012-04-06), highest 261.10 m (2012-07-08), average 260.34 m, 366 days measured2013: lowest 259.93 m (2013-05-04), highest 260.73 m (2013-10-21), average 260.27 m, 365 days measured2014: lowest 259.70 m (2014-04-30), highest 260.69 m (2014-07-25), average 260.18 m, 365 days measured2015: lowest 259.59 m (2015-12-31), highest 259.95 m (2015-05-25), average 259.78 m, 365 days measured2016: lowest 259.20 m (2016-04-12), highest 260.34 m (2016-12-23), average 259.76 m, 366 days measured2017: lowest 260.11 m (2017-04-30), highest 262.51 m (2017-06-10), average 261.10 m, 365 days measured2018: lowest 260.01 m (2018-04-21), highest 261.97 m (2018-09-27), average 260.95 m, 330 days measured2019: lowest 260.04 m (2019-04-19), highest 260.88 m (2019-07-09), average 260.51 m, 327 days measured2020: lowest 260.11 m (2020-04-30), highest 263.81 m (2020-09-06), average 261.68 m, 366 days measured2021: lowest 260.33 m (2021-12-31), highest 262.46 m (2021-07-12), average 261.19 m, 365 days measured2022: lowest 259.86 m (2022-04-28), highest 262.00 m (2022-06-25), average 260.70 m, 351 days measured2023: lowest 259.16 m (2023-12-31), highest 260.32 m (2023-06-08), average 259.68 m, 312 days measured2024: lowest 258.81 m (2024-04-07), highest 260.00 m (2024-07-14), average 259.21 m, 357 days measured2025: lowest 258.96 m (2025-12-22), highest 259.27 m (2025-05-08), average 259.08 m, 240 days measured2026: lowest 260.03 m (2026-09-22), highest 260.20 m (2026-10-20), average 260.12 m, 30 days measured
259260261263264195119701989200820261951: lowest 259.53 m (1951-12-31), highest 260.25 m (1951-10-04), average 259.87 m, 90 days measured1952: lowest 259.20 m (1952-09-15), highest 259.50 m (1952-01-01), average 259.32 m, 364 days measured1953: lowest 259.10 m (1953-02-18), highest 259.75 m (1953-06-05), average 259.40 m, 348 days measured1954: lowest 259.15 m (1954-05-06), highest 260.66 m (1954-09-23), average 259.64 m, 261 days measured1955: lowest 259.53 m (1955-03-23), highest 260.66 m (1955-06-06), average 259.97 m, 345 days measured1956: lowest 258.94 m (1956-10-22), highest 260.21 m (1956-06-06), average 259.47 m, 354 days measured1957: lowest 258.88 m (1957-04-16), highest 260.29 m (1957-08-16), average 259.58 m, 330 days measured1958: lowest 259.37 m (1958-04-11), highest 260.20 m (1958-10-17), average 259.85 m, 348 days measured1959: lowest 259.39 m (1959-04-28), highest 261.27 m (1959-08-03), average 260.22 m, 345 days measured1960: lowest 259.42 m (1960-05-07), highest 261.38 m (1960-08-03), average 260.26 m, 366 days measured1961: lowest 259.40 m (1961-10-22), highest 260.60 m (1961-06-15), average 259.78 m, 343 days measured1962: lowest 259.49 m (1962-01-01), highest 261.44 m (1962-06-09), average 259.94 m, 348 days measured1963: lowest 259.60 m (1963-01-04), highest 260.67 m (1963-07-30), average 260.01 m, 343 days measured1964: lowest 259.57 m (1964-04-11), highest 260.79 m (1964-10-11), average 260.06 m, 338 days measured1965: lowest 259.63 m (1965-04-27), highest 260.67 m (1965-06-09), average 260.09 m, 346 days measured1966: lowest 259.41 m (1966-12-31), highest 260.74 m (1966-07-05), average 259.88 m, 344 days measured1967: lowest 259.37 m (1967-01-25), highest 260.36 m (1967-06-19), average 259.67 m, 343 days measured1968: lowest 259.50 m (1968-08-28), highest 260.15 m (1968-06-04), average 259.74 m, 344 days measured1969: lowest 259.38 m (1969-08-24), highest 260.47 m (1969-10-17), average 259.86 m, 348 days measured1970: lowest 259.53 m (1970-04-24), highest 260.64 m (1970-08-02), average 259.91 m, 346 days measured1971: lowest 259.15 m (1971-04-15), highest 261.30 m (1971-10-19), average 260.08 m, 346 days measured1972: lowest 259.96 m (1972-09-19), highest 260.85 m (1972-06-07), average 260.25 m, 346 days measured1973: lowest 259.84 m (1973-05-02), highest 260.42 m (1973-06-18), average 260.05 m, 349 days measured1974: lowest 259.76 m (1974-03-16), highest 261.39 m (1974-08-01), average 260.55 m, 350 days measured1975: lowest 259.87 m (1975-12-31), highest 261.12 m (1975-06-27), average 260.43 m, 345 days measured1976: lowest 259.69 m (1976-06-19), highest 261.10 m (1976-10-30), average 260.29 m, 351 days measured1977: lowest 260.12 m (1977-04-14), highest 261.49 m (1977-08-10), average 260.74 m, 365 days measured1978: lowest 260.03 m (1978-04-27), highest 261.01 m (1978-11-13), average 260.37 m, 365 days measured1979: lowest 259.78 m (1979-09-27), highest 260.67 m (1979-06-27), average 260.18 m, 365 days measured1980: lowest 259.86 m (1980-07-21), highest 260.40 m (1980-10-21), average 260.13 m, 216 days measured1981: lowest 259.19 m (1981-09-23), highest 260.17 m (1981-05-28), average 259.73 m, 365 days measured1982: lowest 259.18 m (1982-03-31), highest 259.97 m (1982-07-05), average 259.57 m, 289 days measured1983: lowest 259.47 m (1983-04-12), highest 260.39 m (1983-10-23), average 259.90 m, 246 days measured1984: lowest 259.52 m (1984-10-29), highest 260.29 m (1984-05-09), average 259.89 m, 366 days measured1985: lowest 259.39 m (1985-11-23), highest 260.64 m (1985-07-05), average 259.92 m, 237 days measured1986: lowest 259.50 m (1986-01-01), highest 260.48 m (1986-06-19), average 259.95 m, 365 days measured1987: lowest 259.63 m (1987-10-26), highest 260.25 m (1987-05-24), average 259.86 m, 365 days measured1988: lowest 259.45 m (1988-12-28), highest 260.03 m (1988-06-07), average 259.74 m, 366 days measured1989: lowest 259.36 m (1989-04-30), highest 260.18 m (1989-07-05), average 259.64 m, 293 days measured1990: lowest 259.52 m (1990-07-30), highest 260.21 m (1990-09-12), average 259.82 m, 268 days measured1991: lowest 259.05 m (1991-04-17), highest 260.10 m (1991-07-05), average 259.55 m, 365 days measured1992: lowest 259.36 m (1992-09-11), highest 260.48 m (1992-06-15), average 259.70 m, 366 days measured1993: lowest 259.02 m (1993-12-07), highest 259.56 m (1993-01-08), average 259.27 m, 365 days measured1994: lowest 258.82 m (1994-04-19), highest 259.88 m (1994-06-14), average 259.22 m, 365 days measured1995: lowest 258.85 m (1995-07-28), highest 259.45 m (1995-11-19), average 259.27 m, 365 days measured1996: lowest 259.08 m (1996-03-07), highest 260.10 m (1996-06-21), average 259.57 m, 366 days measured1997: lowest 259.58 m (1997-02-22), highest 262.16 m (1997-11-23), average 260.51 m, 365 days measured1998: lowest 259.31 m (1998-12-31), highest 261.71 m (1998-01-01), average 260.22 m, 365 days measured1999: lowest 258.94 m (1999-04-12), highest 259.91 m (1999-06-04), average 259.36 m, 365 days measured2000: lowest 259.33 m (2000-04-20), highest 260.48 m (2000-07-29), average 259.83 m, 366 days measured2001: lowest 259.53 m (2001-11-20), highest 260.47 m (2001-06-01), average 259.73 m, 365 days measured2002: lowest 259.38 m (2002-04-14), highest 259.88 m (2002-06-10), average 259.58 m, 365 days measured2003: lowest 259.12 m (2003-04-17), highest 259.66 m (2003-07-30), average 259.39 m, 365 days measured2004: lowest 259.29 m (2004-05-07), highest 260.01 m (2004-10-10), average 259.61 m, 366 days measured2005: lowest 259.45 m (2005-02-23), highest 263.56 m (2005-10-09), average 260.96 m, 365 days measured2006: lowest 260.06 m (2006-12-31), highest 261.74 m (2006-08-13), average 260.86 m, 296 days measured2007: lowest 259.69 m (2007-04-16), highest 261.05 m (2007-06-03), average 260.19 m, 365 days measured2008: lowest 259.75 m (2008-04-18), highest 261.23 m (2008-08-05), average 260.10 m, 366 days measured2009: lowest 259.70 m (2009-04-29), highest 262.10 m (2009-09-21), average 260.73 m, 365 days measured2010: lowest 259.64 m (2010-08-08), highest 260.72 m (2010-01-01), average 260.09 m, 343 days measured2011: lowest 259.47 m (2011-04-26), highest 260.75 m (2011-09-13), average 259.95 m, 365 days measured2012: lowest 259.75 m (2012-04-06), highest 261.10 m (2012-07-08), average 260.34 m, 366 days measured2013: lowest 259.93 m (2013-05-04), highest 260.73 m (2013-10-21), average 260.27 m, 365 days measured2014: lowest 259.70 m (2014-04-30), highest 260.69 m (2014-07-25), average 260.18 m, 365 days measured2015: lowest 259.59 m (2015-12-31), highest 259.95 m (2015-05-25), average 259.78 m, 365 days measured2016: lowest 259.20 m (2016-04-12), highest 260.34 m (2016-12-23), average 259.76 m, 366 days measured2017: lowest 260.11 m (2017-04-30), highest 262.51 m (2017-06-10), average 261.10 m, 365 days measured2018: lowest 260.01 m (2018-04-21), highest 261.97 m (2018-09-27), average 260.95 m, 330 days measured2019: lowest 260.04 m (2019-04-19), highest 260.88 m (2019-07-09), average 260.51 m, 327 days measured2020: lowest 260.11 m (2020-04-30), highest 263.81 m (2020-09-06), average 261.68 m, 366 days measured2021: lowest 260.33 m (2021-12-31), highest 262.46 m (2021-07-12), average 261.19 m, 365 days measured2022: lowest 259.86 m (2022-04-28), highest 262.00 m (2022-06-25), average 260.70 m, 351 days measured2023: lowest 259.16 m (2023-12-31), highest 260.32 m (2023-06-08), average 259.68 m, 312 days measured2024: lowest 258.81 m (2024-04-07), highest 260.00 m (2024-07-14), average 259.21 m, 357 days measured2025: lowest 258.96 m (2025-12-22), highest 259.27 m (2025-05-08), average 259.08 m, 240 days measured2026: lowest 260.03 m (2026-09-22), highest 260.20 m (2026-10-20), average 260.12 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.

  • 2024258.811 m on Apr 7
  • 1994258.816 m on Apr 19
  • 1995258.850 m on Jul 28
  • 1957258.882 m on Apr 16
  • 1999258.935 m on Apr 12

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)260.123260.034Sep 22260.198Oct 20
2025 (240 days)259.080258.961Dec 22259.274May 8
2024259.207258.811Apr 7260.001Jul 14
2023 (312 days)259.682259.157Dec 31260.320Jun 8
2022260.698259.862Apr 28261.999Jun 25
2021261.192260.332Dec 31262.460Jul 12
2020261.683260.111Apr 30263.808Sep 6
2019 (327 days)260.513260.045Apr 19260.884Jul 9
2018260.955260.014Apr 21261.968Sep 27
2017261.102260.105Apr 30262.507Jun 10
2016259.757259.202Apr 12260.344Dec 23
2015259.784259.591Dec 31259.954May 25
2014260.179259.696Apr 30260.692Jul 25
2013260.270259.927May 4260.734Oct 21
2012260.341259.751Apr 6261.098Jul 8
2011259.952259.472Apr 26260.754Sep 13
2010260.089259.643Aug 8260.715Jan 1
2009260.731259.700Apr 29262.103Sep 21
2008260.100259.748Apr 18261.226Aug 5
2007260.190259.695Apr 16261.046Jun 3
2006 (296 days)260.856260.063Dec 31261.738Aug 13
2005260.965259.446Feb 23263.563Oct 9
2004259.608259.294May 7260.005Oct 10
2003259.391259.115Apr 17259.660Jul 30
2002259.578259.383Apr 14259.880Jun 10
2001259.727259.529Nov 20260.468Jun 1
2000259.834259.330Apr 20260.480Jul 29
1999259.364258.935Apr 12259.908Jun 4
1998260.224259.313Dec 31261.709Jan 1
1997260.512259.579Feb 22262.161Nov 23
1996259.571259.082Mar 7260.101Jun 21
1995259.266258.850Jul 28259.453Nov 19
1994259.223258.816Apr 19259.884Jun 14
1993259.269259.015Dec 7259.563Jan 8
1992259.700259.356Sep 11260.475Jun 15
1991259.555259.048Apr 17260.097Jul 5
1990 (268 days)259.823259.524Jul 30260.211Sep 12
1989 (293 days)259.643259.356Apr 30260.183Jul 5
1988259.737259.449Dec 28260.033Jun 7
1987259.857259.631Oct 26260.249May 24
1986259.952259.504Jan 1260.482Jun 19
1985 (237 days)259.921259.389Nov 23260.640Jul 5
1984259.894259.521Oct 29260.289May 9
1983 (246 days)259.896259.466Apr 12260.389Oct 23
1982 (289 days)259.572259.181Mar 31259.972Jul 5
1981259.725259.191Sep 23260.173May 28
1980 (216 days)260.126259.864Jul 21260.401Oct 21
1979260.182259.775Sep 27260.671Jun 27
1978260.373260.025Apr 27261.012Nov 13
1977260.741260.122Apr 14261.494Aug 10
1976260.294259.690Jun 19261.101Oct 30
1975260.432259.866Dec 31261.122Jun 27
1974260.549259.757Mar 16261.387Aug 1
1973260.045259.839May 2260.421Jun 18
1972260.245259.958Sep 19260.845Jun 7
1971260.078259.150Apr 15261.299Oct 19
1970259.906259.525Apr 24260.641Aug 2
1969259.860259.379Aug 24260.470Oct 17
1968259.741259.498Aug 28260.153Jun 4
1967259.672259.370Jan 25260.357Jun 19
1966259.878259.406Dec 31260.741Jul 5
1965260.093259.629Apr 27260.674Jun 9
1964260.056259.574Apr 11260.787Oct 11
1963260.015259.598Jan 4260.668Jul 30
1962259.937259.485Jan 1261.436Jun 9
1961259.780259.397Oct 22260.598Jun 15
1960260.259259.415May 7261.378Aug 3
1959260.218259.385Apr 28261.272Aug 3
1958259.850259.367Apr 11260.202Oct 17
1957259.585258.882Apr 16260.287Aug 16
1956259.472258.937Oct 22260.205Jun 6
1955259.974259.531Mar 23260.656Jun 6
1954 (261 days)259.639259.150May 6260.659Sep 23
1953259.402259.104Feb 18259.754Jun 5
1952259.319259.196Sep 15259.504Jan 1
1951 (90 days)259.874259.525Dec 31260.250Oct 4

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

Monthly averages

MonthAverageLowestHighest
January259.819258.927261.709
February259.749258.858261.277
March259.696258.825261.092
April259.644258.811260.861
May259.968258.862262.254
June260.335259.110262.507
July260.325258.850262.986
August260.290258.872263.777
September260.188259.025263.808
October260.127258.937263.563
November260.016258.967263.080
December259.895258.961262.226

Download

Daily levels as CSV (25,601 rows; credit the original agencies listed below)