Country: Canada
United StatesCanadaUnited Kingdom

Lac la Ronge water level history

Daily records since 1930 · Level today: 364.107 m

Highest on record
364.967 m
Aug 12, 2020
Lowest on record
362.395 m
Apr 25, 1942
Today
364.107 m
Oct 23, 2026
Years of data
96
since 1930

In short

Across 48 complete years, 1993 had the lowest average level (363.743 m) and 2020 the highest (364.486 m).

On average the lake is lowest in March (363.949 m) and highest in July (364.147 m).

Lac la Ronge level, all years

Loading chart…

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

Each year's lowest and highest level

362.2363.0363.7364.4365.11930194219541966197819902002201420261930: lowest 363.26 m (1930-12-24), highest 363.46 m (1930-07-16), average 363.34 m, 22 days measured1931: lowest 363.19 m (1931-03-18), highest 363.74 m (1931-12-30), average 363.48 m, 42 days measured1932: lowest 363.67 m (1932-04-13), highest 364.19 m (1932-09-14), average 363.95 m, 39 days measured1933: lowest 363.90 m (1933-04-11), highest 364.38 m (1933-08-09), average 364.18 m, 34 days measured1934: lowest 363.98 m (1934-03-21), highest 364.60 m (1934-08-22), average 364.31 m, 41 days measured1935: lowest 363.85 m (1935-12-31), highest 364.35 m (1935-01-09), average 364.08 m, 39 days measured1936: lowest 363.33 m (1936-12-30), highest 363.83 m (1936-01-08), average 363.59 m, 44 days measured1937: lowest 362.86 m (1937-12-28), highest 363.32 m (1937-01-06), average 363.18 m, 48 days measured1938: lowest 362.67 m (1938-12-31), highest 362.85 m (1938-01-04), average 362.76 m, 51 days measured1939: lowest 362.63 m (1939-03-18), highest 362.99 m (1939-07-22), average 362.78 m, 52 days measured1940: lowest 362.51 m (1940-12-28), highest 362.85 m (1940-06-01), average 362.71 m, 52 days measured1941: lowest 362.47 m (1941-12-20), highest 362.69 m (1941-06-28), average 362.53 m, 52 days measured1942: lowest 362.40 m (1942-04-25), highest 362.82 m (1942-08-29), average 362.59 m, 52 days measured1943: lowest 362.62 m (1943-03-27), highest 363.02 m (1943-07-24), average 362.85 m, 52 days measured1944: lowest 362.95 m (1944-03-11), highest 363.15 m (1944-08-19), average 363.03 m, 53 days measured1945: lowest 362.95 m (1945-03-31), highest 363.26 m (1945-07-21), average 363.12 m, 50 days measured1946: lowest 363.11 m (1946-04-06), highest 363.38 m (1946-09-07), average 363.25 m, 52 days measured1947: lowest 363.20 m (1947-04-25), highest 363.46 m (1947-07-05), average 363.35 m, 53 days measured1948: lowest 363.33 m (1948-12-18), highest 363.46 m (1948-06-26), average 363.39 m, 51 days measured1949: lowest 363.26 m (1949-04-16), highest 363.43 m (1949-08-13), average 363.33 m, 55 days measured1950: lowest 363.24 m (1950-05-13), highest 363.43 m (1950-08-19), average 363.33 m, 50 days measured1951: lowest 363.24 m (1951-04-21), highest 363.71 m (1951-09-15), average 363.48 m, 53 days measured1952: lowest 363.49 m (1952-04-26), highest 363.70 m (1952-08-02), average 363.58 m, 53 days measured1953: lowest 363.23 m (1953-12-19), highest 363.53 m (1953-08-15), average 363.44 m, 52 days measured1954: lowest 363.13 m (1954-04-24), highest 364.27 m (1954-10-23), average 363.64 m, 53 days measured1955: lowest 364.10 m (1955-11-05), highest 364.75 m (1955-06-18), average 364.36 m, 45 days measured1956: lowest 363.53 m (1956-05-05), highest 364.10 m (1956-01-03), average 363.78 m, 21 days measured1957: lowest 363.64 m (1957-01-31), highest 363.84 m (1957-07-31), average 363.72 m, 5 days measured1959: lowest 363.52 m (1959-03-10), highest 363.86 m (1959-07-19), average 363.66 m, 46 days measured1960: lowest 363.47 m (1960-03-27), highest 364.02 m (1960-07-10), average 363.73 m, 52 days measured1961: lowest 363.45 m (1961-11-05), highest 363.90 m (1961-06-05), average 363.65 m, 54 days measured1962: lowest 363.30 m (1962-12-02), highest 363.70 m (1962-06-25), average 363.46 m, 52 days measured1963: lowest 363.27 m (1963-04-29), highest 363.76 m (1963-08-15), average 363.52 m, 78 days measured1964: lowest 363.43 m (1964-08-30), highest 363.62 m (1964-05-24), average 363.51 m, 95 days measured1965: lowest 363.46 m (1965-02-01), highest 363.86 m (1965-08-01), average 363.66 m, 59 days measured1966: lowest 363.68 m (1966-05-15), highest 363.98 m (1966-08-28), average 363.79 m, 56 days measured1967: lowest 363.65 m (1967-11-12), highest 363.96 m (1967-08-13), average 363.76 m, 60 days measured1968: lowest 363.64 m (1968-12-22), highest 363.95 m (1968-07-07), average 363.82 m, 77 days measured1969: lowest 363.57 m (1969-10-20), highest 363.79 m (1969-06-29), average 363.66 m, 57 days measured1970: lowest 363.66 m (1970-01-05), highest 364.44 m (1970-08-23), average 364.05 m, 60 days measured1971: lowest 363.77 m (1971-12-12), highest 364.14 m (1971-08-22), average 363.95 m, 56 days measured1972: lowest 363.57 m (1972-11-19), highest 363.91 m (1972-06-18), average 363.71 m, 64 days measured1973: lowest 363.66 m (1973-01-04), highest 364.34 m (1973-07-22), average 364.07 m, 88 days measured1974: lowest 364.00 m (1974-04-16), highest 364.62 m (1974-08-14), average 364.29 m, 365 days measured1975: lowest 363.76 m (1975-12-27), highest 364.25 m (1975-01-01), average 364.02 m, 353 days measured1976: lowest 363.66 m (1976-04-14), highest 363.93 m (1976-08-07), average 363.76 m, 366 days measured1977: lowest 363.71 m (1977-01-10), highest 364.14 m (1977-07-28), average 364.01 m, 229 days measured1978: lowest 363.88 m (1978-12-29), highest 364.36 m (1978-07-01), average 364.10 m, 365 days measured1979: lowest 363.75 m (1979-05-02), highest 364.02 m (1979-07-24), average 363.89 m, 365 days measured1980: lowest 363.79 m (1980-08-22), highest 364.04 m (1980-12-30), average 363.89 m, 366 days measured1981: lowest 363.74 m (1981-11-07), highest 364.23 m (1981-05-28), average 364.01 m, 365 days measured1982: lowest 363.78 m (1982-01-04), highest 364.09 m (1982-07-06), average 363.90 m, 365 days measured1983: lowest 363.85 m (1983-01-01), highest 364.29 m (1983-07-29), average 364.02 m, 365 days measured1984: lowest 363.83 m (1984-10-29), highest 364.23 m (1984-06-29), average 364.00 m, 366 days measured1985: lowest 363.95 m (1985-01-12), highest 364.41 m (1985-06-24), average 364.13 m, 365 days measured1986: lowest 363.99 m (1986-12-30), highest 364.42 m (1986-08-02), average 364.17 m, 365 days measured1987: lowest 363.78 m (1987-11-19), highest 364.13 m (1987-07-01), average 363.96 m, 365 days measured1988: lowest 363.81 m (1988-01-03), highest 364.05 m (1988-07-21), average 363.92 m, 366 days measured1989: lowest 363.70 m (1989-11-10), highest 364.06 m (1989-07-10), average 363.86 m, 365 days measured1990: lowest 363.69 m (1990-11-09), highest 364.09 m (1990-07-03), average 363.83 m, 365 days measured1991: lowest 363.69 m (1991-10-13), highest 364.03 m (1991-07-20), average 363.81 m, 365 days measured1992: lowest 363.65 m (1992-11-11), highest 363.94 m (1992-06-29), average 363.77 m, 366 days measured1993: lowest 363.69 m (1993-04-07), highest 363.85 m (1993-08-25), average 363.74 m, 365 days measured1994: lowest 363.76 m (1994-01-13), highest 364.30 m (1994-07-16), average 364.02 m, 365 days measured1995: lowest 364.05 m (1995-01-05), highest 364.27 m (1995-08-23), average 364.15 m, 365 days measured1996: lowest 364.13 m (1996-10-30), highest 364.43 m (1996-06-17), average 364.25 m, 309 days measured1997: lowest 364.10 m (1997-09-13), highest 364.40 m (1997-07-05), average 364.25 m, 306 days measured1998: lowest 363.74 m (1998-11-14), highest 364.21 m (1998-01-15), average 364.03 m, 365 days measured1999: lowest 363.72 m (1999-11-04), highest 364.32 m (1999-08-08), average 363.89 m, 365 days measured2000: lowest 363.85 m (2000-01-02), highest 364.36 m (2000-07-22), average 364.09 m, 366 days measured2001: lowest 363.92 m (2001-11-18), highest 364.15 m (2001-07-26), average 364.04 m, 365 days measured2002: lowest 363.95 m (2002-01-11), highest 364.19 m (2002-09-04), average 364.06 m, 365 days measured2003: lowest 363.79 m (2003-11-20), highest 364.29 m (2003-06-21), average 364.05 m, 365 days measured2004: lowest 363.82 m (2004-01-01), highest 364.21 m (2004-09-18), average 364.05 m, 366 days measured2005: lowest 364.10 m (2005-04-10), highest 364.41 m (2005-10-02), average 364.24 m, 365 days measured2006: lowest 364.00 m (2006-04-11), highest 364.27 m (2006-08-11), average 364.12 m, 365 days measured2007: lowest 363.91 m (2007-04-15), highest 364.15 m (2007-12-31), average 364.02 m, 365 days measured2008: lowest 364.06 m (2008-10-26), highest 364.30 m (2008-05-21), average 364.18 m, 366 days measured2009: lowest 364.06 m (2009-12-31), highest 364.33 m (2009-07-22), average 364.16 m, 365 days measured2010: lowest 364.01 m (2010-03-16), highest 364.33 m (2010-08-10), average 364.14 m, 365 days measured2011: lowest 364.03 m (2011-04-22), highest 364.96 m (2011-08-29), average 364.41 m, 365 days measured2012: lowest 364.03 m (2012-09-11), highest 364.51 m (2012-01-02), average 364.20 m, 366 days measured2013: lowest 364.11 m (2013-04-16), highest 364.43 m (2013-07-19), average 364.22 m, 365 days measured2014: lowest 364.02 m (2014-11-18), highest 364.37 m (2014-07-08), average 364.15 m, 365 days measured2015: lowest 363.96 m (2015-04-12), highest 364.10 m (2015-12-27), average 364.02 m, 365 days measured2016: lowest 364.10 m (2016-01-01), highest 364.41 m (2016-06-21), average 364.24 m, 366 days measured2017: lowest 364.14 m (2017-04-07), highest 364.77 m (2017-07-27), average 364.37 m, 365 days measured2018: lowest 363.93 m (2018-04-21), highest 364.41 m (2018-07-31), average 364.17 m, 365 days measured2019: lowest 364.20 m (2019-12-18), highest 364.45 m (2019-07-19), average 364.31 m, 365 days measured2020: lowest 364.11 m (2020-04-20), highest 364.97 m (2020-08-12), average 364.49 m, 366 days measured2021: lowest 364.08 m (2021-11-20), highest 364.47 m (2021-01-01), average 364.23 m, 365 days measured2022: lowest 364.08 m (2022-12-22), highest 364.55 m (2022-08-04), average 364.29 m, 365 days measured2023: lowest 364.01 m (2023-04-21), highest 364.29 m (2023-08-10), average 364.13 m, 365 days measured2024: lowest 363.98 m (2024-11-22), highest 364.37 m (2024-06-28), average 364.11 m, 366 days measured2025: lowest 364.03 m (2025-01-01), highest 364.23 m (2025-06-21), average 364.12 m, 244 days measured2026: lowest 364.07 m (2026-10-18), highest 364.20 m (2026-09-25), average 364.13 m, 30 days measured
362.2363.0363.7364.4365.1193019541978200220261930: lowest 363.26 m (1930-12-24), highest 363.46 m (1930-07-16), average 363.34 m, 22 days measured1931: lowest 363.19 m (1931-03-18), highest 363.74 m (1931-12-30), average 363.48 m, 42 days measured1932: lowest 363.67 m (1932-04-13), highest 364.19 m (1932-09-14), average 363.95 m, 39 days measured1933: lowest 363.90 m (1933-04-11), highest 364.38 m (1933-08-09), average 364.18 m, 34 days measured1934: lowest 363.98 m (1934-03-21), highest 364.60 m (1934-08-22), average 364.31 m, 41 days measured1935: lowest 363.85 m (1935-12-31), highest 364.35 m (1935-01-09), average 364.08 m, 39 days measured1936: lowest 363.33 m (1936-12-30), highest 363.83 m (1936-01-08), average 363.59 m, 44 days measured1937: lowest 362.86 m (1937-12-28), highest 363.32 m (1937-01-06), average 363.18 m, 48 days measured1938: lowest 362.67 m (1938-12-31), highest 362.85 m (1938-01-04), average 362.76 m, 51 days measured1939: lowest 362.63 m (1939-03-18), highest 362.99 m (1939-07-22), average 362.78 m, 52 days measured1940: lowest 362.51 m (1940-12-28), highest 362.85 m (1940-06-01), average 362.71 m, 52 days measured1941: lowest 362.47 m (1941-12-20), highest 362.69 m (1941-06-28), average 362.53 m, 52 days measured1942: lowest 362.40 m (1942-04-25), highest 362.82 m (1942-08-29), average 362.59 m, 52 days measured1943: lowest 362.62 m (1943-03-27), highest 363.02 m (1943-07-24), average 362.85 m, 52 days measured1944: lowest 362.95 m (1944-03-11), highest 363.15 m (1944-08-19), average 363.03 m, 53 days measured1945: lowest 362.95 m (1945-03-31), highest 363.26 m (1945-07-21), average 363.12 m, 50 days measured1946: lowest 363.11 m (1946-04-06), highest 363.38 m (1946-09-07), average 363.25 m, 52 days measured1947: lowest 363.20 m (1947-04-25), highest 363.46 m (1947-07-05), average 363.35 m, 53 days measured1948: lowest 363.33 m (1948-12-18), highest 363.46 m (1948-06-26), average 363.39 m, 51 days measured1949: lowest 363.26 m (1949-04-16), highest 363.43 m (1949-08-13), average 363.33 m, 55 days measured1950: lowest 363.24 m (1950-05-13), highest 363.43 m (1950-08-19), average 363.33 m, 50 days measured1951: lowest 363.24 m (1951-04-21), highest 363.71 m (1951-09-15), average 363.48 m, 53 days measured1952: lowest 363.49 m (1952-04-26), highest 363.70 m (1952-08-02), average 363.58 m, 53 days measured1953: lowest 363.23 m (1953-12-19), highest 363.53 m (1953-08-15), average 363.44 m, 52 days measured1954: lowest 363.13 m (1954-04-24), highest 364.27 m (1954-10-23), average 363.64 m, 53 days measured1955: lowest 364.10 m (1955-11-05), highest 364.75 m (1955-06-18), average 364.36 m, 45 days measured1956: lowest 363.53 m (1956-05-05), highest 364.10 m (1956-01-03), average 363.78 m, 21 days measured1957: lowest 363.64 m (1957-01-31), highest 363.84 m (1957-07-31), average 363.72 m, 5 days measured1959: lowest 363.52 m (1959-03-10), highest 363.86 m (1959-07-19), average 363.66 m, 46 days measured1960: lowest 363.47 m (1960-03-27), highest 364.02 m (1960-07-10), average 363.73 m, 52 days measured1961: lowest 363.45 m (1961-11-05), highest 363.90 m (1961-06-05), average 363.65 m, 54 days measured1962: lowest 363.30 m (1962-12-02), highest 363.70 m (1962-06-25), average 363.46 m, 52 days measured1963: lowest 363.27 m (1963-04-29), highest 363.76 m (1963-08-15), average 363.52 m, 78 days measured1964: lowest 363.43 m (1964-08-30), highest 363.62 m (1964-05-24), average 363.51 m, 95 days measured1965: lowest 363.46 m (1965-02-01), highest 363.86 m (1965-08-01), average 363.66 m, 59 days measured1966: lowest 363.68 m (1966-05-15), highest 363.98 m (1966-08-28), average 363.79 m, 56 days measured1967: lowest 363.65 m (1967-11-12), highest 363.96 m (1967-08-13), average 363.76 m, 60 days measured1968: lowest 363.64 m (1968-12-22), highest 363.95 m (1968-07-07), average 363.82 m, 77 days measured1969: lowest 363.57 m (1969-10-20), highest 363.79 m (1969-06-29), average 363.66 m, 57 days measured1970: lowest 363.66 m (1970-01-05), highest 364.44 m (1970-08-23), average 364.05 m, 60 days measured1971: lowest 363.77 m (1971-12-12), highest 364.14 m (1971-08-22), average 363.95 m, 56 days measured1972: lowest 363.57 m (1972-11-19), highest 363.91 m (1972-06-18), average 363.71 m, 64 days measured1973: lowest 363.66 m (1973-01-04), highest 364.34 m (1973-07-22), average 364.07 m, 88 days measured1974: lowest 364.00 m (1974-04-16), highest 364.62 m (1974-08-14), average 364.29 m, 365 days measured1975: lowest 363.76 m (1975-12-27), highest 364.25 m (1975-01-01), average 364.02 m, 353 days measured1976: lowest 363.66 m (1976-04-14), highest 363.93 m (1976-08-07), average 363.76 m, 366 days measured1977: lowest 363.71 m (1977-01-10), highest 364.14 m (1977-07-28), average 364.01 m, 229 days measured1978: lowest 363.88 m (1978-12-29), highest 364.36 m (1978-07-01), average 364.10 m, 365 days measured1979: lowest 363.75 m (1979-05-02), highest 364.02 m (1979-07-24), average 363.89 m, 365 days measured1980: lowest 363.79 m (1980-08-22), highest 364.04 m (1980-12-30), average 363.89 m, 366 days measured1981: lowest 363.74 m (1981-11-07), highest 364.23 m (1981-05-28), average 364.01 m, 365 days measured1982: lowest 363.78 m (1982-01-04), highest 364.09 m (1982-07-06), average 363.90 m, 365 days measured1983: lowest 363.85 m (1983-01-01), highest 364.29 m (1983-07-29), average 364.02 m, 365 days measured1984: lowest 363.83 m (1984-10-29), highest 364.23 m (1984-06-29), average 364.00 m, 366 days measured1985: lowest 363.95 m (1985-01-12), highest 364.41 m (1985-06-24), average 364.13 m, 365 days measured1986: lowest 363.99 m (1986-12-30), highest 364.42 m (1986-08-02), average 364.17 m, 365 days measured1987: lowest 363.78 m (1987-11-19), highest 364.13 m (1987-07-01), average 363.96 m, 365 days measured1988: lowest 363.81 m (1988-01-03), highest 364.05 m (1988-07-21), average 363.92 m, 366 days measured1989: lowest 363.70 m (1989-11-10), highest 364.06 m (1989-07-10), average 363.86 m, 365 days measured1990: lowest 363.69 m (1990-11-09), highest 364.09 m (1990-07-03), average 363.83 m, 365 days measured1991: lowest 363.69 m (1991-10-13), highest 364.03 m (1991-07-20), average 363.81 m, 365 days measured1992: lowest 363.65 m (1992-11-11), highest 363.94 m (1992-06-29), average 363.77 m, 366 days measured1993: lowest 363.69 m (1993-04-07), highest 363.85 m (1993-08-25), average 363.74 m, 365 days measured1994: lowest 363.76 m (1994-01-13), highest 364.30 m (1994-07-16), average 364.02 m, 365 days measured1995: lowest 364.05 m (1995-01-05), highest 364.27 m (1995-08-23), average 364.15 m, 365 days measured1996: lowest 364.13 m (1996-10-30), highest 364.43 m (1996-06-17), average 364.25 m, 309 days measured1997: lowest 364.10 m (1997-09-13), highest 364.40 m (1997-07-05), average 364.25 m, 306 days measured1998: lowest 363.74 m (1998-11-14), highest 364.21 m (1998-01-15), average 364.03 m, 365 days measured1999: lowest 363.72 m (1999-11-04), highest 364.32 m (1999-08-08), average 363.89 m, 365 days measured2000: lowest 363.85 m (2000-01-02), highest 364.36 m (2000-07-22), average 364.09 m, 366 days measured2001: lowest 363.92 m (2001-11-18), highest 364.15 m (2001-07-26), average 364.04 m, 365 days measured2002: lowest 363.95 m (2002-01-11), highest 364.19 m (2002-09-04), average 364.06 m, 365 days measured2003: lowest 363.79 m (2003-11-20), highest 364.29 m (2003-06-21), average 364.05 m, 365 days measured2004: lowest 363.82 m (2004-01-01), highest 364.21 m (2004-09-18), average 364.05 m, 366 days measured2005: lowest 364.10 m (2005-04-10), highest 364.41 m (2005-10-02), average 364.24 m, 365 days measured2006: lowest 364.00 m (2006-04-11), highest 364.27 m (2006-08-11), average 364.12 m, 365 days measured2007: lowest 363.91 m (2007-04-15), highest 364.15 m (2007-12-31), average 364.02 m, 365 days measured2008: lowest 364.06 m (2008-10-26), highest 364.30 m (2008-05-21), average 364.18 m, 366 days measured2009: lowest 364.06 m (2009-12-31), highest 364.33 m (2009-07-22), average 364.16 m, 365 days measured2010: lowest 364.01 m (2010-03-16), highest 364.33 m (2010-08-10), average 364.14 m, 365 days measured2011: lowest 364.03 m (2011-04-22), highest 364.96 m (2011-08-29), average 364.41 m, 365 days measured2012: lowest 364.03 m (2012-09-11), highest 364.51 m (2012-01-02), average 364.20 m, 366 days measured2013: lowest 364.11 m (2013-04-16), highest 364.43 m (2013-07-19), average 364.22 m, 365 days measured2014: lowest 364.02 m (2014-11-18), highest 364.37 m (2014-07-08), average 364.15 m, 365 days measured2015: lowest 363.96 m (2015-04-12), highest 364.10 m (2015-12-27), average 364.02 m, 365 days measured2016: lowest 364.10 m (2016-01-01), highest 364.41 m (2016-06-21), average 364.24 m, 366 days measured2017: lowest 364.14 m (2017-04-07), highest 364.77 m (2017-07-27), average 364.37 m, 365 days measured2018: lowest 363.93 m (2018-04-21), highest 364.41 m (2018-07-31), average 364.17 m, 365 days measured2019: lowest 364.20 m (2019-12-18), highest 364.45 m (2019-07-19), average 364.31 m, 365 days measured2020: lowest 364.11 m (2020-04-20), highest 364.97 m (2020-08-12), average 364.49 m, 366 days measured2021: lowest 364.08 m (2021-11-20), highest 364.47 m (2021-01-01), average 364.23 m, 365 days measured2022: lowest 364.08 m (2022-12-22), highest 364.55 m (2022-08-04), average 364.29 m, 365 days measured2023: lowest 364.01 m (2023-04-21), highest 364.29 m (2023-08-10), average 364.13 m, 365 days measured2024: lowest 363.98 m (2024-11-22), highest 364.37 m (2024-06-28), average 364.11 m, 366 days measured2025: lowest 364.03 m (2025-01-01), highest 364.23 m (2025-06-21), average 364.12 m, 244 days measured2026: lowest 364.07 m (2026-10-18), highest 364.20 m (2026-09-25), average 364.13 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.

  • 1992363.648 m on Nov 11
  • 1976363.660 m on Apr 14
  • 1991363.690 m on Oct 13
  • 1990363.691 m on Nov 9
  • 1993363.693 m on Apr 7

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)364.135364.075Oct 18364.201Sep 25
2025 (244 days)364.124364.033Jan 1364.227Jun 21
2024364.107363.981Nov 22364.370Jun 28
2023364.129364.009Apr 21364.289Aug 10
2022364.285364.082Dec 22364.546Aug 4
2021364.228364.083Nov 20364.473Jan 1
2020364.486364.106Apr 20364.967Aug 12
2019364.306364.198Dec 18364.445Jul 19
2018364.174363.930Apr 21364.412Jul 31
2017364.368364.135Apr 7364.768Jul 27
2016364.242364.097Jan 1364.412Jun 21
2015364.018363.959Apr 12364.096Dec 27
2014364.150364.019Nov 18364.370Jul 8
2013364.222364.111Apr 16364.431Jul 19
2012364.203364.034Sep 11364.514Jan 2
2011364.405364.034Apr 22364.963Aug 29
2010364.139364.005Mar 16364.326Aug 10
2009364.164364.063Dec 31364.334Jul 22
2008364.181364.060Oct 26364.303May 21
2007364.018363.909Apr 15364.145Dec 31
2006364.116363.997Apr 11364.268Aug 11
2005364.243364.105Apr 10364.406Oct 2
2004364.047363.815Jan 1364.205Sep 18
2003364.049363.790Nov 20364.291Jun 21
2002364.061363.945Jan 11364.193Sep 4
2001364.044363.919Nov 18364.154Jul 26
2000364.087363.847Jan 2364.361Jul 22
1999363.889363.716Nov 4364.315Aug 8
1998364.026363.745Nov 14364.212Jan 15
1997 (306 days)364.252364.098Sep 13364.401Jul 5
1996 (309 days)364.246364.126Oct 30364.431Jun 17
1995364.151364.053Jan 5364.269Aug 23
1994364.015363.760Jan 13364.298Jul 16
1993363.743363.693Apr 7363.853Aug 25
1992363.773363.648Nov 11363.937Jun 29
1991363.806363.690Oct 13364.032Jul 20
1990363.830363.691Nov 9364.091Jul 3
1989363.855363.702Nov 10364.058Jul 10
1988363.916363.810Jan 3364.054Jul 21
1987363.959363.775Nov 19364.126Jul 1
1986364.166363.986Dec 30364.415Aug 2
1985364.130363.952Jan 12364.408Jun 24
1984364.003363.832Oct 29364.227Jun 29
1983364.019363.851Jan 1364.287Jul 29
1982363.897363.779Jan 4364.093Jul 6
1981364.006363.741Nov 7364.230May 28
1980363.886363.791Aug 22364.042Dec 30
1979363.889363.751May 2364.023Jul 24
1978364.101363.882Dec 29364.355Jul 1
1977 (229 days)364.015363.709Jan 10364.138Jul 28
1976363.762363.660Apr 14363.934Aug 7
1975364.018363.764Dec 27364.245Jan 1
1974364.292363.995Apr 16364.617Aug 14
1973 (88 days)364.071363.660Jan 4364.343Jul 22
1972 (64 days)363.709363.565Nov 19363.907Jun 18
1971 (56 days)363.948363.770Dec 12364.135Aug 22
1970 (60 days)364.048363.663Jan 5364.437Aug 23
1969 (57 days)363.665363.565Oct 20363.788Jun 29
1968 (77 days)363.817363.639Dec 22363.949Jul 7
1967 (60 days)363.762363.654Nov 12363.959Aug 13
1966 (56 days)363.793363.681May 15363.980Aug 28
1965 (59 days)363.661363.462Feb 1363.858Aug 1
1964 (95 days)363.505363.425Aug 30363.617May 24
1963 (78 days)363.524363.270Apr 29363.757Aug 15
1962 (52 days)363.464363.300Dec 2363.697Jun 25
1961 (54 days)363.652363.453Nov 5363.895Jun 5
1960 (52 days)363.729363.468Mar 27364.017Jul 10
1959 (46 days)363.665363.520Mar 10363.864Jul 19
1957 (5 days)363.722363.636Jan 31363.840Jul 31
1956 (21 days)363.777363.532May 5364.105Jan 3
1955 (45 days)364.356364.105Nov 5364.751Jun 18
1954 (53 days)363.636363.127Apr 24364.270Oct 23
1953 (52 days)363.437363.227Dec 19363.532Aug 15
1952 (53 days)363.580363.489Apr 26363.700Aug 2
1951 (53 days)363.479363.239Apr 21363.712Sep 15
1950 (50 days)363.329363.239May 13363.425Aug 19
1949 (55 days)363.333363.261Apr 16363.425Aug 13
1948 (51 days)363.388363.325Dec 18363.456Jun 26
1947 (53 days)363.350363.203Apr 25363.456Jul 5
1946 (52 days)363.248363.114Apr 6363.380Sep 7
1945 (50 days)363.117362.950Mar 31363.255Jul 21
1944 (53 days)363.035362.950Mar 11363.151Aug 19
1943 (52 days)362.851362.618Mar 27363.020Jul 24
1942 (52 days)362.595362.395Apr 25362.816Aug 29
1941 (52 days)362.532362.465Dec 20362.691Jun 28
1940 (52 days)362.706362.511Dec 28362.852Jun 1
1939 (52 days)362.782362.627Mar 18362.992Jul 22
1938 (51 days)362.756362.675Dec 31362.849Jan 4
1937 (48 days)363.178362.855Dec 28363.316Jan 6
1936 (44 days)363.594363.325Dec 30363.831Jan 8
1935 (39 days)364.084363.852Dec 31364.346Jan 9
1934 (41 days)364.311363.977Mar 21364.599Aug 22
1933 (34 days)364.184363.901Apr 11364.382Aug 9
1932 (39 days)363.948363.672Apr 13364.193Sep 14
1931 (42 days)363.481363.191Mar 18363.736Dec 30
1930 (22 days)363.339363.255Dec 24363.456Jul 16

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

Monthly averages

MonthAverageLowestHighest
January363.960362.447364.514
February363.956362.441364.416
March363.949362.429364.315
April363.949362.395364.307
May364.017362.416364.574
June364.103362.517364.751
July364.147362.611364.914
August364.133362.517364.967
September364.069362.517364.952
October364.007362.493364.895
November363.970362.480364.758
December363.961362.465364.619

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Daily levels as CSV (20,858 rows; credit the original agencies listed below)