Country: Canada
United StatesCanadaUnited Kingdom

Greasewood Reservoir water level history

Daily records since 1962 · Level today: 29.354 m

Highest on record
30.477 m
Mar 16, 2017
Lowest on record
23.915 m
Sep 3, 1996
Today
29.354 m
Oct 23, 2026
Years of data
64
since 1962

In short

On average the lake is lowest in September (27.651 m) and highest in May (29.935 m).

Greasewood Reservoir level, all years

Loading chart…

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

Each year's lowest and highest level

24252729311962197019781986199420022010201820261962: lowest 27.18 m (1962-10-25), highest 28.42 m (1962-09-28), average 27.80 m, 2 days measured1963: lowest 24.83 m (1963-03-26), highest 28.85 m (1963-03-31), average 27.59 m, 6 days measured1964: lowest 25.91 m (1964-02-24), highest 29.83 m (1964-05-06), average 27.69 m, 37 days measured1965: lowest 28.47 m (1965-06-16), highest 29.72 m (1965-06-26), average 29.44 m, 23 days measured1966: lowest 24.69 m (1966-03-31), highest 29.15 m (1966-10-25), average 28.52 m, 33 days measured1967: lowest 24.38 m (1967-03-31), highest 29.69 m (1967-05-07), average 28.16 m, 28 days measured1968: lowest 25.97 m (1968-10-27), highest 29.90 m (1968-06-12), average 29.20 m, 43 days measured1969: lowest 27.60 m (1969-04-12), highest 28.91 m (1969-07-15), average 28.70 m, 28 days measured1970: lowest 25.45 m (1970-04-06), highest 29.92 m (1970-05-06), average 29.18 m, 38 days measured1971: lowest 27.68 m (1971-04-19), highest 29.96 m (1971-04-21), average 29.48 m, 28 days measured1972: lowest 26.49 m (1972-03-16), highest 29.95 m (1972-05-02), average 29.47 m, 34 days measured1973: lowest 26.49 m (1973-03-06), highest 29.46 m (1973-05-15), average 28.90 m, 45 days measured1974: lowest 24.38 m (1974-02-24), highest 29.95 m (1974-04-25), average 28.24 m, 48 days measured1975: lowest 24.38 m (1975-02-24), highest 29.95 m (1975-05-21), average 28.22 m, 42 days measured1976: lowest 24.38 m (1976-02-24), highest 29.78 m (1976-07-06), average 27.51 m, 46 days measured1977: lowest 24.03 m (1977-10-06), highest 29.19 m (1977-05-31), average 27.66 m, 40 days measured1978: lowest 24.69 m (1978-02-24), highest 29.95 m (1978-04-25), average 28.48 m, 44 days measured1979: lowest 24.45 m (1979-02-24), highest 29.85 m (1979-06-26), average 28.37 m, 42 days measured1980: lowest 25.19 m (1980-02-24), highest 29.91 m (1980-04-20), average 28.62 m, 43 days measured1981: lowest 28.33 m (1981-02-24), highest 29.84 m (1981-06-23), average 29.47 m, 41 days measured1982: lowest 25.62 m (1982-08-16), highest 30.02 m (1982-04-27), average 28.48 m, 40 days measured1983: lowest 24.38 m (1983-08-16), highest 30.03 m (1983-03-15), average 28.33 m, 42 days measured1984: lowest 24.25 m (1984-09-06), highest 29.75 m (1984-05-29), average 27.33 m, 42 days measured1985: lowest 24.66 m (1985-07-29), highest 29.99 m (1985-04-16), average 27.81 m, 56 days measured1986: lowest 27.51 m (1986-08-26), highest 30.08 m (1986-03-10), average 29.23 m, 53 days measured1987: lowest 25.04 m (1987-10-16), highest 30.23 m (1987-03-05), average 29.44 m, 32 days measured1988: lowest 24.46 m (1988-07-06), highest 30.09 m (1988-04-14), average 27.13 m, 46 days measured1989: lowest 26.24 m (1989-03-17), highest 30.02 m (1989-06-28), average 29.11 m, 52 days measured1990: lowest 27.75 m (1990-10-31), highest 30.19 m (1990-03-15), average 29.28 m, 55 days measured1991: lowest 24.44 m (1991-08-07), highest 30.20 m (1991-05-06), average 27.98 m, 46 days measured1992: lowest 24.44 m (1992-05-27), highest 27.59 m (1992-04-15), average 26.08 m, 50 days measured1993: lowest 27.17 m (1993-03-08), highest 30.21 m (1993-04-05), average 29.10 m, 44 days measured1994: lowest 24.50 m (1994-08-27), highest 30.10 m (1994-03-27), average 27.41 m, 37 days measured1995: lowest 26.29 m (1995-09-01), highest 28.10 m (1995-05-11), average 26.92 m, 38 days measured1996: lowest 23.92 m (1996-09-03), highest 30.12 m (1996-05-11), average 28.03 m, 38 days measured1997: lowest 27.58 m (1997-02-24), highest 30.16 m (1997-06-11), average 28.84 m, 32 days measured1998: lowest 25.77 m (1998-06-23), highest 29.44 m (1998-05-26), average 28.33 m, 34 days measured1999: lowest 25.15 m (1999-08-16), highest 30.16 m (1999-05-16), average 28.48 m, 260 days measured2000: lowest 25.16 m (2000-08-28), highest 29.22 m (2000-06-18), average 27.15 m, 253 days measured2001: lowest 25.38 m (2001-06-04), highest 28.32 m (2001-05-05), average 26.37 m, 270 days measured2002: lowest 26.46 m (2002-02-20), highest 30.27 m (2002-06-11), average 28.93 m, 261 days measured2003: lowest 29.04 m (2003-10-11), highest 30.26 m (2003-03-22), average 29.78 m, 260 days measured2004: lowest 24.88 m (2004-08-01), highest 30.28 m (2004-03-31), average 28.61 m, 230 days measured2005: lowest 26.01 m (2005-08-31), highest 30.27 m (2005-06-07), average 28.86 m, 253 days measured2006: lowest 26.45 m (2006-08-30), highest 30.34 m (2006-03-31), average 28.72 m, 253 days measured2007: lowest 27.54 m (2007-02-24), highest 30.22 m (2007-04-22), average 29.08 m, 256 days measured2008: lowest 25.64 m (2008-07-10), highest 30.25 m (2008-04-30), average 27.76 m, 253 days measured2009: lowest 27.01 m (2009-02-26), highest 30.09 m (2009-06-11), average 28.26 m, 252 days measured2010: lowest 28.15 m (2010-03-01), highest 30.36 m (2010-06-18), average 29.70 m, 249 days measured2011: lowest 27.06 m (2011-07-17), highest 30.41 m (2011-04-12), average 28.64 m, 245 days measured2012: lowest 28.07 m (2012-09-22), highest 30.26 m (2012-06-20), average 29.34 m, 245 days measured2013: lowest 27.82 m (2013-08-10), highest 30.27 m (2013-03-31), average 29.24 m, 245 days measured2014: lowest 28.11 m (2014-08-14), highest 30.35 m (2014-04-08), average 29.29 m, 245 days measured2015: lowest 27.62 m (2015-07-08), highest 30.31 m (2015-03-12), average 28.94 m, 245 days measured2016: lowest 27.72 m (2016-07-10), highest 30.23 m (2016-03-07), average 29.42 m, 280 days measured2017: lowest 27.68 m (2017-09-16), highest 30.48 m (2017-03-16), average 29.01 m, 252 days measured2018: lowest 27.04 m (2018-09-05), highest 30.33 m (2018-04-19), average 28.28 m, 266 days measured2019: lowest 27.10 m (2019-08-06), highest 30.21 m (2019-05-19), average 28.50 m, 253 days measured2020: lowest 27.03 m (2020-09-06), highest 30.33 m (2020-04-21), average 28.62 m, 250 days measured2021: lowest 27.81 m (2021-08-08), highest 30.32 m (2021-05-25), average 28.98 m, 251 days measured2022: lowest 28.27 m (2022-02-16), highest 30.32 m (2022-06-21), average 29.49 m, 246 days measured2023: lowest 28.15 m (2023-08-20), highest 30.27 m (2023-04-27), average 29.12 m, 253 days measured2024: lowest 29.05 m (2024-02-20), highest 30.30 m (2024-04-03), average 29.79 m, 259 days measured2025: lowest 29.26 m (2025-10-02), highest 30.31 m (2025-04-08), average 29.81 m, 252 days measured2026: lowest 29.33 m (2026-10-01), highest 29.35 m (2026-10-21), average 29.34 m, 30 days measured
2425272931196219781994201020261962: lowest 27.18 m (1962-10-25), highest 28.42 m (1962-09-28), average 27.80 m, 2 days measured1963: lowest 24.83 m (1963-03-26), highest 28.85 m (1963-03-31), average 27.59 m, 6 days measured1964: lowest 25.91 m (1964-02-24), highest 29.83 m (1964-05-06), average 27.69 m, 37 days measured1965: lowest 28.47 m (1965-06-16), highest 29.72 m (1965-06-26), average 29.44 m, 23 days measured1966: lowest 24.69 m (1966-03-31), highest 29.15 m (1966-10-25), average 28.52 m, 33 days measured1967: lowest 24.38 m (1967-03-31), highest 29.69 m (1967-05-07), average 28.16 m, 28 days measured1968: lowest 25.97 m (1968-10-27), highest 29.90 m (1968-06-12), average 29.20 m, 43 days measured1969: lowest 27.60 m (1969-04-12), highest 28.91 m (1969-07-15), average 28.70 m, 28 days measured1970: lowest 25.45 m (1970-04-06), highest 29.92 m (1970-05-06), average 29.18 m, 38 days measured1971: lowest 27.68 m (1971-04-19), highest 29.96 m (1971-04-21), average 29.48 m, 28 days measured1972: lowest 26.49 m (1972-03-16), highest 29.95 m (1972-05-02), average 29.47 m, 34 days measured1973: lowest 26.49 m (1973-03-06), highest 29.46 m (1973-05-15), average 28.90 m, 45 days measured1974: lowest 24.38 m (1974-02-24), highest 29.95 m (1974-04-25), average 28.24 m, 48 days measured1975: lowest 24.38 m (1975-02-24), highest 29.95 m (1975-05-21), average 28.22 m, 42 days measured1976: lowest 24.38 m (1976-02-24), highest 29.78 m (1976-07-06), average 27.51 m, 46 days measured1977: lowest 24.03 m (1977-10-06), highest 29.19 m (1977-05-31), average 27.66 m, 40 days measured1978: lowest 24.69 m (1978-02-24), highest 29.95 m (1978-04-25), average 28.48 m, 44 days measured1979: lowest 24.45 m (1979-02-24), highest 29.85 m (1979-06-26), average 28.37 m, 42 days measured1980: lowest 25.19 m (1980-02-24), highest 29.91 m (1980-04-20), average 28.62 m, 43 days measured1981: lowest 28.33 m (1981-02-24), highest 29.84 m (1981-06-23), average 29.47 m, 41 days measured1982: lowest 25.62 m (1982-08-16), highest 30.02 m (1982-04-27), average 28.48 m, 40 days measured1983: lowest 24.38 m (1983-08-16), highest 30.03 m (1983-03-15), average 28.33 m, 42 days measured1984: lowest 24.25 m (1984-09-06), highest 29.75 m (1984-05-29), average 27.33 m, 42 days measured1985: lowest 24.66 m (1985-07-29), highest 29.99 m (1985-04-16), average 27.81 m, 56 days measured1986: lowest 27.51 m (1986-08-26), highest 30.08 m (1986-03-10), average 29.23 m, 53 days measured1987: lowest 25.04 m (1987-10-16), highest 30.23 m (1987-03-05), average 29.44 m, 32 days measured1988: lowest 24.46 m (1988-07-06), highest 30.09 m (1988-04-14), average 27.13 m, 46 days measured1989: lowest 26.24 m (1989-03-17), highest 30.02 m (1989-06-28), average 29.11 m, 52 days measured1990: lowest 27.75 m (1990-10-31), highest 30.19 m (1990-03-15), average 29.28 m, 55 days measured1991: lowest 24.44 m (1991-08-07), highest 30.20 m (1991-05-06), average 27.98 m, 46 days measured1992: lowest 24.44 m (1992-05-27), highest 27.59 m (1992-04-15), average 26.08 m, 50 days measured1993: lowest 27.17 m (1993-03-08), highest 30.21 m (1993-04-05), average 29.10 m, 44 days measured1994: lowest 24.50 m (1994-08-27), highest 30.10 m (1994-03-27), average 27.41 m, 37 days measured1995: lowest 26.29 m (1995-09-01), highest 28.10 m (1995-05-11), average 26.92 m, 38 days measured1996: lowest 23.92 m (1996-09-03), highest 30.12 m (1996-05-11), average 28.03 m, 38 days measured1997: lowest 27.58 m (1997-02-24), highest 30.16 m (1997-06-11), average 28.84 m, 32 days measured1998: lowest 25.77 m (1998-06-23), highest 29.44 m (1998-05-26), average 28.33 m, 34 days measured1999: lowest 25.15 m (1999-08-16), highest 30.16 m (1999-05-16), average 28.48 m, 260 days measured2000: lowest 25.16 m (2000-08-28), highest 29.22 m (2000-06-18), average 27.15 m, 253 days measured2001: lowest 25.38 m (2001-06-04), highest 28.32 m (2001-05-05), average 26.37 m, 270 days measured2002: lowest 26.46 m (2002-02-20), highest 30.27 m (2002-06-11), average 28.93 m, 261 days measured2003: lowest 29.04 m (2003-10-11), highest 30.26 m (2003-03-22), average 29.78 m, 260 days measured2004: lowest 24.88 m (2004-08-01), highest 30.28 m (2004-03-31), average 28.61 m, 230 days measured2005: lowest 26.01 m (2005-08-31), highest 30.27 m (2005-06-07), average 28.86 m, 253 days measured2006: lowest 26.45 m (2006-08-30), highest 30.34 m (2006-03-31), average 28.72 m, 253 days measured2007: lowest 27.54 m (2007-02-24), highest 30.22 m (2007-04-22), average 29.08 m, 256 days measured2008: lowest 25.64 m (2008-07-10), highest 30.25 m (2008-04-30), average 27.76 m, 253 days measured2009: lowest 27.01 m (2009-02-26), highest 30.09 m (2009-06-11), average 28.26 m, 252 days measured2010: lowest 28.15 m (2010-03-01), highest 30.36 m (2010-06-18), average 29.70 m, 249 days measured2011: lowest 27.06 m (2011-07-17), highest 30.41 m (2011-04-12), average 28.64 m, 245 days measured2012: lowest 28.07 m (2012-09-22), highest 30.26 m (2012-06-20), average 29.34 m, 245 days measured2013: lowest 27.82 m (2013-08-10), highest 30.27 m (2013-03-31), average 29.24 m, 245 days measured2014: lowest 28.11 m (2014-08-14), highest 30.35 m (2014-04-08), average 29.29 m, 245 days measured2015: lowest 27.62 m (2015-07-08), highest 30.31 m (2015-03-12), average 28.94 m, 245 days measured2016: lowest 27.72 m (2016-07-10), highest 30.23 m (2016-03-07), average 29.42 m, 280 days measured2017: lowest 27.68 m (2017-09-16), highest 30.48 m (2017-03-16), average 29.01 m, 252 days measured2018: lowest 27.04 m (2018-09-05), highest 30.33 m (2018-04-19), average 28.28 m, 266 days measured2019: lowest 27.10 m (2019-08-06), highest 30.21 m (2019-05-19), average 28.50 m, 253 days measured2020: lowest 27.03 m (2020-09-06), highest 30.33 m (2020-04-21), average 28.62 m, 250 days measured2021: lowest 27.81 m (2021-08-08), highest 30.32 m (2021-05-25), average 28.98 m, 251 days measured2022: lowest 28.27 m (2022-02-16), highest 30.32 m (2022-06-21), average 29.49 m, 246 days measured2023: lowest 28.15 m (2023-08-20), highest 30.27 m (2023-04-27), average 29.12 m, 253 days measured2024: lowest 29.05 m (2024-02-20), highest 30.30 m (2024-04-03), average 29.79 m, 259 days measured2025: lowest 29.26 m (2025-10-02), highest 30.31 m (2025-04-08), average 29.81 m, 252 days measured2026: lowest 29.33 m (2026-10-01), highest 29.35 m (2026-10-21), average 29.34 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.

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)29.33529.326Oct 129.351Oct 21
2025 (252 days)29.80929.255Oct 230.311Apr 8
2024 (259 days)29.78729.050Feb 2030.301Apr 3
2023 (253 days)29.12128.150Aug 2030.275Apr 27
2022 (246 days)29.49428.266Feb 1630.323Jun 21
2021 (251 days)28.98027.805Aug 830.322May 25
2020 (250 days)28.62427.030Sep 630.333Apr 21
2019 (253 days)28.50227.100Aug 630.207May 19
2018 (266 days)28.28427.044Sep 530.330Apr 19
2017 (252 days)29.00927.677Sep 1630.477Mar 16
2016 (280 days)29.42127.719Jul 1030.228Mar 7
2015 (245 days)28.93727.625Jul 830.307Mar 12
2014 (245 days)29.29328.115Aug 1430.352Apr 8
2013 (245 days)29.23727.824Aug 1030.267Mar 31
2012 (245 days)29.34128.073Sep 2230.264Jun 20
2011 (245 days)28.63627.056Jul 1730.415Apr 12
2010 (249 days)29.69928.153Mar 130.363Jun 18
2009 (252 days)28.26227.007Feb 2630.090Jun 11
2008 (253 days)27.75525.640Jul 1030.248Apr 30
2007 (256 days)29.08327.537Feb 2430.220Apr 22
2006 (253 days)28.72026.451Aug 3030.341Mar 31
2005 (253 days)28.86226.014Aug 3130.273Jun 7
2004 (230 days)28.60924.883Aug 130.277Mar 31
2003 (260 days)29.78229.039Oct 1130.257Mar 22
2002 (261 days)28.92826.463Feb 2030.272Jun 11
2001 (270 days)26.37225.380Jun 428.323May 5
2000 (253 days)27.15025.160Aug 2829.223Jun 18
1999 (260 days)28.47625.148Aug 1630.162May 16
1998 (34 days)28.32825.766Jun 2329.438May 26
1997 (32 days)28.83927.578Feb 2430.160Jun 11
1996 (38 days)28.03123.915Sep 330.125May 11
1995 (38 days)26.92226.292Sep 128.100May 11
1994 (37 days)27.40824.500Aug 2730.100Mar 27
1993 (44 days)29.10327.175Mar 830.207Apr 5
1992 (50 days)26.07924.440May 2727.591Apr 15
1991 (46 days)27.98324.445Aug 730.200May 6
1990 (55 days)29.27627.755Oct 3130.185Mar 15
1989 (52 days)29.10726.236Mar 1730.024Jun 28
1988 (46 days)27.13424.460Jul 630.086Apr 14
1987 (32 days)29.43825.040Oct 1630.230Mar 5
1986 (53 days)29.23227.507Aug 2630.077Mar 10
1985 (56 days)27.80624.660Jul 2929.993Apr 16
1984 (42 days)27.32824.250Sep 629.751May 29
1983 (42 days)28.32824.384Aug 1630.035Mar 15
1982 (40 days)28.47825.625Aug 1630.020Apr 27
1981 (41 days)29.47128.331Feb 2429.838Jun 23
1980 (43 days)28.62325.185Feb 2429.906Apr 20
1979 (42 days)28.37324.450Feb 2429.845Jun 26
1978 (44 days)28.48224.689Feb 2429.950Apr 25
1977 (40 days)27.66324.027Oct 629.191May 31
1976 (46 days)27.51024.384Feb 2429.779Jul 6
1975 (42 days)28.22524.384Feb 2429.950May 21
1974 (48 days)28.24024.384Feb 2429.950Apr 25
1973 (45 days)28.89626.487Mar 629.462May 15
1972 (34 days)29.47426.487Mar 1629.953May 2
1971 (28 days)29.48427.676Apr 1929.962Apr 21
1970 (38 days)29.18325.451Apr 629.919May 6
1969 (28 days)28.69927.603Apr 1228.913Jul 15
1968 (43 days)29.19625.969Oct 2729.901Jun 12
1967 (28 days)28.16424.384Mar 3129.688May 7
1966 (33 days)28.52224.689Mar 3129.154Oct 25
1965 (23 days)29.44028.468Jun 1629.718Jun 26
1964 (37 days)27.69025.908Feb 2429.828May 6
1963 (6 days)27.59324.829Mar 2628.852Mar 31
1962 (2 days)27.80127.182Oct 2528.420Sep 28

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

Monthly averages

MonthAverageLowestHighest
February27.83524.38430.090
March28.81424.38430.477
April29.75124.38430.415
May29.93524.38430.322
June29.67724.84030.363
July28.64824.46030.242
August27.96324.28030.092
September27.65123.91530.050
October27.72723.94529.840
November28.01924.02729.716

Download

Daily levels as CSV (8,295 rows; credit the original agencies listed below)