Country: Canada
United StatesCanadaUnited Kingdom

Lac la Biche water level history

Daily records since 1930 · Level today: 544.047 m

Highest on record
544.996 m
Sep 24, 1960
Lowest on record
542.619 m
Oct 29, 1992
Today
544.047 m
Oct 23, 2026
Years of data
96
since 1930

In short

Across 28 complete years, 1992 had the lowest average level (542.833 m) and 2020 the highest (543.984 m).

On average the lake is lowest in April (543.267 m) and highest in August (543.529 m).

Lac la Biche level, all years

Loading chart…

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

Each year's lowest and highest level

542.5543.1543.8544.5545.11930194219541966197819902002201420261930: lowest 543.48 m (1930-06-05), highest 544.48 m (1930-08-28), average 544.25 m, 12 days measured1931: lowest 543.34 m (1931-05-05), highest 543.96 m (1931-01-07), average 543.54 m, 7 days measured1933: lowest 543.66 m (1933-05-05), highest 544.04 m (1933-09-29), average 543.91 m, 24 days measured1934: lowest 543.78 m (1934-05-01), highest 544.28 m (1934-08-21), average 544.08 m, 27 days measured1935: lowest 543.78 m (1935-05-10), highest 544.39 m (1935-09-20), average 544.13 m, 26 days measured1936: lowest 543.80 m (1936-09-25), highest 544.04 m (1936-06-05), average 543.92 m, 28 days measured1937: lowest 543.29 m (1937-07-09), highest 543.50 m (1937-09-17), average 543.41 m, 27 days measured1938: lowest 543.24 m (1938-09-12), highest 543.51 m (1938-05-30), average 543.35 m, 27 days measured1939: lowest 543.29 m (1939-10-30), highest 543.52 m (1939-07-10), average 543.42 m, 25 days measured1940: lowest 542.98 m (1940-10-24), highest 543.28 m (1940-06-13), average 543.15 m, 24 days measured1941: lowest 542.98 m (1941-09-27), highest 543.14 m (1941-07-05), average 543.05 m, 27 days measured1942: lowest 543.06 m (1942-05-08), highest 543.29 m (1942-07-18), average 543.22 m, 25 days measured1943: lowest 543.20 m (1943-07-03), highest 543.56 m (1943-08-28), average 543.42 m, 30 days measured1944: lowest 543.19 m (1944-07-01), highest 543.41 m (1944-07-08), average 543.33 m, 31 days measured1945: lowest 543.02 m (1945-10-20), highest 543.12 m (1945-08-11), average 543.08 m, 26 days measured1946: lowest 543.12 m (1946-05-01), highest 543.27 m (1946-06-29), average 543.23 m, 27 days measured1947: lowest 543.24 m (1947-05-05), highest 543.52 m (1947-08-30), average 543.46 m, 27 days measured1948: lowest 543.39 m (1948-05-01), highest 544.06 m (1948-05-29), average 543.88 m, 21 days measured1949: lowest 543.23 m (1949-10-27), highest 543.42 m (1949-05-04), average 543.31 m, 26 days measured1950: lowest 543.18 m (1950-10-21), highest 543.26 m (1950-08-11), average 543.22 m, 27 days measured1951: lowest 543.48 m (1951-05-07), highest 543.95 m (1951-08-31), average 543.83 m, 27 days measured1952: lowest 543.46 m (1952-06-13), highest 543.61 m (1952-07-31), average 543.55 m, 19 days measured1953: lowest 543.18 m (1953-06-19), highest 543.24 m (1953-05-12), average 543.22 m, 26 days measured1954: lowest 543.31 m (1954-05-08), highest 544.23 m (1954-10-09), average 543.92 m, 26 days measured1955: lowest 543.70 m (1955-06-24), highest 543.88 m (1955-09-24), average 543.80 m, 27 days measured1956: lowest 543.95 m (1956-06-09), highest 544.67 m (1956-08-26), average 544.37 m, 31 days measured1957: lowest 543.27 m (1957-09-27), highest 543.66 m (1957-05-02), average 543.52 m, 28 days measured1958: lowest 543.23 m (1958-03-05), highest 543.51 m (1958-06-07), average 543.39 m, 29 days measured1959: lowest 543.22 m (1959-06-20), highest 543.61 m (1959-10-27), average 543.38 m, 27 days measured1960: lowest 543.91 m (1960-06-23), highest 545.00 m (1960-09-24), average 544.63 m, 22 days measured1961: lowest 543.53 m (1961-10-25), highest 544.05 m (1961-07-22), average 543.75 m, 33 days measured1962: lowest 543.45 m (1962-04-25), highest 544.55 m (1962-08-22), average 544.19 m, 32 days measured1963: lowest 543.48 m (1963-10-31), highest 544.02 m (1963-06-23), average 543.86 m, 28 days measured1964: lowest 543.13 m (1964-07-18), highest 543.26 m (1964-10-31), average 543.20 m, 33 days measured1965: lowest 543.39 m (1965-05-05), highest 543.89 m (1965-07-25), average 543.78 m, 31 days measured1966: lowest 543.45 m (1966-05-01), highest 543.80 m (1966-09-18), average 543.64 m, 34 days measured1967: lowest 543.30 m (1967-10-31), highest 543.57 m (1967-06-19), average 543.47 m, 27 days measured1968: lowest 543.04 m (1968-09-15), highest 543.18 m (1968-04-30), average 543.11 m, 35 days measured1969: lowest 543.38 m (1969-05-05), highest 543.75 m (1969-10-14), average 543.62 m, 32 days measured1970: lowest 543.46 m (1970-06-09), highest 544.35 m (1970-09-10), average 543.94 m, 34 days measured1971: lowest 543.84 m (1971-11-03), highest 544.43 m (1971-08-10), average 544.08 m, 32 days measured1972: lowest 543.40 m (1972-10-31), highest 543.65 m (1972-06-26), average 543.56 m, 32 days measured1973: lowest 543.27 m (1973-05-01), highest 543.96 m (1973-09-18), average 543.70 m, 30 days measured1974: lowest 543.99 m (1974-10-31), highest 544.32 m (1974-07-31), average 544.22 m, 145 days measured1975: lowest 543.47 m (1975-04-15), highest 544.38 m (1975-09-25), average 544.00 m, 143 days measured1976: lowest 543.30 m (1976-06-18), highest 543.65 m (1976-08-27), average 543.52 m, 146 days measured1977: lowest 543.30 m (1977-05-01), highest 543.48 m (1977-08-11), average 543.44 m, 128 days measured1978: lowest 543.21 m (1978-03-01), highest 543.65 m (1978-10-31), average 543.46 m, 107 days measured1979: lowest 543.44 m (1979-04-03), highest 544.10 m (1979-08-07), average 543.90 m, 175 days measured1980: lowest 543.25 m (1980-07-22), highest 543.47 m (1980-10-22), average 543.36 m, 189 days measured1981: lowest 542.73 m (1981-11-10), highest 543.44 m (1981-03-10), average 543.23 m, 143 days measured1982: lowest 542.98 m (1982-10-29), highest 543.18 m (1982-05-16), average 543.13 m, 149 days measured1983: lowest 542.99 m (1983-03-09), highest 543.38 m (1983-08-01), average 543.21 m, 96 days measured1984: lowest 543.18 m (1984-05-13), highest 543.44 m (1984-07-21), average 543.40 m, 65 days measured1985: lowest 543.36 m (1985-04-08), highest 543.77 m (1985-08-07), average 543.52 m, 68 days measured1986: lowest 543.25 m (1986-12-13), highest 543.51 m (1986-08-19), average 543.35 m, 365 days measured1987: lowest 543.00 m (1987-12-26), highest 543.36 m (1987-06-13), average 543.23 m, 351 days measured1988: lowest 542.90 m (1988-11-22), highest 543.16 m (1988-08-12), average 543.02 m, 328 days measured1989: lowest 542.78 m (1989-01-01), highest 543.16 m (1989-12-28), average 543.05 m, 317 days measured1990: lowest 543.04 m (1990-05-29), highest 543.51 m (1990-07-13), average 543.28 m, 340 days measured1991: lowest 542.92 m (1991-11-26), highest 543.26 m (1991-07-05), average 543.14 m, 268 days measured1992: lowest 542.62 m (1992-10-29), highest 542.98 m (1992-05-15), average 542.83 m, 334 days measured1993: lowest 542.66 m (1993-01-05), highest 542.81 m (1993-05-12), average 542.75 m, 259 days measured1994: lowest 542.77 m (1994-01-01), highest 543.17 m (1994-08-11), average 542.99 m, 278 days measured1995: lowest 542.97 m (1995-06-11), highest 543.07 m (1995-09-03), average 543.01 m, 365 days measured1996: lowest 543.03 m (1996-01-10), highest 544.24 m (1996-10-28), average 543.77 m, 278 days measured1997: lowest 543.69 m (1997-12-31), highest 544.69 m (1997-07-19), average 544.11 m, 297 days measured1998: lowest 542.92 m (1998-11-21), highest 543.68 m (1998-01-01), average 543.24 m, 326 days measured1999: lowest 542.63 m (1999-11-09), highest 543.01 m (1999-05-29), average 542.84 m, 340 days measured2000: lowest 542.68 m (2000-02-03), highest 543.11 m (2000-08-27), average 542.92 m, 271 days measured2001: lowest 542.82 m (2001-11-26), highest 543.09 m (2001-08-04), average 542.96 m, 229 days measured2002: lowest 542.78 m (2002-10-30), highest 542.97 m (2002-07-20), average 542.85 m, 365 days measured2003: lowest 542.78 m (2003-01-09), highest 543.51 m (2003-08-17), average 543.20 m, 346 days measured2004: lowest 543.33 m (2004-01-04), highest 543.65 m (2004-10-19), average 543.48 m, 366 days measured2005: lowest 543.43 m (2005-04-08), highest 544.14 m (2005-08-29), average 543.75 m, 365 days measured2006: lowest 543.37 m (2006-11-10), highest 543.64 m (2006-01-12), average 543.49 m, 322 days measured2007: lowest 543.35 m (2007-01-08), highest 543.69 m (2007-07-16), average 543.49 m, 287 days measured2008: lowest 543.33 m (2008-04-19), highest 543.55 m (2008-09-22), average 543.42 m, 366 days measured2009: lowest 543.35 m (2009-12-31), highest 543.77 m (2009-07-19), average 543.55 m, 365 days measured2010: lowest 543.28 m (2010-04-07), highest 543.70 m (2010-09-20), average 543.47 m, 365 days measured2011: lowest 543.32 m (2011-12-28), highest 543.78 m (2011-08-15), average 543.54 m, 365 days measured2012: lowest 543.10 m (2012-11-13), highest 543.32 m (2012-01-06), average 543.23 m, 366 days measured2013: lowest 543.12 m (2013-01-02), highest 543.67 m (2013-08-31), average 543.38 m, 365 days measured2014: lowest 543.37 m (2014-04-22), highest 543.82 m (2014-08-12), average 543.58 m, 365 days measured2015: lowest 543.18 m (2015-12-31), highest 543.61 m (2015-01-01), average 543.40 m, 365 days measured2016: lowest 543.18 m (2016-01-05), highest 543.69 m (2016-11-14), average 543.43 m, 366 days measured2017: lowest 543.56 m (2017-04-11), highest 544.33 m (2017-09-10), average 543.91 m, 365 days measured2018: lowest 543.52 m (2018-12-29), highest 544.05 m (2018-01-02), average 543.79 m, 365 days measured2019: lowest 543.30 m (2019-06-11), highest 543.78 m (2019-10-26), average 543.57 m, 365 days measured2020: lowest 543.53 m (2020-04-19), highest 544.69 m (2020-08-07), average 543.98 m, 366 days measured2021: lowest 543.12 m (2021-11-12), highest 543.75 m (2021-01-01), average 543.44 m, 365 days measured2022: lowest 543.15 m (2022-01-01), highest 543.64 m (2022-08-05), average 543.39 m, 365 days measured2023: lowest 543.29 m (2023-12-31), highest 543.61 m (2023-08-31), average 543.40 m, 365 days measured2024: lowest 543.18 m (2024-04-28), highest 543.43 m (2024-08-06), average 543.30 m, 366 days measured2025: lowest 542.94 m (2025-10-24), highest 543.34 m (2025-02-01), average 543.18 m, 365 days measured2026: lowest 544.05 m (2026-10-21), highest 544.32 m (2026-09-22), average 544.18 m, 30 days measured
542.5543.1543.8544.5545.1193019541978200220261930: lowest 543.48 m (1930-06-05), highest 544.48 m (1930-08-28), average 544.25 m, 12 days measured1931: lowest 543.34 m (1931-05-05), highest 543.96 m (1931-01-07), average 543.54 m, 7 days measured1933: lowest 543.66 m (1933-05-05), highest 544.04 m (1933-09-29), average 543.91 m, 24 days measured1934: lowest 543.78 m (1934-05-01), highest 544.28 m (1934-08-21), average 544.08 m, 27 days measured1935: lowest 543.78 m (1935-05-10), highest 544.39 m (1935-09-20), average 544.13 m, 26 days measured1936: lowest 543.80 m (1936-09-25), highest 544.04 m (1936-06-05), average 543.92 m, 28 days measured1937: lowest 543.29 m (1937-07-09), highest 543.50 m (1937-09-17), average 543.41 m, 27 days measured1938: lowest 543.24 m (1938-09-12), highest 543.51 m (1938-05-30), average 543.35 m, 27 days measured1939: lowest 543.29 m (1939-10-30), highest 543.52 m (1939-07-10), average 543.42 m, 25 days measured1940: lowest 542.98 m (1940-10-24), highest 543.28 m (1940-06-13), average 543.15 m, 24 days measured1941: lowest 542.98 m (1941-09-27), highest 543.14 m (1941-07-05), average 543.05 m, 27 days measured1942: lowest 543.06 m (1942-05-08), highest 543.29 m (1942-07-18), average 543.22 m, 25 days measured1943: lowest 543.20 m (1943-07-03), highest 543.56 m (1943-08-28), average 543.42 m, 30 days measured1944: lowest 543.19 m (1944-07-01), highest 543.41 m (1944-07-08), average 543.33 m, 31 days measured1945: lowest 543.02 m (1945-10-20), highest 543.12 m (1945-08-11), average 543.08 m, 26 days measured1946: lowest 543.12 m (1946-05-01), highest 543.27 m (1946-06-29), average 543.23 m, 27 days measured1947: lowest 543.24 m (1947-05-05), highest 543.52 m (1947-08-30), average 543.46 m, 27 days measured1948: lowest 543.39 m (1948-05-01), highest 544.06 m (1948-05-29), average 543.88 m, 21 days measured1949: lowest 543.23 m (1949-10-27), highest 543.42 m (1949-05-04), average 543.31 m, 26 days measured1950: lowest 543.18 m (1950-10-21), highest 543.26 m (1950-08-11), average 543.22 m, 27 days measured1951: lowest 543.48 m (1951-05-07), highest 543.95 m (1951-08-31), average 543.83 m, 27 days measured1952: lowest 543.46 m (1952-06-13), highest 543.61 m (1952-07-31), average 543.55 m, 19 days measured1953: lowest 543.18 m (1953-06-19), highest 543.24 m (1953-05-12), average 543.22 m, 26 days measured1954: lowest 543.31 m (1954-05-08), highest 544.23 m (1954-10-09), average 543.92 m, 26 days measured1955: lowest 543.70 m (1955-06-24), highest 543.88 m (1955-09-24), average 543.80 m, 27 days measured1956: lowest 543.95 m (1956-06-09), highest 544.67 m (1956-08-26), average 544.37 m, 31 days measured1957: lowest 543.27 m (1957-09-27), highest 543.66 m (1957-05-02), average 543.52 m, 28 days measured1958: lowest 543.23 m (1958-03-05), highest 543.51 m (1958-06-07), average 543.39 m, 29 days measured1959: lowest 543.22 m (1959-06-20), highest 543.61 m (1959-10-27), average 543.38 m, 27 days measured1960: lowest 543.91 m (1960-06-23), highest 545.00 m (1960-09-24), average 544.63 m, 22 days measured1961: lowest 543.53 m (1961-10-25), highest 544.05 m (1961-07-22), average 543.75 m, 33 days measured1962: lowest 543.45 m (1962-04-25), highest 544.55 m (1962-08-22), average 544.19 m, 32 days measured1963: lowest 543.48 m (1963-10-31), highest 544.02 m (1963-06-23), average 543.86 m, 28 days measured1964: lowest 543.13 m (1964-07-18), highest 543.26 m (1964-10-31), average 543.20 m, 33 days measured1965: lowest 543.39 m (1965-05-05), highest 543.89 m (1965-07-25), average 543.78 m, 31 days measured1966: lowest 543.45 m (1966-05-01), highest 543.80 m (1966-09-18), average 543.64 m, 34 days measured1967: lowest 543.30 m (1967-10-31), highest 543.57 m (1967-06-19), average 543.47 m, 27 days measured1968: lowest 543.04 m (1968-09-15), highest 543.18 m (1968-04-30), average 543.11 m, 35 days measured1969: lowest 543.38 m (1969-05-05), highest 543.75 m (1969-10-14), average 543.62 m, 32 days measured1970: lowest 543.46 m (1970-06-09), highest 544.35 m (1970-09-10), average 543.94 m, 34 days measured1971: lowest 543.84 m (1971-11-03), highest 544.43 m (1971-08-10), average 544.08 m, 32 days measured1972: lowest 543.40 m (1972-10-31), highest 543.65 m (1972-06-26), average 543.56 m, 32 days measured1973: lowest 543.27 m (1973-05-01), highest 543.96 m (1973-09-18), average 543.70 m, 30 days measured1974: lowest 543.99 m (1974-10-31), highest 544.32 m (1974-07-31), average 544.22 m, 145 days measured1975: lowest 543.47 m (1975-04-15), highest 544.38 m (1975-09-25), average 544.00 m, 143 days measured1976: lowest 543.30 m (1976-06-18), highest 543.65 m (1976-08-27), average 543.52 m, 146 days measured1977: lowest 543.30 m (1977-05-01), highest 543.48 m (1977-08-11), average 543.44 m, 128 days measured1978: lowest 543.21 m (1978-03-01), highest 543.65 m (1978-10-31), average 543.46 m, 107 days measured1979: lowest 543.44 m (1979-04-03), highest 544.10 m (1979-08-07), average 543.90 m, 175 days measured1980: lowest 543.25 m (1980-07-22), highest 543.47 m (1980-10-22), average 543.36 m, 189 days measured1981: lowest 542.73 m (1981-11-10), highest 543.44 m (1981-03-10), average 543.23 m, 143 days measured1982: lowest 542.98 m (1982-10-29), highest 543.18 m (1982-05-16), average 543.13 m, 149 days measured1983: lowest 542.99 m (1983-03-09), highest 543.38 m (1983-08-01), average 543.21 m, 96 days measured1984: lowest 543.18 m (1984-05-13), highest 543.44 m (1984-07-21), average 543.40 m, 65 days measured1985: lowest 543.36 m (1985-04-08), highest 543.77 m (1985-08-07), average 543.52 m, 68 days measured1986: lowest 543.25 m (1986-12-13), highest 543.51 m (1986-08-19), average 543.35 m, 365 days measured1987: lowest 543.00 m (1987-12-26), highest 543.36 m (1987-06-13), average 543.23 m, 351 days measured1988: lowest 542.90 m (1988-11-22), highest 543.16 m (1988-08-12), average 543.02 m, 328 days measured1989: lowest 542.78 m (1989-01-01), highest 543.16 m (1989-12-28), average 543.05 m, 317 days measured1990: lowest 543.04 m (1990-05-29), highest 543.51 m (1990-07-13), average 543.28 m, 340 days measured1991: lowest 542.92 m (1991-11-26), highest 543.26 m (1991-07-05), average 543.14 m, 268 days measured1992: lowest 542.62 m (1992-10-29), highest 542.98 m (1992-05-15), average 542.83 m, 334 days measured1993: lowest 542.66 m (1993-01-05), highest 542.81 m (1993-05-12), average 542.75 m, 259 days measured1994: lowest 542.77 m (1994-01-01), highest 543.17 m (1994-08-11), average 542.99 m, 278 days measured1995: lowest 542.97 m (1995-06-11), highest 543.07 m (1995-09-03), average 543.01 m, 365 days measured1996: lowest 543.03 m (1996-01-10), highest 544.24 m (1996-10-28), average 543.77 m, 278 days measured1997: lowest 543.69 m (1997-12-31), highest 544.69 m (1997-07-19), average 544.11 m, 297 days measured1998: lowest 542.92 m (1998-11-21), highest 543.68 m (1998-01-01), average 543.24 m, 326 days measured1999: lowest 542.63 m (1999-11-09), highest 543.01 m (1999-05-29), average 542.84 m, 340 days measured2000: lowest 542.68 m (2000-02-03), highest 543.11 m (2000-08-27), average 542.92 m, 271 days measured2001: lowest 542.82 m (2001-11-26), highest 543.09 m (2001-08-04), average 542.96 m, 229 days measured2002: lowest 542.78 m (2002-10-30), highest 542.97 m (2002-07-20), average 542.85 m, 365 days measured2003: lowest 542.78 m (2003-01-09), highest 543.51 m (2003-08-17), average 543.20 m, 346 days measured2004: lowest 543.33 m (2004-01-04), highest 543.65 m (2004-10-19), average 543.48 m, 366 days measured2005: lowest 543.43 m (2005-04-08), highest 544.14 m (2005-08-29), average 543.75 m, 365 days measured2006: lowest 543.37 m (2006-11-10), highest 543.64 m (2006-01-12), average 543.49 m, 322 days measured2007: lowest 543.35 m (2007-01-08), highest 543.69 m (2007-07-16), average 543.49 m, 287 days measured2008: lowest 543.33 m (2008-04-19), highest 543.55 m (2008-09-22), average 543.42 m, 366 days measured2009: lowest 543.35 m (2009-12-31), highest 543.77 m (2009-07-19), average 543.55 m, 365 days measured2010: lowest 543.28 m (2010-04-07), highest 543.70 m (2010-09-20), average 543.47 m, 365 days measured2011: lowest 543.32 m (2011-12-28), highest 543.78 m (2011-08-15), average 543.54 m, 365 days measured2012: lowest 543.10 m (2012-11-13), highest 543.32 m (2012-01-06), average 543.23 m, 366 days measured2013: lowest 543.12 m (2013-01-02), highest 543.67 m (2013-08-31), average 543.38 m, 365 days measured2014: lowest 543.37 m (2014-04-22), highest 543.82 m (2014-08-12), average 543.58 m, 365 days measured2015: lowest 543.18 m (2015-12-31), highest 543.61 m (2015-01-01), average 543.40 m, 365 days measured2016: lowest 543.18 m (2016-01-05), highest 543.69 m (2016-11-14), average 543.43 m, 366 days measured2017: lowest 543.56 m (2017-04-11), highest 544.33 m (2017-09-10), average 543.91 m, 365 days measured2018: lowest 543.52 m (2018-12-29), highest 544.05 m (2018-01-02), average 543.79 m, 365 days measured2019: lowest 543.30 m (2019-06-11), highest 543.78 m (2019-10-26), average 543.57 m, 365 days measured2020: lowest 543.53 m (2020-04-19), highest 544.69 m (2020-08-07), average 543.98 m, 366 days measured2021: lowest 543.12 m (2021-11-12), highest 543.75 m (2021-01-01), average 543.44 m, 365 days measured2022: lowest 543.15 m (2022-01-01), highest 543.64 m (2022-08-05), average 543.39 m, 365 days measured2023: lowest 543.29 m (2023-12-31), highest 543.61 m (2023-08-31), average 543.40 m, 365 days measured2024: lowest 543.18 m (2024-04-28), highest 543.43 m (2024-08-06), average 543.30 m, 366 days measured2025: lowest 542.94 m (2025-10-24), highest 543.34 m (2025-02-01), average 543.18 m, 365 days measured2026: lowest 544.05 m (2026-10-21), highest 544.32 m (2026-09-22), average 544.18 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.

  • 1992542.619 m on Oct 29
  • 1999542.628 m on Nov 9
  • 2002542.777 m on Oct 30
  • 2003542.778 m on Jan 9
  • 2025542.935 m on Oct 24

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)544.176544.053Oct 21544.322Sep 22
2025543.175542.935Oct 24543.338Feb 1
2024543.299543.176Apr 28543.430Aug 6
2023543.401543.286Dec 31543.614Aug 31
2022543.394543.151Jan 1543.641Aug 5
2021543.441543.121Nov 12543.754Jan 1
2020543.984543.529Apr 19544.692Aug 7
2019543.567543.304Jun 11543.782Oct 26
2018543.790543.517Dec 29544.045Jan 2
2017543.909543.555Apr 11544.326Sep 10
2016543.434543.179Jan 5543.690Nov 14
2015543.399543.183Dec 31543.612Jan 1
2014543.583543.370Apr 22543.819Aug 12
2013543.379543.115Jan 2543.668Aug 31
2012543.227543.102Nov 13543.320Jan 6
2011543.541543.318Dec 28543.779Aug 15
2010543.474543.281Apr 7543.701Sep 20
2009543.550543.348Dec 31543.772Jul 19
2008543.422543.326Apr 19543.551Sep 22
2007 (287 days)543.493543.346Jan 8543.686Jul 16
2006 (322 days)543.491543.368Nov 10543.640Jan 12
2005543.747543.426Apr 8544.142Aug 29
2004543.481543.334Jan 4543.648Oct 19
2003543.201542.778Jan 9543.509Aug 17
2002542.853542.777Oct 30542.965Jul 20
2001 (229 days)542.960542.820Nov 26543.091Aug 4
2000 (271 days)542.922542.677Feb 3543.109Aug 27
1999542.845542.628Nov 9543.011May 29
1998 (326 days)543.238542.921Nov 21543.684Jan 1
1997 (297 days)544.106543.688Dec 31544.688Jul 19
1996 (278 days)543.768543.028Jan 10544.235Oct 28
1995543.012542.974Jun 11543.068Sep 3
1994 (278 days)542.994542.768Jan 1543.166Aug 11
1993 (259 days)542.754542.660Jan 5542.809May 12
1992542.833542.619Oct 29542.981May 15
1991 (268 days)543.139542.916Nov 26543.262Jul 5
1990543.281543.040May 29543.507Jul 13
1989 (317 days)543.052542.775Jan 1543.164Dec 28
1988 (328 days)543.016542.900Nov 22543.155Aug 12
1987543.231542.996Dec 26543.362Jun 13
1986543.349543.246Dec 13543.505Aug 19
1985 (68 days)543.519543.362Apr 8543.774Aug 7
1984 (65 days)543.399543.176May 13543.436Jul 21
1983 (96 days)543.211542.992Mar 9543.379Aug 1
1982 (149 days)543.132542.978Oct 29543.178May 16
1981 (143 days)543.230542.731Nov 10543.436Mar 10
1980 (189 days)543.363543.253Jul 22543.466Oct 22
1979 (175 days)543.896543.440Apr 3544.095Aug 7
1978 (107 days)543.456543.207Mar 1543.649Oct 31
1977 (128 days)543.442543.295May 1543.475Aug 11
1976 (146 days)543.523543.301Jun 18543.649Aug 27
1975 (143 days)543.996543.466Apr 15544.380Sep 25
1974 (145 days)544.225543.993Oct 31544.322Jul 31
1973 (30 days)543.704543.265May 1543.960Sep 18
1972 (32 days)543.564543.402Oct 31543.649Jun 26
1971 (32 days)544.075543.835Nov 3544.432Aug 10
1970 (34 days)543.940543.460Jun 9544.350Sep 10
1969 (32 days)543.619543.380May 5543.752Oct 14
1968 (35 days)543.106543.039Sep 15543.182Apr 30
1967 (27 days)543.473543.295Oct 31543.569Jun 19
1966 (34 days)543.642543.451May 1543.795Sep 18
1965 (31 days)543.778543.390May 5543.893Jul 25
1964 (33 days)543.203543.127Jul 18543.262Oct 31
1963 (28 days)543.858543.475Oct 31544.024Jun 23
1962 (32 days)544.188543.451Apr 25544.551Aug 22
1961 (33 days)543.747543.527Oct 25544.054Jul 22
1960 (22 days)544.631543.908Jun 23544.996Sep 24
1959 (27 days)543.382543.222Jun 20543.612Oct 27
1958 (29 days)543.391543.228Mar 5543.512Jun 7
1957 (28 days)543.524543.271Sep 27543.655May 2
1956 (31 days)544.366543.947Jun 9544.673Aug 26
1955 (27 days)543.805543.704Jun 24543.880Sep 24
1954 (26 days)543.921543.310May 8544.231Oct 9
1953 (26 days)543.217543.179Jun 19543.240May 12
1952 (19 days)543.546543.457Jun 13543.609Jul 31
1951 (27 days)543.834543.475May 7543.947Aug 31
1950 (27 days)543.216543.179Oct 21543.255Aug 11
1949 (26 days)543.309543.225Oct 27543.423May 4
1948 (21 days)543.879543.387May 1544.057May 29
1947 (27 days)543.455543.243May 5543.518Aug 30
1946 (27 days)543.234543.121May 1543.274Jun 29
1945 (26 days)543.079543.015Oct 20543.121Aug 11
1944 (31 days)543.330543.188Jul 1543.411Jul 8
1943 (30 days)543.419543.198Jul 3543.563Aug 28
1942 (25 days)543.217543.060May 8543.289Jul 18
1941 (27 days)543.050542.984Sep 27543.137Jul 5
1940 (24 days)543.150542.975Oct 24543.280Jun 13
1939 (25 days)543.416543.289Oct 30543.518Jul 10
1938 (27 days)543.345543.237Sep 12543.512May 30
1937 (27 days)543.412543.289Jul 9543.502Sep 17
1936 (28 days)543.916543.795Sep 25544.039Jun 5
1935 (26 days)544.132543.783May 10544.386Sep 20
1934 (27 days)544.078543.783May 1544.283Aug 21
1933 (24 days)543.908543.655May 5544.039Sep 29
1931 (7 days)543.536543.335May 5543.960Jan 7
1930 (12 days)544.247543.484Jun 5544.481Aug 28

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

Monthly averages

MonthAverageLowestHighest
January543.336542.660544.146
February543.321542.665544.014
March543.295542.669544.045
April543.267542.668544.020
May543.357542.751544.310
June543.411542.719544.515
July543.484542.762544.688
August543.529542.705544.813
September543.507542.680544.996
October543.440542.619544.914
November543.332542.628544.251
December543.296542.638544.204

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Daily levels as CSV (16,325 rows; credit the original agencies listed below)