Country: Canada
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Lake Irwin water level history

Daily records since 1960 · Level today: 359.080 m

Highest on record
359.926 m
Apr 11, 2006
Lowest on record
358.014 m
Sep 16, 2006
Today
359.080 m
Oct 23, 2026
Years of data
66
since 1960

In short

Across 40 complete years, 1961 had the lowest average level (358.624 m) and 2011 the highest (359.144 m).

On average the lake is lowest in September (358.788 m) and highest in April (359.159 m).

Lake Irwin level, all years

Loading chart…

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

Each year's lowest and highest level

357.9358.4359.0359.5360.01960196819761984199220002008201620261960: lowest 358.51 m (1960-12-30), highest 359.10 m (1960-06-11), average 358.81 m, 181 days measured1961: lowest 358.20 m (1961-03-08), highest 359.21 m (1961-05-31), average 358.62 m, 335 days measured1962: lowest 358.43 m (1962-01-03), highest 359.39 m (1962-04-25), average 359.07 m, 214 days measured1963: lowest 358.45 m (1963-12-25), highest 359.25 m (1963-03-29), average 358.91 m, 271 days measured1964: lowest 358.08 m (1964-03-10), highest 359.17 m (1964-05-04), average 358.83 m, 292 days measured1965: lowest 358.46 m (1965-02-26), highest 359.72 m (1965-04-14), average 358.83 m, 159 days measured1966: lowest 358.46 m (1966-12-31), highest 359.31 m (1966-04-05), average 358.60 m, 129 days measured1967: lowest 358.40 m (1967-10-05), highest 359.16 m (1967-04-15), average 358.72 m, 271 days measured1968: lowest 358.31 m (1968-03-06), highest 359.11 m (1968-04-12), average 358.96 m, 328 days measured1969: lowest 358.83 m (1969-02-22), highest 359.59 m (1969-04-14), average 359.03 m, 332 days measured1970: lowest 359.02 m (1970-01-21), highest 359.44 m (1970-05-07), average 359.08 m, 284 days measured1971: lowest 359.03 m (1971-08-31), highest 359.38 m (1971-07-15), average 359.11 m, 343 days measured1972: lowest 358.99 m (1972-09-11), highest 359.46 m (1972-04-16), average 359.09 m, 285 days measured1973: lowest 358.95 m (1973-01-14), highest 359.18 m (1973-09-05), average 359.06 m, 351 days measured1974: lowest 358.89 m (1974-08-20), highest 359.87 m (1974-04-21), average 359.08 m, 365 days measured1975: lowest 359.01 m (1975-07-16), highest 359.36 m (1975-05-05), average 359.08 m, 355 days measured1976: lowest 358.73 m (1976-10-05), highest 359.78 m (1976-04-10), average 359.02 m, 348 days measured1977: lowest 359.02 m (1977-01-01), highest 359.17 m (1977-09-10), average 359.08 m, 346 days measured1978: lowest 358.54 m (1978-09-11), highest 359.29 m (1978-04-13), average 358.98 m, 365 days measured1979: lowest 358.41 m (1979-10-13), highest 359.81 m (1979-04-25), average 358.88 m, 365 days measured1980: lowest 358.71 m (1980-07-30), highest 359.14 m (1980-04-07), average 358.96 m, 366 days measured1981: lowest 358.79 m (1981-08-04), highest 359.10 m (1981-02-24), average 359.02 m, 365 days measured1982: lowest 358.71 m (1982-09-27), highest 359.30 m (1982-04-19), average 358.98 m, 365 days measured1983: lowest 358.52 m (1983-09-29), highest 359.64 m (1983-04-22), average 358.93 m, 365 days measured1984: lowest 358.25 m (1984-09-07), highest 359.13 m (1984-04-17), average 358.77 m, 366 days measured1985: lowest 358.81 m (1985-08-03), highest 359.33 m (1985-04-05), average 359.02 m, 365 days measured1986: lowest 358.75 m (1986-09-18), highest 359.44 m (1986-03-31), average 359.04 m, 334 days measured1987: lowest 358.67 m (1987-07-18), highest 359.58 m (1987-04-08), average 358.99 m, 365 days measured1988: lowest 358.06 m (1988-10-25), highest 359.10 m (1988-04-06), average 358.63 m, 366 days measured1989: lowest 358.07 m (1989-10-26), highest 359.09 m (1989-06-16), average 358.61 m, 267 days measured1990: lowest 358.03 m (1990-01-10), highest 359.20 m (1990-04-07), average 358.61 m, 311 days measured1991: lowest 358.16 m (1991-02-06), highest 359.12 m (1991-05-08), average 358.73 m, 365 days measured1992: lowest 358.69 m (1992-09-04), highest 359.42 m (1992-04-08), average 358.99 m, 366 days measured1993: lowest 358.97 m (1993-06-10), highest 359.18 m (1993-07-06), average 359.04 m, 365 days measured1994: lowest 358.97 m (1994-02-20), highest 359.11 m (1994-07-05), average 359.03 m, 197 days measured1995: lowest 358.78 m (1995-08-17), highest 359.86 m (1995-04-20), average 359.06 m, 341 days measured1996: lowest 358.60 m (1996-10-20), highest 359.60 m (1996-04-17), average 358.95 m, 366 days measured1997: lowest 358.31 m (1997-10-08), highest 359.41 m (1997-04-20), average 358.79 m, 365 days measured1998: lowest 358.58 m (1998-01-01), highest 359.33 m (1998-04-14), average 358.98 m, 340 days measured1999: lowest 358.95 m (1999-09-07), highest 359.37 m (1999-03-30), average 359.07 m, 318 days measured2000: lowest 358.90 m (2000-09-02), highest 359.24 m (2000-03-08), average 359.09 m, 366 days measured2001: lowest 358.77 m (2001-10-11), highest 359.75 m (2001-04-15), average 359.06 m, 365 days measured2002: lowest 358.91 m (2002-10-16), highest 359.16 m (2002-04-18), average 359.03 m, 365 days measured2003: lowest 358.07 m (2003-10-21), highest 359.17 m (2003-04-30), average 358.68 m, 365 days measured2004: lowest 358.13 m (2004-01-09), highest 359.38 m (2004-04-03), average 358.69 m, 169 days measured2005: lowest 358.58 m (2005-10-05), highest 359.64 m (2005-04-05), average 359.04 m, 280 days measured2006: lowest 358.01 m (2006-09-16), highest 359.93 m (2006-04-11), average 358.73 m, 365 days measured2007: lowest 358.28 m (2007-10-05), highest 359.70 m (2007-04-02), average 358.72 m, 365 days measured2008: lowest 358.60 m (2008-03-01), highest 359.21 m (2008-06-14), average 358.86 m, 366 days measured2009: lowest 358.81 m (2009-10-04), highest 359.73 m (2009-04-15), average 358.96 m, 352 days measured2010: lowest 358.84 m (2010-01-22), highest 359.38 m (2010-06-20), average 359.03 m, 365 days measured2011: lowest 358.83 m (2011-10-08), highest 359.79 m (2011-04-18), average 359.14 m, 352 days measured2012: lowest 358.31 m (2012-10-07), highest 359.21 m (2012-12-31), average 358.92 m, 366 days measured2013: lowest 358.94 m (2013-08-28), highest 359.61 m (2013-04-29), average 359.07 m, 365 days measured2014: lowest 359.03 m (2014-08-16), highest 359.62 m (2014-07-06), average 359.13 m, 339 days measured2015: lowest 359.01 m (2015-09-15), highest 359.25 m (2015-04-02), average 359.09 m, 365 days measured2026: lowest 359.08 m (2026-10-11), highest 359.12 m (2026-09-22), average 359.10 m, 30 days measured
357.9358.4359.0359.5360.0196019771994201120261960: lowest 358.51 m (1960-12-30), highest 359.10 m (1960-06-11), average 358.81 m, 181 days measured1961: lowest 358.20 m (1961-03-08), highest 359.21 m (1961-05-31), average 358.62 m, 335 days measured1962: lowest 358.43 m (1962-01-03), highest 359.39 m (1962-04-25), average 359.07 m, 214 days measured1963: lowest 358.45 m (1963-12-25), highest 359.25 m (1963-03-29), average 358.91 m, 271 days measured1964: lowest 358.08 m (1964-03-10), highest 359.17 m (1964-05-04), average 358.83 m, 292 days measured1965: lowest 358.46 m (1965-02-26), highest 359.72 m (1965-04-14), average 358.83 m, 159 days measured1966: lowest 358.46 m (1966-12-31), highest 359.31 m (1966-04-05), average 358.60 m, 129 days measured1967: lowest 358.40 m (1967-10-05), highest 359.16 m (1967-04-15), average 358.72 m, 271 days measured1968: lowest 358.31 m (1968-03-06), highest 359.11 m (1968-04-12), average 358.96 m, 328 days measured1969: lowest 358.83 m (1969-02-22), highest 359.59 m (1969-04-14), average 359.03 m, 332 days measured1970: lowest 359.02 m (1970-01-21), highest 359.44 m (1970-05-07), average 359.08 m, 284 days measured1971: lowest 359.03 m (1971-08-31), highest 359.38 m (1971-07-15), average 359.11 m, 343 days measured1972: lowest 358.99 m (1972-09-11), highest 359.46 m (1972-04-16), average 359.09 m, 285 days measured1973: lowest 358.95 m (1973-01-14), highest 359.18 m (1973-09-05), average 359.06 m, 351 days measured1974: lowest 358.89 m (1974-08-20), highest 359.87 m (1974-04-21), average 359.08 m, 365 days measured1975: lowest 359.01 m (1975-07-16), highest 359.36 m (1975-05-05), average 359.08 m, 355 days measured1976: lowest 358.73 m (1976-10-05), highest 359.78 m (1976-04-10), average 359.02 m, 348 days measured1977: lowest 359.02 m (1977-01-01), highest 359.17 m (1977-09-10), average 359.08 m, 346 days measured1978: lowest 358.54 m (1978-09-11), highest 359.29 m (1978-04-13), average 358.98 m, 365 days measured1979: lowest 358.41 m (1979-10-13), highest 359.81 m (1979-04-25), average 358.88 m, 365 days measured1980: lowest 358.71 m (1980-07-30), highest 359.14 m (1980-04-07), average 358.96 m, 366 days measured1981: lowest 358.79 m (1981-08-04), highest 359.10 m (1981-02-24), average 359.02 m, 365 days measured1982: lowest 358.71 m (1982-09-27), highest 359.30 m (1982-04-19), average 358.98 m, 365 days measured1983: lowest 358.52 m (1983-09-29), highest 359.64 m (1983-04-22), average 358.93 m, 365 days measured1984: lowest 358.25 m (1984-09-07), highest 359.13 m (1984-04-17), average 358.77 m, 366 days measured1985: lowest 358.81 m (1985-08-03), highest 359.33 m (1985-04-05), average 359.02 m, 365 days measured1986: lowest 358.75 m (1986-09-18), highest 359.44 m (1986-03-31), average 359.04 m, 334 days measured1987: lowest 358.67 m (1987-07-18), highest 359.58 m (1987-04-08), average 358.99 m, 365 days measured1988: lowest 358.06 m (1988-10-25), highest 359.10 m (1988-04-06), average 358.63 m, 366 days measured1989: lowest 358.07 m (1989-10-26), highest 359.09 m (1989-06-16), average 358.61 m, 267 days measured1990: lowest 358.03 m (1990-01-10), highest 359.20 m (1990-04-07), average 358.61 m, 311 days measured1991: lowest 358.16 m (1991-02-06), highest 359.12 m (1991-05-08), average 358.73 m, 365 days measured1992: lowest 358.69 m (1992-09-04), highest 359.42 m (1992-04-08), average 358.99 m, 366 days measured1993: lowest 358.97 m (1993-06-10), highest 359.18 m (1993-07-06), average 359.04 m, 365 days measured1994: lowest 358.97 m (1994-02-20), highest 359.11 m (1994-07-05), average 359.03 m, 197 days measured1995: lowest 358.78 m (1995-08-17), highest 359.86 m (1995-04-20), average 359.06 m, 341 days measured1996: lowest 358.60 m (1996-10-20), highest 359.60 m (1996-04-17), average 358.95 m, 366 days measured1997: lowest 358.31 m (1997-10-08), highest 359.41 m (1997-04-20), average 358.79 m, 365 days measured1998: lowest 358.58 m (1998-01-01), highest 359.33 m (1998-04-14), average 358.98 m, 340 days measured1999: lowest 358.95 m (1999-09-07), highest 359.37 m (1999-03-30), average 359.07 m, 318 days measured2000: lowest 358.90 m (2000-09-02), highest 359.24 m (2000-03-08), average 359.09 m, 366 days measured2001: lowest 358.77 m (2001-10-11), highest 359.75 m (2001-04-15), average 359.06 m, 365 days measured2002: lowest 358.91 m (2002-10-16), highest 359.16 m (2002-04-18), average 359.03 m, 365 days measured2003: lowest 358.07 m (2003-10-21), highest 359.17 m (2003-04-30), average 358.68 m, 365 days measured2004: lowest 358.13 m (2004-01-09), highest 359.38 m (2004-04-03), average 358.69 m, 169 days measured2005: lowest 358.58 m (2005-10-05), highest 359.64 m (2005-04-05), average 359.04 m, 280 days measured2006: lowest 358.01 m (2006-09-16), highest 359.93 m (2006-04-11), average 358.73 m, 365 days measured2007: lowest 358.28 m (2007-10-05), highest 359.70 m (2007-04-02), average 358.72 m, 365 days measured2008: lowest 358.60 m (2008-03-01), highest 359.21 m (2008-06-14), average 358.86 m, 366 days measured2009: lowest 358.81 m (2009-10-04), highest 359.73 m (2009-04-15), average 358.96 m, 352 days measured2010: lowest 358.84 m (2010-01-22), highest 359.38 m (2010-06-20), average 359.03 m, 365 days measured2011: lowest 358.83 m (2011-10-08), highest 359.79 m (2011-04-18), average 359.14 m, 352 days measured2012: lowest 358.31 m (2012-10-07), highest 359.21 m (2012-12-31), average 358.92 m, 366 days measured2013: lowest 358.94 m (2013-08-28), highest 359.61 m (2013-04-29), average 359.07 m, 365 days measured2014: lowest 359.03 m (2014-08-16), highest 359.62 m (2014-07-06), average 359.13 m, 339 days measured2015: lowest 359.01 m (2015-09-15), highest 359.25 m (2015-04-02), average 359.09 m, 365 days measured2026: lowest 359.08 m (2026-10-11), highest 359.12 m (2026-09-22), average 359.10 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.

  • 2006358.014 m on Sep 16
  • 1988358.064 m on Oct 25
  • 2003358.066 m on Oct 21
  • 1991358.160 m on Feb 6
  • 1961358.198 m on Mar 8

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)359.098359.078Oct 11359.122Sep 22
2015359.091359.012Sep 15359.246Apr 2
2014359.128359.034Aug 16359.615Jul 6
2013359.072358.939Aug 28359.610Apr 29
2012358.924358.308Oct 7359.214Dec 31
2011359.144358.826Oct 8359.791Apr 18
2010359.026358.844Jan 22359.382Jun 20
2009358.957358.808Oct 4359.734Apr 15
2008358.860358.598Mar 1359.205Jun 14
2007358.723358.280Oct 5359.699Apr 2
2006358.732358.014Sep 16359.926Apr 11
2005 (280 days)359.039358.578Oct 5359.641Apr 5
2004 (169 days)358.688358.130Jan 9359.384Apr 3
2003358.684358.066Oct 21359.168Apr 30
2002359.029358.911Oct 16359.162Apr 18
2001359.059358.768Oct 11359.751Apr 15
2000359.087358.896Sep 2359.244Mar 8
1999 (318 days)359.066358.951Sep 7359.366Mar 30
1998358.977358.577Jan 1359.328Apr 14
1997358.792358.312Oct 8359.414Apr 20
1996358.949358.600Oct 20359.601Apr 17
1995359.058358.783Aug 17359.857Apr 20
1994 (197 days)359.030358.975Feb 20359.107Jul 5
1993359.042358.970Jun 10359.182Jul 6
1992358.993358.694Sep 4359.416Apr 8
1991358.731358.160Feb 6359.115May 8
1990 (311 days)358.606358.029Jan 10359.198Apr 7
1989 (267 days)358.608358.066Oct 26359.091Jun 16
1988358.633358.064Oct 25359.101Apr 6
1987358.994358.668Jul 18359.582Apr 8
1986359.042358.749Sep 18359.439Mar 31
1985359.019358.809Aug 3359.328Apr 5
1984358.774358.251Sep 7359.125Apr 17
1983358.925358.523Sep 29359.641Apr 22
1982358.983358.707Sep 27359.301Apr 19
1981359.021358.788Aug 4359.098Feb 24
1980358.963358.705Jul 30359.139Apr 7
1979358.880358.406Oct 13359.808Apr 25
1978358.981358.542Sep 11359.286Apr 13
1977359.079359.018Jan 1359.170Sep 10
1976359.022358.731Oct 5359.783Apr 10
1975359.083359.012Jul 16359.356May 5
1974359.076358.887Aug 20359.868Apr 21
1973359.060358.945Jan 14359.176Sep 5
1972 (285 days)359.093358.987Sep 11359.460Apr 16
1971359.111359.027Aug 31359.377Jul 15
1970 (284 days)359.085359.021Jan 21359.441May 7
1969359.031358.829Feb 22359.588Apr 14
1968 (328 days)358.955358.308Mar 6359.112Apr 12
1967 (271 days)358.719358.402Oct 5359.158Apr 15
1966 (129 days)358.599358.463Dec 31359.313Apr 5
1965 (159 days)358.832358.463Feb 26359.716Apr 14
1964 (292 days)358.831358.082Mar 10359.173May 4
1963 (271 days)358.907358.451Dec 25359.246Mar 29
1962 (214 days)359.074358.433Jan 3359.393Apr 25
1961358.624358.198Mar 8359.213May 31
1960 (181 days)358.807358.509Dec 30359.100Jun 11

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

Monthly averages

MonthAverageLowestHighest
January358.905358.029359.255
February358.903358.042359.216
March358.919358.043359.682
April359.159358.207359.926
May359.114358.701359.512
June359.080358.721359.693
July359.017358.634359.615
August358.891358.248359.199
September358.788358.014359.204
October358.790358.064359.173
November358.855358.068359.226
December358.874358.107359.214

Download

Daily levels as CSV (18,317 rows; credit the original agencies listed below)