Country: Canada
United StatesCanadaUnited Kingdom

Elkwater Lake water level history

Daily records since 1917 · Level today: 1,226.311 m

Highest on record
1,253.520 m
Jul 17, 1928
Lowest on record
1,225.250 m
Oct 25, 1962
Today
1,226.311 m
Oct 23, 2026
Years of data
109
since 1917

In short

On average the lake is lowest in February (1,226.056 m) and highest in November (1,227.252 m).

Elkwater Lake level, all years

Loading chart…

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

Each year's lowest and highest level

1,2241,2311,2391,2471,2551917193119451959197319872001201520261917: lowest 1,252.12 m (1917-08-14), highest 1,252.12 m (1917-08-14), average 1,252.12 m, 1 days measured1918: lowest 1,252.27 m (1918-10-09), highest 1,252.47 m (1918-07-19), average 1,252.37 m, 4 days measured1919: lowest 1,251.94 m (1919-10-29), highest 1,252.41 m (1919-05-20), average 1,252.09 m, 4 days measured1920: lowest 1,252.08 m (1920-10-11), highest 1,252.43 m (1920-05-22), average 1,252.36 m, 5 days measured1921: lowest 1,252.36 m (1921-09-22), highest 1,252.57 m (1921-07-25), average 1,252.44 m, 5 days measured1922: lowest 1,252.83 m (1922-11-02), highest 1,253.19 m (1922-07-11), average 1,253.03 m, 5 days measured1923: lowest 1,252.91 m (1923-09-10), highest 1,253.07 m (1923-06-24), average 1,252.98 m, 3 days measured1924: lowest 1,252.53 m (1924-10-21), highest 1,252.83 m (1924-04-29), average 1,252.68 m, 5 days measured1925: lowest 1,252.72 m (1925-10-01), highest 1,252.98 m (1925-06-01), average 1,252.84 m, 3 days measured1926: lowest 1,252.52 m (1926-10-25), highest 1,252.93 m (1926-05-06), average 1,252.71 m, 4 days measured1927: lowest 1,253.48 m (1927-08-13), highest 1,253.48 m (1927-08-13), average 1,253.48 m, 1 days measured1928: lowest 1,253.48 m (1928-08-02), highest 1,253.52 m (1928-07-17), average 1,253.50 m, 3 days measured1929: lowest 1,252.90 m (1929-09-14), highest 1,253.46 m (1929-04-15), average 1,253.20 m, 3 days measured1930: lowest 1,253.03 m (1930-11-20), highest 1,253.34 m (1930-06-13), average 1,253.18 m, 3 days measured1931: lowest 1,252.95 m (1931-04-18), highest 1,252.95 m (1931-04-18), average 1,252.95 m, 1 days measured1940: lowest 1,251.09 m (1940-05-30), highest 1,251.09 m (1940-05-30), average 1,251.09 m, 1 days measured1953: lowest 1,225.98 m (1953-11-06), highest 1,226.34 m (1953-07-14), average 1,226.20 m, 3 days measured1962: lowest 1,225.25 m (1962-10-25), highest 1,225.28 m (1962-09-28), average 1,225.27 m, 2 days measured1963: lowest 1,225.25 m (1963-10-28), highest 1,225.55 m (1963-07-03), average 1,225.42 m, 9 days measured1964: lowest 1,225.30 m (1964-02-27), highest 1,226.11 m (1964-05-14), average 1,225.74 m, 15 days measured1965: lowest 1,226.00 m (1965-03-01), highest 1,226.36 m (1965-07-05), average 1,226.25 m, 9 days measured1966: lowest 1,226.18 m (1966-08-18), highest 1,226.37 m (1966-06-30), average 1,226.27 m, 10 days measured1967: lowest 1,225.91 m (1967-10-30), highest 1,226.42 m (1967-05-10), average 1,226.20 m, 11 days measured1968: lowest 1,226.11 m (1968-02-26), highest 1,226.31 m (1968-05-13), average 1,226.21 m, 18 days measured1969: lowest 1,225.93 m (1969-09-08), highest 1,226.32 m (1969-05-05), average 1,226.14 m, 10 days measured1970: lowest 1,226.03 m (1970-10-13), highest 1,226.37 m (1970-05-04), average 1,226.20 m, 12 days measured1971: lowest 1,225.92 m (1971-10-26), highest 1,226.38 m (1971-06-08), average 1,226.23 m, 100 days measured1972: lowest 1,226.06 m (1972-10-26), highest 1,226.24 m (1972-06-18), average 1,226.16 m, 168 days measured1973: lowest 1,225.99 m (1973-10-26), highest 1,226.42 m (1973-06-20), average 1,226.20 m, 89 days measured1974: lowest 1,226.11 m (1974-10-28), highest 1,226.41 m (1974-05-31), average 1,226.25 m, 114 days measured1975: lowest 1,226.32 m (1975-07-25), highest 1,226.51 m (1975-05-14), average 1,226.38 m, 143 days measured1976: lowest 1,226.07 m (1976-10-20), highest 1,226.44 m (1976-04-07), average 1,226.28 m, 170 days measured1977: lowest 1,225.80 m (1977-10-31), highest 1,226.29 m (1977-05-21), average 1,226.09 m, 191 days measured1978: lowest 1,225.88 m (1978-03-21), highest 1,226.30 m (1978-06-12), average 1,226.18 m, 189 days measured1979: lowest 1,226.03 m (1979-10-29), highest 1,226.48 m (1979-04-30), average 1,226.27 m, 175 days measured1980: lowest 1,225.77 m (1980-10-18), highest 1,226.10 m (1980-06-12), average 1,225.98 m, 187 days measured1981: lowest 1,225.75 m (1981-10-29), highest 1,226.29 m (1981-06-19), average 1,226.01 m, 187 days measured1982: lowest 1,225.88 m (1982-02-24), highest 1,226.67 m (1982-06-09), average 1,226.31 m, 201 days measured1983: lowest 1,225.99 m (1983-10-26), highest 1,226.55 m (1983-05-23), average 1,226.32 m, 193 days measured1984: lowest 1,225.70 m (1984-10-17), highest 1,226.24 m (1984-05-17), average 1,226.04 m, 152 days measured1985: lowest 1,225.78 m (1985-03-05), highest 1,226.44 m (1985-05-29), average 1,226.18 m, 167 days measured1986: lowest 1,225.91 m (1986-11-06), highest 1,226.52 m (1986-05-23), average 1,226.33 m, 204 days measured1987: lowest 1,225.91 m (1987-10-24), highest 1,226.39 m (1987-04-28), average 1,226.19 m, 194 days measured1988: lowest 1,225.44 m (1988-10-27), highest 1,226.15 m (1988-04-27), average 1,225.82 m, 193 days measured1989: lowest 1,225.48 m (1989-01-31), highest 1,225.86 m (1989-06-28), average 1,225.70 m, 177 days measured1990: lowest 1,225.48 m (1990-10-30), highest 1,226.01 m (1990-06-21), average 1,225.83 m, 197 days measured1991: lowest 1,225.59 m (1991-02-08), highest 1,226.38 m (1991-07-11), average 1,226.17 m, 198 days measured1992: lowest 1,226.09 m (1992-10-11), highest 1,226.21 m (1992-03-11), average 1,226.14 m, 194 days measured1993: lowest 1,226.18 m (1993-01-26), highest 1,226.57 m (1993-07-27), average 1,226.44 m, 180 days measured1994: lowest 1,226.17 m (1994-09-27), highest 1,226.48 m (1994-04-23), average 1,226.34 m, 200 days measured1995: lowest 1,226.28 m (1995-09-03), highest 1,226.44 m (1995-05-12), average 1,226.36 m, 194 days measured1996: lowest 1,226.12 m (1996-09-12), highest 1,226.50 m (1996-03-13), average 1,226.31 m, 207 days measured1997: lowest 1,226.00 m (1997-10-29), highest 1,226.45 m (1997-05-26), average 1,226.23 m, 188 days measured1998: lowest 1,225.91 m (1998-02-24), highest 1,226.52 m (1998-07-06), average 1,226.18 m, 172 days measured1999: lowest 1,226.21 m (1999-10-25), highest 1,226.51 m (1999-05-18), average 1,226.37 m, 190 days measured2000: lowest 1,225.95 m (2000-10-26), highest 1,226.41 m (2000-06-16), average 1,226.21 m, 187 days measured2001: lowest 1,225.43 m (2001-10-15), highest 1,226.07 m (2001-05-01), average 1,225.74 m, 184 days measured2002: lowest 1,225.52 m (2002-05-01), highest 1,226.38 m (2002-10-30), average 1,226.14 m, 184 days measured2003: lowest 1,226.06 m (2003-10-13), highest 1,226.53 m (2003-05-14), average 1,226.27 m, 184 days measured2004: lowest 1,226.29 m (2004-08-19), highest 1,226.47 m (2004-06-08), average 1,226.36 m, 184 days measured2005: lowest 1,226.27 m (2005-09-08), highest 1,226.55 m (2005-06-07), average 1,226.36 m, 184 days measured2006: lowest 1,226.09 m (2006-09-11), highest 1,226.52 m (2006-05-12), average 1,226.29 m, 184 days measured2007: lowest 1,226.11 m (2007-09-16), highest 1,226.48 m (2007-05-30), average 1,226.30 m, 184 days measured2008: lowest 1,226.19 m (2008-10-20), highest 1,226.55 m (2008-06-13), average 1,226.35 m, 184 days measured2009: lowest 1,226.25 m (2009-09-28), highest 1,226.46 m (2009-07-07), average 1,226.37 m, 184 days measured2010: lowest 1,226.42 m (2010-10-17), highest 1,226.85 m (2010-06-19), average 1,226.51 m, 184 days measured2011: lowest 1,226.36 m (2011-09-29), highest 1,226.67 m (2011-06-04), average 1,226.45 m, 184 days measured2012: lowest 1,226.26 m (2012-10-01), highest 1,226.51 m (2012-05-02), average 1,226.39 m, 184 days measured2013: lowest 1,226.25 m (2013-10-01), highest 1,226.46 m (2013-05-15), average 1,226.31 m, 59 days measured2014: lowest 1,226.35 m (2014-08-14), highest 1,226.54 m (2014-06-18), average 1,226.43 m, 150 days measured2015: lowest 1,226.18 m (2015-09-29), highest 1,226.46 m (2015-05-01), average 1,226.33 m, 145 days measured2016: lowest 1,226.40 m (2016-06-20), highest 1,226.50 m (2016-05-28), average 1,226.45 m, 191 days measured2017: lowest 1,226.10 m (2017-09-27), highest 1,226.48 m (2017-05-08), average 1,226.30 m, 184 days measured2018: lowest 1,226.13 m (2018-09-26), highest 1,226.50 m (2018-04-30), average 1,226.30 m, 190 days measured2019: lowest 1,226.10 m (2019-09-26), highest 1,226.42 m (2019-05-18), average 1,226.25 m, 185 days measured2020: lowest 1,226.25 m (2020-09-19), highest 1,226.53 m (2020-05-03), average 1,226.40 m, 194 days measured2021: lowest 1,226.00 m (2021-10-20), highest 1,226.51 m (2021-05-26), average 1,226.25 m, 184 days measured2022: lowest 1,226.04 m (2022-10-19), highest 1,226.48 m (2022-06-21), average 1,226.24 m, 188 days measured2023: lowest 1,226.08 m (2023-09-28), highest 1,226.47 m (2023-05-08), average 1,226.28 m, 191 days measured2024: lowest 1,226.22 m (2024-09-11), highest 1,226.59 m (2024-05-09), average 1,226.37 m, 181 days measured2026: lowest 1,226.31 m (2026-10-21), highest 1,226.36 m (2026-09-22), average 1,226.33 m, 30 days measured
1,2241,2311,2391,2471,255191719451973200120261917: lowest 1,252.12 m (1917-08-14), highest 1,252.12 m (1917-08-14), average 1,252.12 m, 1 days measured1918: lowest 1,252.27 m (1918-10-09), highest 1,252.47 m (1918-07-19), average 1,252.37 m, 4 days measured1919: lowest 1,251.94 m (1919-10-29), highest 1,252.41 m (1919-05-20), average 1,252.09 m, 4 days measured1920: lowest 1,252.08 m (1920-10-11), highest 1,252.43 m (1920-05-22), average 1,252.36 m, 5 days measured1921: lowest 1,252.36 m (1921-09-22), highest 1,252.57 m (1921-07-25), average 1,252.44 m, 5 days measured1922: lowest 1,252.83 m (1922-11-02), highest 1,253.19 m (1922-07-11), average 1,253.03 m, 5 days measured1923: lowest 1,252.91 m (1923-09-10), highest 1,253.07 m (1923-06-24), average 1,252.98 m, 3 days measured1924: lowest 1,252.53 m (1924-10-21), highest 1,252.83 m (1924-04-29), average 1,252.68 m, 5 days measured1925: lowest 1,252.72 m (1925-10-01), highest 1,252.98 m (1925-06-01), average 1,252.84 m, 3 days measured1926: lowest 1,252.52 m (1926-10-25), highest 1,252.93 m (1926-05-06), average 1,252.71 m, 4 days measured1927: lowest 1,253.48 m (1927-08-13), highest 1,253.48 m (1927-08-13), average 1,253.48 m, 1 days measured1928: lowest 1,253.48 m (1928-08-02), highest 1,253.52 m (1928-07-17), average 1,253.50 m, 3 days measured1929: lowest 1,252.90 m (1929-09-14), highest 1,253.46 m (1929-04-15), average 1,253.20 m, 3 days measured1930: lowest 1,253.03 m (1930-11-20), highest 1,253.34 m (1930-06-13), average 1,253.18 m, 3 days measured1931: lowest 1,252.95 m (1931-04-18), highest 1,252.95 m (1931-04-18), average 1,252.95 m, 1 days measured1940: lowest 1,251.09 m (1940-05-30), highest 1,251.09 m (1940-05-30), average 1,251.09 m, 1 days measured1953: lowest 1,225.98 m (1953-11-06), highest 1,226.34 m (1953-07-14), average 1,226.20 m, 3 days measured1962: lowest 1,225.25 m (1962-10-25), highest 1,225.28 m (1962-09-28), average 1,225.27 m, 2 days measured1963: lowest 1,225.25 m (1963-10-28), highest 1,225.55 m (1963-07-03), average 1,225.42 m, 9 days measured1964: lowest 1,225.30 m (1964-02-27), highest 1,226.11 m (1964-05-14), average 1,225.74 m, 15 days measured1965: lowest 1,226.00 m (1965-03-01), highest 1,226.36 m (1965-07-05), average 1,226.25 m, 9 days measured1966: lowest 1,226.18 m (1966-08-18), highest 1,226.37 m (1966-06-30), average 1,226.27 m, 10 days measured1967: lowest 1,225.91 m (1967-10-30), highest 1,226.42 m (1967-05-10), average 1,226.20 m, 11 days measured1968: lowest 1,226.11 m (1968-02-26), highest 1,226.31 m (1968-05-13), average 1,226.21 m, 18 days measured1969: lowest 1,225.93 m (1969-09-08), highest 1,226.32 m (1969-05-05), average 1,226.14 m, 10 days measured1970: lowest 1,226.03 m (1970-10-13), highest 1,226.37 m (1970-05-04), average 1,226.20 m, 12 days measured1971: lowest 1,225.92 m (1971-10-26), highest 1,226.38 m (1971-06-08), average 1,226.23 m, 100 days measured1972: lowest 1,226.06 m (1972-10-26), highest 1,226.24 m (1972-06-18), average 1,226.16 m, 168 days measured1973: lowest 1,225.99 m (1973-10-26), highest 1,226.42 m (1973-06-20), average 1,226.20 m, 89 days measured1974: lowest 1,226.11 m (1974-10-28), highest 1,226.41 m (1974-05-31), average 1,226.25 m, 114 days measured1975: lowest 1,226.32 m (1975-07-25), highest 1,226.51 m (1975-05-14), average 1,226.38 m, 143 days measured1976: lowest 1,226.07 m (1976-10-20), highest 1,226.44 m (1976-04-07), average 1,226.28 m, 170 days measured1977: lowest 1,225.80 m (1977-10-31), highest 1,226.29 m (1977-05-21), average 1,226.09 m, 191 days measured1978: lowest 1,225.88 m (1978-03-21), highest 1,226.30 m (1978-06-12), average 1,226.18 m, 189 days measured1979: lowest 1,226.03 m (1979-10-29), highest 1,226.48 m (1979-04-30), average 1,226.27 m, 175 days measured1980: lowest 1,225.77 m (1980-10-18), highest 1,226.10 m (1980-06-12), average 1,225.98 m, 187 days measured1981: lowest 1,225.75 m (1981-10-29), highest 1,226.29 m (1981-06-19), average 1,226.01 m, 187 days measured1982: lowest 1,225.88 m (1982-02-24), highest 1,226.67 m (1982-06-09), average 1,226.31 m, 201 days measured1983: lowest 1,225.99 m (1983-10-26), highest 1,226.55 m (1983-05-23), average 1,226.32 m, 193 days measured1984: lowest 1,225.70 m (1984-10-17), highest 1,226.24 m (1984-05-17), average 1,226.04 m, 152 days measured1985: lowest 1,225.78 m (1985-03-05), highest 1,226.44 m (1985-05-29), average 1,226.18 m, 167 days measured1986: lowest 1,225.91 m (1986-11-06), highest 1,226.52 m (1986-05-23), average 1,226.33 m, 204 days measured1987: lowest 1,225.91 m (1987-10-24), highest 1,226.39 m (1987-04-28), average 1,226.19 m, 194 days measured1988: lowest 1,225.44 m (1988-10-27), highest 1,226.15 m (1988-04-27), average 1,225.82 m, 193 days measured1989: lowest 1,225.48 m (1989-01-31), highest 1,225.86 m (1989-06-28), average 1,225.70 m, 177 days measured1990: lowest 1,225.48 m (1990-10-30), highest 1,226.01 m (1990-06-21), average 1,225.83 m, 197 days measured1991: lowest 1,225.59 m (1991-02-08), highest 1,226.38 m (1991-07-11), average 1,226.17 m, 198 days measured1992: lowest 1,226.09 m (1992-10-11), highest 1,226.21 m (1992-03-11), average 1,226.14 m, 194 days measured1993: lowest 1,226.18 m (1993-01-26), highest 1,226.57 m (1993-07-27), average 1,226.44 m, 180 days measured1994: lowest 1,226.17 m (1994-09-27), highest 1,226.48 m (1994-04-23), average 1,226.34 m, 200 days measured1995: lowest 1,226.28 m (1995-09-03), highest 1,226.44 m (1995-05-12), average 1,226.36 m, 194 days measured1996: lowest 1,226.12 m (1996-09-12), highest 1,226.50 m (1996-03-13), average 1,226.31 m, 207 days measured1997: lowest 1,226.00 m (1997-10-29), highest 1,226.45 m (1997-05-26), average 1,226.23 m, 188 days measured1998: lowest 1,225.91 m (1998-02-24), highest 1,226.52 m (1998-07-06), average 1,226.18 m, 172 days measured1999: lowest 1,226.21 m (1999-10-25), highest 1,226.51 m (1999-05-18), average 1,226.37 m, 190 days measured2000: lowest 1,225.95 m (2000-10-26), highest 1,226.41 m (2000-06-16), average 1,226.21 m, 187 days measured2001: lowest 1,225.43 m (2001-10-15), highest 1,226.07 m (2001-05-01), average 1,225.74 m, 184 days measured2002: lowest 1,225.52 m (2002-05-01), highest 1,226.38 m (2002-10-30), average 1,226.14 m, 184 days measured2003: lowest 1,226.06 m (2003-10-13), highest 1,226.53 m (2003-05-14), average 1,226.27 m, 184 days measured2004: lowest 1,226.29 m (2004-08-19), highest 1,226.47 m (2004-06-08), average 1,226.36 m, 184 days measured2005: lowest 1,226.27 m (2005-09-08), highest 1,226.55 m (2005-06-07), average 1,226.36 m, 184 days measured2006: lowest 1,226.09 m (2006-09-11), highest 1,226.52 m (2006-05-12), average 1,226.29 m, 184 days measured2007: lowest 1,226.11 m (2007-09-16), highest 1,226.48 m (2007-05-30), average 1,226.30 m, 184 days measured2008: lowest 1,226.19 m (2008-10-20), highest 1,226.55 m (2008-06-13), average 1,226.35 m, 184 days measured2009: lowest 1,226.25 m (2009-09-28), highest 1,226.46 m (2009-07-07), average 1,226.37 m, 184 days measured2010: lowest 1,226.42 m (2010-10-17), highest 1,226.85 m (2010-06-19), average 1,226.51 m, 184 days measured2011: lowest 1,226.36 m (2011-09-29), highest 1,226.67 m (2011-06-04), average 1,226.45 m, 184 days measured2012: lowest 1,226.26 m (2012-10-01), highest 1,226.51 m (2012-05-02), average 1,226.39 m, 184 days measured2013: lowest 1,226.25 m (2013-10-01), highest 1,226.46 m (2013-05-15), average 1,226.31 m, 59 days measured2014: lowest 1,226.35 m (2014-08-14), highest 1,226.54 m (2014-06-18), average 1,226.43 m, 150 days measured2015: lowest 1,226.18 m (2015-09-29), highest 1,226.46 m (2015-05-01), average 1,226.33 m, 145 days measured2016: lowest 1,226.40 m (2016-06-20), highest 1,226.50 m (2016-05-28), average 1,226.45 m, 191 days measured2017: lowest 1,226.10 m (2017-09-27), highest 1,226.48 m (2017-05-08), average 1,226.30 m, 184 days measured2018: lowest 1,226.13 m (2018-09-26), highest 1,226.50 m (2018-04-30), average 1,226.30 m, 190 days measured2019: lowest 1,226.10 m (2019-09-26), highest 1,226.42 m (2019-05-18), average 1,226.25 m, 185 days measured2020: lowest 1,226.25 m (2020-09-19), highest 1,226.53 m (2020-05-03), average 1,226.40 m, 194 days measured2021: lowest 1,226.00 m (2021-10-20), highest 1,226.51 m (2021-05-26), average 1,226.25 m, 184 days measured2022: lowest 1,226.04 m (2022-10-19), highest 1,226.48 m (2022-06-21), average 1,226.24 m, 188 days measured2023: lowest 1,226.08 m (2023-09-28), highest 1,226.47 m (2023-05-08), average 1,226.28 m, 191 days measured2024: lowest 1,226.22 m (2024-09-11), highest 1,226.59 m (2024-05-09), average 1,226.37 m, 181 days measured2026: lowest 1,226.31 m (2026-10-21), highest 1,226.36 m (2026-09-22), average 1,226.33 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)1,226.3331,226.311Oct 211,226.362Sep 22
2024 (181 days)1,226.3671,226.220Sep 111,226.590May 9
2023 (191 days)1,226.2761,226.080Sep 281,226.470May 8
2022 (188 days)1,226.2371,226.040Oct 191,226.480Jun 21
2021 (184 days)1,226.2511,226.000Oct 201,226.510May 26
2020 (194 days)1,226.3991,226.250Sep 191,226.530May 3
2019 (185 days)1,226.2541,226.100Sep 261,226.420May 18
2018 (190 days)1,226.3031,226.130Sep 261,226.500Apr 30
2017 (184 days)1,226.3031,226.100Sep 271,226.480May 8
2016 (191 days)1,226.4451,226.400Jun 201,226.500May 28
2015 (145 days)1,226.3271,226.180Sep 291,226.460May 1
2014 (150 days)1,226.4251,226.350Aug 141,226.540Jun 18
2013 (59 days)1,226.3071,226.250Oct 11,226.460May 15
2012 (184 days)1,226.3871,226.260Oct 11,226.510May 2
2011 (184 days)1,226.4501,226.360Sep 291,226.670Jun 4
2010 (184 days)1,226.5131,226.420Oct 171,226.850Jun 19
2009 (184 days)1,226.3741,226.250Sep 281,226.460Jul 7
2008 (184 days)1,226.3461,226.190Oct 201,226.550Jun 13
2007 (184 days)1,226.2961,226.110Sep 161,226.480May 30
2006 (184 days)1,226.2921,226.090Sep 111,226.520May 12
2005 (184 days)1,226.3591,226.270Sep 81,226.550Jun 7
2004 (184 days)1,226.3581,226.290Aug 191,226.470Jun 8
2003 (184 days)1,226.2731,226.060Oct 131,226.530May 14
2002 (184 days)1,226.1431,225.520May 11,226.380Oct 30
2001 (184 days)1,225.7421,225.430Oct 151,226.070May 1
2000 (187 days)1,226.2061,225.950Oct 261,226.410Jun 16
1999 (190 days)1,226.3731,226.210Oct 251,226.510May 18
1998 (172 days)1,226.1781,225.910Feb 241,226.520Jul 6
1997 (188 days)1,226.2341,226.000Oct 291,226.450May 26
1996 (207 days)1,226.3121,226.120Sep 121,226.500Mar 13
1995 (194 days)1,226.3641,226.280Sep 31,226.440May 12
1994 (200 days)1,226.3371,226.170Sep 271,226.480Apr 23
1993 (180 days)1,226.4431,226.180Jan 261,226.570Jul 27
1992 (194 days)1,226.1411,226.090Oct 111,226.210Mar 11
1991 (198 days)1,226.1701,225.590Feb 81,226.380Jul 11
1990 (197 days)1,225.8251,225.480Oct 301,226.010Jun 21
1989 (177 days)1,225.6951,225.480Jan 311,225.860Jun 28
1988 (193 days)1,225.8211,225.440Oct 271,226.150Apr 27
1987 (194 days)1,226.1911,225.910Oct 241,226.390Apr 28
1986 (204 days)1,226.3331,225.910Nov 61,226.520May 23
1985 (167 days)1,226.1781,225.780Mar 51,226.440May 29
1984 (152 days)1,226.0421,225.700Oct 171,226.240May 17
1983 (193 days)1,226.3231,225.990Oct 261,226.550May 23
1982 (201 days)1,226.3141,225.880Feb 241,226.670Jun 9
1981 (187 days)1,226.0111,225.750Oct 291,226.290Jun 19
1980 (187 days)1,225.9821,225.770Oct 181,226.100Jun 12
1979 (175 days)1,226.2661,226.030Oct 291,226.480Apr 30
1978 (189 days)1,226.1771,225.880Mar 211,226.300Jun 12
1977 (191 days)1,226.0931,225.800Oct 311,226.290May 21
1976 (170 days)1,226.2771,226.070Oct 201,226.440Apr 7
1975 (143 days)1,226.3821,226.320Jul 251,226.510May 14
1974 (114 days)1,226.2531,226.110Oct 281,226.410May 31
1973 (89 days)1,226.1951,225.990Oct 261,226.420Jun 20
1972 (168 days)1,226.1551,226.060Oct 261,226.240Jun 18
1971 (100 days)1,226.2331,225.920Oct 261,226.380Jun 8
1970 (12 days)1,226.2011,226.030Oct 131,226.370May 4
1969 (10 days)1,226.1401,225.930Sep 81,226.320May 5
1968 (18 days)1,226.2121,226.110Feb 261,226.310May 13
1967 (11 days)1,226.1981,225.910Oct 301,226.420May 10
1966 (10 days)1,226.2711,226.180Aug 181,226.370Jun 30
1965 (9 days)1,226.2491,226.000Mar 11,226.360Jul 5
1964 (15 days)1,225.7431,225.300Feb 271,226.110May 14
1963 (9 days)1,225.4161,225.250Oct 281,225.550Jul 3
1962 (2 days)1,225.2651,225.250Oct 251,225.280Sep 28
1953 (3 days)1,226.1971,225.980Nov 61,226.340Jul 14
1940 (1 days)1,251.0901,251.090May 301,251.090May 30
1931 (1 days)1,252.9501,252.950Apr 181,252.950Apr 18
1930 (3 days)1,253.1771,253.030Nov 201,253.340Jun 13
1929 (3 days)1,253.2001,252.900Sep 141,253.460Apr 15
1928 (3 days)1,253.4971,253.480Aug 21,253.520Jul 17
1927 (1 days)1,253.4801,253.480Aug 131,253.480Aug 13
1926 (4 days)1,252.7131,252.520Oct 251,252.930May 6
1925 (3 days)1,252.8401,252.720Oct 11,252.980Jun 1
1924 (5 days)1,252.6821,252.530Oct 211,252.830Apr 29
1923 (3 days)1,252.9831,252.910Sep 101,253.070Jun 24
1922 (5 days)1,253.0321,252.830Nov 21,253.190Jul 11
1921 (5 days)1,252.4361,252.360Sep 221,252.570Jul 25
1920 (5 days)1,252.3561,252.080Oct 111,252.430May 22
1919 (4 days)1,252.0931,251.940Oct 291,252.410May 20
1918 (4 days)1,252.3701,252.270Oct 91,252.470Jul 19
1917 (1 days)1,252.1201,252.120Aug 141,252.120Aug 14

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

Monthly averages

MonthAverageLowestHighest
January1,226.0781,225.4801,226.410
February1,226.0561,225.3001,226.420
March1,226.5291,225.3101,252.810
April1,226.7141,225.3801,253.460
May1,226.4041,225.4501,253.490
June1,226.4171,225.3901,253.340
July1,226.5131,225.5501,253.520
August1,226.3611,225.4501,253.480
September1,226.2401,225.2801,252.910
October1,226.2501,225.2501,252.960
November1,227.2521,225.4401,253.030

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Daily levels as CSV (9,731 rows; credit the original agencies listed below)