Country: Canada
United StatesCanadaUnited Kingdom

Deloraine Reservoir water level history

Daily records since 1963 · Level today: 540.081 m

Highest on record
541.297 m
Jun 30, 2005
Lowest on record
537.337 m
Feb 24, 1994
Today
540.081 m
Oct 23, 2026
Years of data
63
since 1963

In short

Across 23 complete years, 2003 had the lowest average level (538.811 m) and 2010 the highest (540.007 m).

On average the lake is lowest in October (539.378 m) and highest in May (539.828 m).

Deloraine Reservoir level, all years

Loading chart…

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

Each year's lowest and highest level

5375385395405421963197119791987199520032011201920261963: lowest 539.50 m (1963-12-25), highest 539.69 m (1963-10-01), average 539.57 m, 87 days measured1964: lowest 539.45 m (1964-03-11), highest 540.31 m (1964-05-09), average 539.94 m, 269 days measured1965: lowest 539.71 m (1965-04-01), highest 540.26 m (1965-04-13), average 540.00 m, 351 days measured1966: lowest 539.56 m (1966-12-27), highest 540.19 m (1966-04-03), average 539.89 m, 293 days measured1967: lowest 539.24 m (1967-12-14), highest 540.17 m (1967-04-29), average 539.63 m, 359 days measured1968: lowest 539.19 m (1968-02-29), highest 539.83 m (1968-09-10), average 539.55 m, 299 days measured1969: lowest 539.65 m (1969-03-31), highest 540.45 m (1969-04-14), average 539.88 m, 329 days measured1970: lowest 539.51 m (1970-12-31), highest 540.37 m (1970-04-29), average 539.83 m, 296 days measured1971: lowest 539.46 m (1971-03-02), highest 540.32 m (1971-04-08), average 539.94 m, 358 days measured1972: lowest 539.79 m (1972-12-26), highest 540.32 m (1972-04-17), average 540.03 m, 299 days measured1973: lowest 539.75 m (1973-02-04), highest 540.15 m (1973-06-19), average 540.02 m, 326 days measured1974: lowest 539.60 m (1974-12-15), highest 540.45 m (1974-04-21), average 539.94 m, 346 days measured1975: lowest 539.57 m (1975-03-12), highest 540.54 m (1975-04-28), average 539.96 m, 356 days measured1976: lowest 539.37 m (1976-12-28), highest 540.52 m (1976-04-09), average 539.89 m, 366 days measured1977: lowest 538.67 m (1977-12-13), highest 539.37 m (1977-01-01), average 539.06 m, 365 days measured1978: lowest 538.62 m (1978-03-24), highest 539.39 m (1978-05-26), average 538.94 m, 365 days measured1979: lowest 538.63 m (1979-04-08), highest 540.42 m (1979-05-18), average 539.50 m, 365 days measured1980: lowest 539.14 m (1980-10-15), highest 539.77 m (1980-04-19), average 539.35 m, 366 days measured1981: lowest 539.18 m (1981-02-15), highest 540.06 m (1981-04-05), average 539.61 m, 365 days measured1982: lowest 539.18 m (1982-03-28), highest 540.30 m (1982-04-13), average 539.79 m, 251 days measured1983: lowest 539.50 m (1983-03-02), highest 540.46 m (1983-04-15), average 539.96 m, 249 days measured1984: lowest 539.40 m (1984-03-09), highest 540.33 m (1984-05-19), average 539.83 m, 247 days measured1985: lowest 539.40 m (1985-03-14), highest 540.43 m (1985-06-25), average 540.02 m, 259 days measured1986: lowest 539.41 m (1986-11-04), highest 540.43 m (1986-05-07), average 539.85 m, 250 days measured1987: lowest 539.33 m (1987-11-02), highest 540.23 m (1987-04-10), average 539.73 m, 247 days measured1988: lowest 538.30 m (1988-10-31), highest 539.29 m (1988-04-09), average 538.88 m, 247 days measured1989: lowest 538.15 m (1989-03-24), highest 539.45 m (1989-04-26), average 538.96 m, 246 days measured1990: lowest 538.23 m (1990-11-06), highest 538.96 m (1990-04-18), average 538.66 m, 254 days measured1991: lowest 537.57 m (1991-10-26), highest 538.15 m (1991-05-13), average 537.95 m, 245 days measured1992: lowest 537.92 m (1992-10-31), highest 538.78 m (1992-05-02), average 538.36 m, 202 days measured1993: lowest 537.41 m (1993-11-29), highest 537.84 m (1993-04-15), average 537.62 m, 245 days measured1994: lowest 537.34 m (1994-02-24), highest 538.56 m (1994-06-14), average 538.33 m, 254 days measured1995: lowest 538.18 m (1995-01-30), highest 540.38 m (1995-04-21), average 539.83 m, 285 days measured1996: lowest 539.41 m (1996-03-12), highest 540.50 m (1996-04-11), average 539.84 m, 319 days measured1997: lowest 539.23 m (1997-12-28), highest 540.39 m (1997-04-19), average 539.73 m, 304 days measured1998: lowest 539.20 m (1998-02-16), highest 540.31 m (1998-04-05), average 539.82 m, 336 days measured1999: lowest 539.56 m (1999-12-31), highest 540.59 m (1999-05-23), average 539.96 m, 325 days measured2000: lowest 539.47 m (2000-02-19), highest 540.17 m (2000-05-13), average 539.87 m, 366 days measured2001: lowest 539.34 m (2001-12-30), highest 540.36 m (2001-04-12), average 539.80 m, 365 days measured2002: lowest 538.70 m (2002-12-17), highest 539.34 m (2002-01-01), average 539.06 m, 363 days measured2003: lowest 538.40 m (2003-12-26), highest 539.40 m (2003-05-12), average 538.81 m, 341 days measured2004: lowest 538.35 m (2004-03-20), highest 540.27 m (2004-06-02), average 539.41 m, 366 days measured2005: lowest 539.58 m (2005-03-21), highest 541.30 m (2005-06-30), average 540.00 m, 364 days measured2006: lowest 539.22 m (2006-12-28), highest 540.45 m (2006-04-06), average 539.80 m, 365 days measured2007: lowest 539.15 m (2007-02-25), highest 540.27 m (2007-06-27), average 539.72 m, 365 days measured2008: lowest 538.56 m (2008-12-30), highest 539.41 m (2008-01-01), average 539.02 m, 366 days measured2009: lowest 538.51 m (2009-03-19), highest 540.13 m (2009-06-09), average 539.44 m, 284 days measured2010: lowest 539.49 m (2010-03-08), highest 540.52 m (2010-06-20), average 540.01 m, 365 days measured2011: lowest 539.87 m (2011-11-05), highest 540.93 m (2011-06-01), average 540.11 m, 288 days measured2012: lowest 539.35 m (2012-12-25), highest 540.16 m (2012-03-19), average 539.81 m, 284 days measured2013: lowest 539.28 m (2013-04-23), highest 540.34 m (2013-04-29), average 539.83 m, 264 days measured2014: lowest 540.00 m (2014-01-01), highest 541.00 m (2014-07-01), average 540.13 m, 319 days measured2015: lowest 539.59 m (2015-12-07), highest 540.35 m (2015-05-20), average 539.95 m, 365 days measured2026: lowest 539.99 m (2026-09-23), highest 540.08 m (2026-10-15), average 540.04 m, 30 days measured
537538539540542196319791995201120261963: lowest 539.50 m (1963-12-25), highest 539.69 m (1963-10-01), average 539.57 m, 87 days measured1964: lowest 539.45 m (1964-03-11), highest 540.31 m (1964-05-09), average 539.94 m, 269 days measured1965: lowest 539.71 m (1965-04-01), highest 540.26 m (1965-04-13), average 540.00 m, 351 days measured1966: lowest 539.56 m (1966-12-27), highest 540.19 m (1966-04-03), average 539.89 m, 293 days measured1967: lowest 539.24 m (1967-12-14), highest 540.17 m (1967-04-29), average 539.63 m, 359 days measured1968: lowest 539.19 m (1968-02-29), highest 539.83 m (1968-09-10), average 539.55 m, 299 days measured1969: lowest 539.65 m (1969-03-31), highest 540.45 m (1969-04-14), average 539.88 m, 329 days measured1970: lowest 539.51 m (1970-12-31), highest 540.37 m (1970-04-29), average 539.83 m, 296 days measured1971: lowest 539.46 m (1971-03-02), highest 540.32 m (1971-04-08), average 539.94 m, 358 days measured1972: lowest 539.79 m (1972-12-26), highest 540.32 m (1972-04-17), average 540.03 m, 299 days measured1973: lowest 539.75 m (1973-02-04), highest 540.15 m (1973-06-19), average 540.02 m, 326 days measured1974: lowest 539.60 m (1974-12-15), highest 540.45 m (1974-04-21), average 539.94 m, 346 days measured1975: lowest 539.57 m (1975-03-12), highest 540.54 m (1975-04-28), average 539.96 m, 356 days measured1976: lowest 539.37 m (1976-12-28), highest 540.52 m (1976-04-09), average 539.89 m, 366 days measured1977: lowest 538.67 m (1977-12-13), highest 539.37 m (1977-01-01), average 539.06 m, 365 days measured1978: lowest 538.62 m (1978-03-24), highest 539.39 m (1978-05-26), average 538.94 m, 365 days measured1979: lowest 538.63 m (1979-04-08), highest 540.42 m (1979-05-18), average 539.50 m, 365 days measured1980: lowest 539.14 m (1980-10-15), highest 539.77 m (1980-04-19), average 539.35 m, 366 days measured1981: lowest 539.18 m (1981-02-15), highest 540.06 m (1981-04-05), average 539.61 m, 365 days measured1982: lowest 539.18 m (1982-03-28), highest 540.30 m (1982-04-13), average 539.79 m, 251 days measured1983: lowest 539.50 m (1983-03-02), highest 540.46 m (1983-04-15), average 539.96 m, 249 days measured1984: lowest 539.40 m (1984-03-09), highest 540.33 m (1984-05-19), average 539.83 m, 247 days measured1985: lowest 539.40 m (1985-03-14), highest 540.43 m (1985-06-25), average 540.02 m, 259 days measured1986: lowest 539.41 m (1986-11-04), highest 540.43 m (1986-05-07), average 539.85 m, 250 days measured1987: lowest 539.33 m (1987-11-02), highest 540.23 m (1987-04-10), average 539.73 m, 247 days measured1988: lowest 538.30 m (1988-10-31), highest 539.29 m (1988-04-09), average 538.88 m, 247 days measured1989: lowest 538.15 m (1989-03-24), highest 539.45 m (1989-04-26), average 538.96 m, 246 days measured1990: lowest 538.23 m (1990-11-06), highest 538.96 m (1990-04-18), average 538.66 m, 254 days measured1991: lowest 537.57 m (1991-10-26), highest 538.15 m (1991-05-13), average 537.95 m, 245 days measured1992: lowest 537.92 m (1992-10-31), highest 538.78 m (1992-05-02), average 538.36 m, 202 days measured1993: lowest 537.41 m (1993-11-29), highest 537.84 m (1993-04-15), average 537.62 m, 245 days measured1994: lowest 537.34 m (1994-02-24), highest 538.56 m (1994-06-14), average 538.33 m, 254 days measured1995: lowest 538.18 m (1995-01-30), highest 540.38 m (1995-04-21), average 539.83 m, 285 days measured1996: lowest 539.41 m (1996-03-12), highest 540.50 m (1996-04-11), average 539.84 m, 319 days measured1997: lowest 539.23 m (1997-12-28), highest 540.39 m (1997-04-19), average 539.73 m, 304 days measured1998: lowest 539.20 m (1998-02-16), highest 540.31 m (1998-04-05), average 539.82 m, 336 days measured1999: lowest 539.56 m (1999-12-31), highest 540.59 m (1999-05-23), average 539.96 m, 325 days measured2000: lowest 539.47 m (2000-02-19), highest 540.17 m (2000-05-13), average 539.87 m, 366 days measured2001: lowest 539.34 m (2001-12-30), highest 540.36 m (2001-04-12), average 539.80 m, 365 days measured2002: lowest 538.70 m (2002-12-17), highest 539.34 m (2002-01-01), average 539.06 m, 363 days measured2003: lowest 538.40 m (2003-12-26), highest 539.40 m (2003-05-12), average 538.81 m, 341 days measured2004: lowest 538.35 m (2004-03-20), highest 540.27 m (2004-06-02), average 539.41 m, 366 days measured2005: lowest 539.58 m (2005-03-21), highest 541.30 m (2005-06-30), average 540.00 m, 364 days measured2006: lowest 539.22 m (2006-12-28), highest 540.45 m (2006-04-06), average 539.80 m, 365 days measured2007: lowest 539.15 m (2007-02-25), highest 540.27 m (2007-06-27), average 539.72 m, 365 days measured2008: lowest 538.56 m (2008-12-30), highest 539.41 m (2008-01-01), average 539.02 m, 366 days measured2009: lowest 538.51 m (2009-03-19), highest 540.13 m (2009-06-09), average 539.44 m, 284 days measured2010: lowest 539.49 m (2010-03-08), highest 540.52 m (2010-06-20), average 540.01 m, 365 days measured2011: lowest 539.87 m (2011-11-05), highest 540.93 m (2011-06-01), average 540.11 m, 288 days measured2012: lowest 539.35 m (2012-12-25), highest 540.16 m (2012-03-19), average 539.81 m, 284 days measured2013: lowest 539.28 m (2013-04-23), highest 540.34 m (2013-04-29), average 539.83 m, 264 days measured2014: lowest 540.00 m (2014-01-01), highest 541.00 m (2014-07-01), average 540.13 m, 319 days measured2015: lowest 539.59 m (2015-12-07), highest 540.35 m (2015-05-20), average 539.95 m, 365 days measured2026: lowest 539.99 m (2026-09-23), highest 540.08 m (2026-10-15), average 540.04 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.

  • 2004538.345 m on Mar 20
  • 2003538.400 m on Dec 26
  • 2008538.557 m on Dec 30
  • 1978538.618 m on Mar 24
  • 1979538.625 m on Apr 8

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)540.043539.985Sep 23540.085Oct 15
2015539.951539.593Dec 7540.353May 20
2014 (319 days)540.133539.999Jan 1540.997Jul 1
2013 (264 days)539.832539.282Apr 23540.342Apr 29
2012 (284 days)539.812539.352Dec 25540.164Mar 19
2011 (288 days)540.112539.872Nov 5540.929Jun 1
2010540.007539.485Mar 8540.522Jun 20
2009 (284 days)539.441538.512Mar 19540.133Jun 9
2008539.019538.557Dec 30539.413Jan 1
2007539.716539.154Feb 25540.271Jun 27
2006539.802539.221Dec 28540.452Apr 6
2005540.003539.582Mar 21541.297Jun 30
2004539.411538.345Mar 20540.265Jun 2
2003538.811538.400Dec 26539.399May 12
2002539.061538.697Dec 17539.339Jan 1
2001539.799539.338Dec 30540.357Apr 12
2000539.867539.470Feb 19540.174May 13
1999 (325 days)539.959539.562Dec 31540.592May 23
1998539.818539.201Feb 16540.305Apr 5
1997 (304 days)539.733539.233Dec 28540.389Apr 19
1996 (319 days)539.843539.406Mar 12540.504Apr 11
1995 (285 days)539.831538.182Jan 30540.383Apr 21
1994 (254 days)538.328537.337Feb 24538.556Jun 14
1993 (245 days)537.619537.410Nov 29537.843Apr 15
1992 (202 days)538.362537.919Oct 31538.778May 2
1991 (245 days)537.948537.574Oct 26538.150May 13
1990 (254 days)538.657538.234Nov 6538.961Apr 18
1989 (246 days)538.964538.149Mar 24539.451Apr 26
1988 (247 days)538.885538.303Oct 31539.292Apr 9
1987 (247 days)539.727539.328Nov 2540.228Apr 10
1986 (250 days)539.855539.405Nov 4540.434May 7
1985 (259 days)540.020539.397Mar 14540.426Jun 25
1984 (247 days)539.834539.398Mar 9540.332May 19
1983 (249 days)539.965539.501Mar 2540.462Apr 15
1982 (251 days)539.789539.176Mar 28540.296Apr 13
1981539.611539.182Feb 15540.063Apr 5
1980539.352539.136Oct 15539.772Apr 19
1979539.500538.625Apr 8540.417May 18
1978538.939538.618Mar 24539.386May 26
1977539.058538.673Dec 13539.365Jan 1
1976539.890539.365Dec 28540.523Apr 9
1975539.961539.572Mar 12540.541Apr 28
1974539.941539.603Dec 15540.453Apr 21
1973 (326 days)540.023539.746Feb 4540.154Jun 19
1972 (299 days)540.032539.789Dec 26540.316Apr 17
1971539.938539.462Mar 2540.322Apr 8
1970 (296 days)539.827539.514Dec 31540.365Apr 29
1969 (329 days)539.878539.648Mar 31540.447Apr 14
1968 (299 days)539.548539.188Feb 29539.834Sep 10
1967539.630539.243Dec 14540.167Apr 29
1966 (293 days)539.893539.560Dec 27540.188Apr 3
1965539.999539.706Apr 1540.261Apr 13
1964 (269 days)539.940539.453Mar 11540.310May 9
1963 (87 days)539.566539.496Dec 25539.691Oct 1

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

Monthly averages

MonthAverageLowestHighest
January539.485538.182540.176
February539.425537.337540.203
March539.441538.027540.325
April539.804537.816540.631
May539.828537.666540.742
June539.811537.597541.297
July539.719537.602541.129
August539.562537.648540.232
September539.456537.536540.145
October539.378537.429540.185
November539.461537.410540.212
December539.508537.410540.137

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Daily levels as CSV (16,385 rows; credit the original agencies listed below)