Country: Canada
United StatesCanadaUnited Kingdom

Roughbark Reservoir water level history

Daily records since 1959 · Level today: 566.011 m

Highest on record
568.018 m
Apr 22, 1979
Lowest on record
560.088 m
Feb 28, 1971
Today
566.011 m
Oct 23, 2026
Years of data
68
since 1959

In short

Across 6 complete years, 2021 had the lowest average level (564.068 m) and 2025 the highest (565.556 m).

On average the lake is lowest in January (564.532 m) and highest in May (566.172 m).

Roughbark Reservoir level, all years

Loading chart…

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

Each year's lowest and highest level

5605625645665681959196719751983199119992007201520261959: lowest 564.62 m (1959-09-03), highest 565.41 m (1959-04-04), average 565.30 m, 18 days measured1960: lowest 565.20 m (1960-03-23), highest 567.11 m (1960-04-24), average 566.41 m, 30 days measured1961: lowest 564.76 m (1961-10-27), highest 566.05 m (1961-04-14), average 565.52 m, 39 days measured1962: lowest 564.51 m (1962-01-04), highest 565.77 m (1962-04-21), average 565.05 m, 79 days measured1963: lowest 564.95 m (1963-01-08), highest 567.04 m (1963-06-21), average 566.28 m, 72 days measured1964: lowest 566.10 m (1964-11-03), highest 567.24 m (1964-04-06), average 566.67 m, 71 days measured1965: lowest 566.08 m (1965-03-30), highest 567.33 m (1965-05-10), average 566.97 m, 66 days measured1966: lowest 566.27 m (1966-10-28), highest 567.23 m (1966-03-23), average 566.77 m, 69 days measured1967: lowest 565.17 m (1967-10-06), highest 567.35 m (1967-04-14), average 566.31 m, 67 days measured1968: lowest 563.91 m (1968-08-13), highest 565.30 m (1968-03-08), average 564.43 m, 109 days measured1969: lowest 564.37 m (1969-11-20), highest 567.04 m (1969-05-08), average 565.39 m, 127 days measured1970: lowest 564.38 m (1970-01-06), highest 567.36 m (1970-05-08), average 565.66 m, 148 days measured1971: lowest 560.09 m (1971-02-28), highest 567.51 m (1971-04-11), average 565.44 m, 119 days measured1972: lowest 565.15 m (1972-01-31), highest 567.43 m (1972-03-24), average 566.48 m, 205 days measured1973: lowest 564.83 m (1973-11-21), highest 565.83 m (1973-04-05), average 565.41 m, 144 days measured1974: lowest 563.15 m (1974-04-09), highest 567.86 m (1974-04-19), average 566.45 m, 59 days measured1975: lowest 563.16 m (1975-12-31), highest 567.86 m (1975-04-22), average 565.79 m, 188 days measured1976: lowest 562.60 m (1976-03-03), highest 567.81 m (1976-04-06), average 566.15 m, 256 days measured1977: lowest 565.10 m (1977-11-28), highest 566.02 m (1977-03-08), average 565.66 m, 280 days measured1978: lowest 565.09 m (1978-03-01), highest 567.71 m (1978-07-11), average 566.80 m, 196 days measured1979: lowest 565.77 m (1979-08-30), highest 568.02 m (1979-04-22), average 566.44 m, 257 days measured1980: lowest 565.15 m (1980-12-02), highest 566.65 m (1980-04-21), average 565.76 m, 286 days measured1981: lowest 563.89 m (1981-11-12), highest 565.27 m (1981-03-31), average 564.63 m, 309 days measured1982: lowest 563.91 m (1982-02-23), highest 567.53 m (1982-04-20), average 566.34 m, 255 days measured1983: lowest 565.85 m (1983-11-30), highest 567.48 m (1983-04-12), average 566.64 m, 254 days measured1984: lowest 564.46 m (1984-10-15), highest 565.95 m (1984-04-06), average 565.24 m, 256 days measured1985: lowest 564.31 m (1985-12-03), highest 565.35 m (1985-04-20), average 564.80 m, 257 days measured1986: lowest 564.31 m (1986-02-04), highest 565.90 m (1986-05-26), average 565.58 m, 262 days measured1987: lowest 565.61 m (1987-01-01), highest 567.25 m (1987-04-07), average 566.54 m, 253 days measured1988: lowest 563.93 m (1988-11-29), highest 566.01 m (1988-03-25), average 565.14 m, 257 days measured1989: lowest 563.33 m (1989-12-31), highest 564.21 m (1989-04-25), average 563.84 m, 257 days measured1990: lowest 562.43 m (1990-12-31), highest 563.64 m (1990-07-27), average 563.04 m, 165 days measured1991: lowest 561.95 m (1991-12-31), highest 562.63 m (1991-04-30), average 562.27 m, 170 days measured1992: lowest 561.24 m (1992-10-30), highest 562.14 m (1992-04-25), average 561.73 m, 252 days measured1993: lowest 561.08 m (1993-12-31), highest 561.40 m (1993-07-31), average 561.26 m, 17 days measured1994: lowest 561.08 m (1994-03-01), highest 567.38 m (1994-04-04), average 566.34 m, 247 days measured1995: lowest 566.18 m (1995-01-05), highest 566.52 m (1995-05-28), average 566.39 m, 256 days measured1996: lowest 566.30 m (1996-01-01), highest 567.51 m (1996-04-11), average 567.03 m, 252 days measured1997: lowest 566.80 m (1997-01-01), highest 567.79 m (1997-04-01), average 567.06 m, 247 days measured1998: lowest 566.78 m (1998-02-24), highest 567.22 m (1998-04-12), average 567.00 m, 252 days measured1999: lowest 566.90 m (1999-03-01), highest 567.87 m (1999-03-28), average 567.16 m, 248 days measured2000: lowest 566.85 m (2000-05-31), highest 567.09 m (2000-07-31), average 566.93 m, 20 days measured2001: lowest 566.68 m (2001-12-31), highest 567.55 m (2001-03-31), average 567.05 m, 21 days measured2002: lowest 566.37 m (2002-11-05), highest 566.79 m (2002-04-30), average 566.62 m, 18 days measured2003: lowest 566.38 m (2003-02-28), highest 567.47 m (2003-03-21), average 566.94 m, 18 days measured2004: lowest 566.53 m (2004-03-01), highest 567.49 m (2004-06-01), average 567.02 m, 19 days measured2005: lowest 566.89 m (2005-10-31), highest 567.58 m (2005-03-31), average 567.09 m, 16 days measured2006: lowest 566.31 m (2006-11-07), highest 566.91 m (2006-05-05), average 566.68 m, 17 days measured2007: lowest 566.30 m (2007-01-09), highest 567.06 m (2007-04-04), average 566.76 m, 19 days measured2008: lowest 566.06 m (2008-10-31), highest 566.59 m (2008-03-31), average 566.37 m, 17 days measured2009: lowest 566.07 m (2009-01-13), highest 567.62 m (2009-04-15), average 566.89 m, 19 days measured2010: lowest 566.96 m (2010-03-10), highest 567.51 m (2010-03-31), average 567.28 m, 15 days measured2011: lowest 564.62 m (2011-10-31), highest 568.00 m (2011-04-13), average 566.50 m, 13 days measured2012: lowest 564.39 m (2012-10-07), highest 564.93 m (2012-05-31), average 564.48 m, 59 days measured2013: lowest 564.42 m (2013-03-01), highest 567.93 m (2013-05-01), average 565.85 m, 245 days measured2014: lowest 564.93 m (2014-10-31), highest 565.72 m (2014-06-10), average 565.24 m, 245 days measured2015: lowest 564.93 m (2015-03-05), highest 567.70 m (2015-03-15), average 566.10 m, 245 days measured2016: lowest 564.48 m (2016-10-13), highest 564.97 m (2016-03-01), average 564.77 m, 245 days measured2017: lowest 564.55 m (2017-02-21), highest 567.59 m (2017-03-25), average 566.43 m, 253 days measured2018: lowest 564.65 m (2018-11-07), highest 566.15 m (2018-05-25), average 565.39 m, 267 days measured2019: lowest 564.67 m (2019-03-15), highest 566.05 m (2019-04-20), average 565.40 m, 246 days measured2020: lowest 564.33 m (2020-12-24), highest 565.03 m (2020-04-08), average 564.72 m, 366 days measured2021: lowest 563.67 m (2021-12-25), highest 564.37 m (2021-04-17), average 564.07 m, 365 days measured2022: lowest 563.65 m (2022-01-20), highest 567.60 m (2022-05-19), average 565.03 m, 365 days measured2023: lowest 563.73 m (2023-01-12), highest 566.48 m (2023-04-14), average 564.46 m, 365 days measured2024: lowest 564.15 m (2024-01-26), highest 565.11 m (2024-04-10), average 564.69 m, 366 days measured2025: lowest 564.59 m (2025-02-04), highest 566.49 m (2025-03-30), average 565.56 m, 365 days measured2026: lowest 566.01 m (2026-10-21), highest 566.07 m (2026-09-26), average 566.03 m, 30 days measured
560562564566568195919761993201020261959: lowest 564.62 m (1959-09-03), highest 565.41 m (1959-04-04), average 565.30 m, 18 days measured1960: lowest 565.20 m (1960-03-23), highest 567.11 m (1960-04-24), average 566.41 m, 30 days measured1961: lowest 564.76 m (1961-10-27), highest 566.05 m (1961-04-14), average 565.52 m, 39 days measured1962: lowest 564.51 m (1962-01-04), highest 565.77 m (1962-04-21), average 565.05 m, 79 days measured1963: lowest 564.95 m (1963-01-08), highest 567.04 m (1963-06-21), average 566.28 m, 72 days measured1964: lowest 566.10 m (1964-11-03), highest 567.24 m (1964-04-06), average 566.67 m, 71 days measured1965: lowest 566.08 m (1965-03-30), highest 567.33 m (1965-05-10), average 566.97 m, 66 days measured1966: lowest 566.27 m (1966-10-28), highest 567.23 m (1966-03-23), average 566.77 m, 69 days measured1967: lowest 565.17 m (1967-10-06), highest 567.35 m (1967-04-14), average 566.31 m, 67 days measured1968: lowest 563.91 m (1968-08-13), highest 565.30 m (1968-03-08), average 564.43 m, 109 days measured1969: lowest 564.37 m (1969-11-20), highest 567.04 m (1969-05-08), average 565.39 m, 127 days measured1970: lowest 564.38 m (1970-01-06), highest 567.36 m (1970-05-08), average 565.66 m, 148 days measured1971: lowest 560.09 m (1971-02-28), highest 567.51 m (1971-04-11), average 565.44 m, 119 days measured1972: lowest 565.15 m (1972-01-31), highest 567.43 m (1972-03-24), average 566.48 m, 205 days measured1973: lowest 564.83 m (1973-11-21), highest 565.83 m (1973-04-05), average 565.41 m, 144 days measured1974: lowest 563.15 m (1974-04-09), highest 567.86 m (1974-04-19), average 566.45 m, 59 days measured1975: lowest 563.16 m (1975-12-31), highest 567.86 m (1975-04-22), average 565.79 m, 188 days measured1976: lowest 562.60 m (1976-03-03), highest 567.81 m (1976-04-06), average 566.15 m, 256 days measured1977: lowest 565.10 m (1977-11-28), highest 566.02 m (1977-03-08), average 565.66 m, 280 days measured1978: lowest 565.09 m (1978-03-01), highest 567.71 m (1978-07-11), average 566.80 m, 196 days measured1979: lowest 565.77 m (1979-08-30), highest 568.02 m (1979-04-22), average 566.44 m, 257 days measured1980: lowest 565.15 m (1980-12-02), highest 566.65 m (1980-04-21), average 565.76 m, 286 days measured1981: lowest 563.89 m (1981-11-12), highest 565.27 m (1981-03-31), average 564.63 m, 309 days measured1982: lowest 563.91 m (1982-02-23), highest 567.53 m (1982-04-20), average 566.34 m, 255 days measured1983: lowest 565.85 m (1983-11-30), highest 567.48 m (1983-04-12), average 566.64 m, 254 days measured1984: lowest 564.46 m (1984-10-15), highest 565.95 m (1984-04-06), average 565.24 m, 256 days measured1985: lowest 564.31 m (1985-12-03), highest 565.35 m (1985-04-20), average 564.80 m, 257 days measured1986: lowest 564.31 m (1986-02-04), highest 565.90 m (1986-05-26), average 565.58 m, 262 days measured1987: lowest 565.61 m (1987-01-01), highest 567.25 m (1987-04-07), average 566.54 m, 253 days measured1988: lowest 563.93 m (1988-11-29), highest 566.01 m (1988-03-25), average 565.14 m, 257 days measured1989: lowest 563.33 m (1989-12-31), highest 564.21 m (1989-04-25), average 563.84 m, 257 days measured1990: lowest 562.43 m (1990-12-31), highest 563.64 m (1990-07-27), average 563.04 m, 165 days measured1991: lowest 561.95 m (1991-12-31), highest 562.63 m (1991-04-30), average 562.27 m, 170 days measured1992: lowest 561.24 m (1992-10-30), highest 562.14 m (1992-04-25), average 561.73 m, 252 days measured1993: lowest 561.08 m (1993-12-31), highest 561.40 m (1993-07-31), average 561.26 m, 17 days measured1994: lowest 561.08 m (1994-03-01), highest 567.38 m (1994-04-04), average 566.34 m, 247 days measured1995: lowest 566.18 m (1995-01-05), highest 566.52 m (1995-05-28), average 566.39 m, 256 days measured1996: lowest 566.30 m (1996-01-01), highest 567.51 m (1996-04-11), average 567.03 m, 252 days measured1997: lowest 566.80 m (1997-01-01), highest 567.79 m (1997-04-01), average 567.06 m, 247 days measured1998: lowest 566.78 m (1998-02-24), highest 567.22 m (1998-04-12), average 567.00 m, 252 days measured1999: lowest 566.90 m (1999-03-01), highest 567.87 m (1999-03-28), average 567.16 m, 248 days measured2000: lowest 566.85 m (2000-05-31), highest 567.09 m (2000-07-31), average 566.93 m, 20 days measured2001: lowest 566.68 m (2001-12-31), highest 567.55 m (2001-03-31), average 567.05 m, 21 days measured2002: lowest 566.37 m (2002-11-05), highest 566.79 m (2002-04-30), average 566.62 m, 18 days measured2003: lowest 566.38 m (2003-02-28), highest 567.47 m (2003-03-21), average 566.94 m, 18 days measured2004: lowest 566.53 m (2004-03-01), highest 567.49 m (2004-06-01), average 567.02 m, 19 days measured2005: lowest 566.89 m (2005-10-31), highest 567.58 m (2005-03-31), average 567.09 m, 16 days measured2006: lowest 566.31 m (2006-11-07), highest 566.91 m (2006-05-05), average 566.68 m, 17 days measured2007: lowest 566.30 m (2007-01-09), highest 567.06 m (2007-04-04), average 566.76 m, 19 days measured2008: lowest 566.06 m (2008-10-31), highest 566.59 m (2008-03-31), average 566.37 m, 17 days measured2009: lowest 566.07 m (2009-01-13), highest 567.62 m (2009-04-15), average 566.89 m, 19 days measured2010: lowest 566.96 m (2010-03-10), highest 567.51 m (2010-03-31), average 567.28 m, 15 days measured2011: lowest 564.62 m (2011-10-31), highest 568.00 m (2011-04-13), average 566.50 m, 13 days measured2012: lowest 564.39 m (2012-10-07), highest 564.93 m (2012-05-31), average 564.48 m, 59 days measured2013: lowest 564.42 m (2013-03-01), highest 567.93 m (2013-05-01), average 565.85 m, 245 days measured2014: lowest 564.93 m (2014-10-31), highest 565.72 m (2014-06-10), average 565.24 m, 245 days measured2015: lowest 564.93 m (2015-03-05), highest 567.70 m (2015-03-15), average 566.10 m, 245 days measured2016: lowest 564.48 m (2016-10-13), highest 564.97 m (2016-03-01), average 564.77 m, 245 days measured2017: lowest 564.55 m (2017-02-21), highest 567.59 m (2017-03-25), average 566.43 m, 253 days measured2018: lowest 564.65 m (2018-11-07), highest 566.15 m (2018-05-25), average 565.39 m, 267 days measured2019: lowest 564.67 m (2019-03-15), highest 566.05 m (2019-04-20), average 565.40 m, 246 days measured2020: lowest 564.33 m (2020-12-24), highest 565.03 m (2020-04-08), average 564.72 m, 366 days measured2021: lowest 563.67 m (2021-12-25), highest 564.37 m (2021-04-17), average 564.07 m, 365 days measured2022: lowest 563.65 m (2022-01-20), highest 567.60 m (2022-05-19), average 565.03 m, 365 days measured2023: lowest 563.73 m (2023-01-12), highest 566.48 m (2023-04-14), average 564.46 m, 365 days measured2024: lowest 564.15 m (2024-01-26), highest 565.11 m (2024-04-10), average 564.69 m, 366 days measured2025: lowest 564.59 m (2025-02-04), highest 566.49 m (2025-03-30), average 565.56 m, 365 days measured2026: lowest 566.01 m (2026-10-21), highest 566.07 m (2026-09-26), average 566.03 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.

  • 2022563.650 m on Jan 20
  • 2021563.670 m on Dec 25
  • 2023563.729 m on Jan 12
  • 2024564.147 m on Jan 26
  • 2020564.330 m on Dec 24

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)566.035566.012Oct 21566.065Sep 26
2025565.556564.585Feb 4566.485Mar 30
2024564.685564.147Jan 26565.114Apr 10
2023564.456563.729Jan 12566.478Apr 14
2022565.026563.650Jan 20567.602May 19
2021564.068563.670Dec 25564.368Apr 17
2020564.716564.330Dec 24565.030Apr 8
2019 (246 days)565.401564.665Mar 15566.053Apr 20
2018 (267 days)565.395564.650Nov 7566.149May 25
2017 (253 days)566.427564.552Feb 21567.586Mar 25
2016 (245 days)564.771564.484Oct 13564.972Mar 1
2015 (245 days)566.096564.932Mar 5567.697Mar 15
2014 (245 days)565.243564.926Oct 31565.722Jun 10
2013 (245 days)565.848564.423Mar 1567.926May 1
2012 (59 days)564.479564.385Oct 7564.931May 31
2011 (13 days)566.496564.617Oct 31568.002Apr 13
2010 (15 days)567.279566.959Mar 10567.510Mar 31
2009 (19 days)566.891566.070Jan 13567.616Apr 15
2008 (17 days)566.374566.064Oct 31566.591Mar 31
2007 (19 days)566.757566.304Jan 9567.056Apr 4
2006 (17 days)566.683566.306Nov 7566.905May 5
2005 (16 days)567.093566.890Oct 31567.575Mar 31
2004 (19 days)567.016566.530Mar 1567.487Jun 1
2003 (18 days)566.941566.384Feb 28567.474Mar 21
2002 (18 days)566.620566.371Nov 5566.785Apr 30
2001 (21 days)567.047566.675Dec 31567.550Mar 31
2000 (20 days)566.925566.850May 31567.090Jul 31
1999 (248 days)567.164566.900Mar 1567.874Mar 28
1998 (252 days)567.004566.782Feb 24567.221Apr 12
1997 (247 days)567.064566.800Jan 1567.793Apr 1
1996 (252 days)567.035566.300Jan 1567.510Apr 11
1995 (256 days)566.386566.180Jan 5566.523May 28
1994 (247 days)566.340561.080Mar 1567.382Apr 4
1993 (17 days)561.257561.080Dec 31561.400Jul 31
1992 (252 days)561.726561.238Oct 30562.135Apr 25
1991 (170 days)562.272561.950Dec 31562.630Apr 30
1990 (165 days)563.036562.425Dec 31563.644Jul 27
1989 (257 days)563.837563.325Dec 31564.208Apr 25
1988 (257 days)565.142563.927Nov 29566.005Mar 25
1987 (253 days)566.537565.606Jan 1567.248Apr 7
1986 (262 days)565.584564.309Feb 4565.899May 26
1985 (257 days)564.797564.314Dec 3565.348Apr 20
1984 (256 days)565.240564.463Oct 15565.949Apr 6
1983 (254 days)566.643565.850Nov 30567.476Apr 12
1982 (255 days)566.337563.908Feb 23567.525Apr 20
1981 (309 days)564.630563.894Nov 12565.265Mar 31
1980 (286 days)565.764565.149Dec 2566.646Apr 21
1979 (257 days)566.437565.766Aug 30568.018Apr 22
1978 (196 days)566.802565.093Mar 1567.711Jul 11
1977 (280 days)565.655565.099Nov 28566.017Mar 8
1976 (256 days)566.153562.600Mar 3567.806Apr 6
1975 (188 days)565.788563.164Dec 31567.864Apr 22
1974 (59 days)566.446563.152Apr 9567.861Apr 19
1973 (144 days)565.412564.834Nov 21565.834Apr 5
1972 (205 days)566.477565.151Jan 31567.425Mar 24
1971 (119 days)565.439560.088Feb 28567.510Apr 11
1970 (148 days)565.660564.380Jan 6567.358May 8
1969 (127 days)565.392564.368Nov 20567.035May 8
1968 (109 days)564.431563.907Aug 13565.300Mar 8
1967 (67 days)566.312565.169Oct 6567.349Apr 14
1966 (69 days)566.773566.270Oct 28567.230Mar 23
1965 (66 days)566.968566.075Mar 30567.333May 10
1964 (71 days)566.666566.099Nov 3567.242Apr 6
1963 (72 days)566.284564.950Jan 8567.041Jun 21
1962 (79 days)565.046564.505Jan 4565.770Apr 21
1961 (39 days)565.520564.761Oct 27566.053Apr 14
1960 (30 days)566.409565.200Mar 23567.111Apr 24
1959 (18 days)565.296564.624Sep 3565.407Apr 4

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

Monthly averages

MonthAverageLowestHighest
January564.532561.960566.925
February564.783560.088566.900
March565.235560.088567.874
April566.082561.350568.018
May566.172561.260567.926
June565.907561.230567.782
July565.668561.397567.711
August565.386561.260567.240
September565.219561.150567.270
October565.109561.100567.247
November564.665561.100567.212
December564.540561.080566.952

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Daily levels as CSV (11,590 rows; credit the original agencies listed below)