Country: Canada
United StatesCanadaUnited Kingdom

Lake Athabasca water level history

Daily records since 1930 · Level today: 5.319 m

Highest on record
211.333 m
Jul 14, 1935
Lowest on record
2.796 m
Apr 4, 2024
Today
5.319 m
Oct 23, 2026
Years of data
96
since 1930

In short

Across 29 complete years, 2015 had the lowest average level (4.226 m) and 1998 the highest (209.391 m).

On average the lake is lowest in January (153.659 m) and highest in August (177.906 m).

Lake Athabasca level, all years

Loading chart…

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

Each year's lowest and highest level

-10491071652241930194219541966197819902002201420261930: lowest 208.54 m (1930-12-21), highest 209.15 m (1930-11-13), average 208.73 m, 52 days measured1931: lowest 207.54 m (1931-03-06), highest 209.72 m (1931-06-17), average 208.93 m, 44 days measured1934: lowest 208.37 m (1934-12-31), highest 210.05 m (1934-06-11), average 209.34 m, 45 days measured1935: lowest 207.95 m (1935-02-04), highest 211.33 m (1935-07-14), average 209.61 m, 38 days measured1936: lowest 207.79 m (1936-02-17), highest 211.18 m (1936-07-04), average 210.29 m, 48 days measured1937: lowest 208.65 m (1937-08-25), highest 210.11 m (1937-06-17), average 209.36 m, 29 days measured1938: lowest 206.71 m (1938-10-14), highest 209.05 m (1938-07-19), average 208.41 m, 71 days measured1939: lowest 207.99 m (1939-05-07), highest 209.41 m (1939-07-31), average 208.82 m, 74 days measured1940: lowest 208.27 m (1940-10-12), highest 209.87 m (1940-06-11), average 209.00 m, 107 days measured1941: lowest 208.25 m (1941-05-19), highest 209.75 m (1941-07-23), average 208.91 m, 85 days measured1942: lowest 208.33 m (1942-10-10), highest 210.05 m (1942-06-17), average 209.27 m, 151 days measured1943: lowest 208.29 m (1943-05-14), highest 209.82 m (1943-07-08), average 209.16 m, 82 days measured1944: lowest 207.99 m (1944-05-26), highest 209.36 m (1944-06-19), average 208.81 m, 110 days measured1947: lowest 208.52 m (1947-10-05), highest 210.04 m (1947-06-25), average 209.22 m, 174 days measured1948: lowest 207.89 m (1948-05-09), highest 210.59 m (1948-06-14), average 209.52 m, 168 days measured1949: lowest 207.92 m (1949-10-17), highest 209.45 m (1949-09-09), average 208.80 m, 184 days measured1950: lowest 207.92 m (1950-10-17), highest 209.47 m (1950-07-06), average 208.70 m, 181 days measured1951: lowest 207.92 m (1951-10-20), highest 209.87 m (1951-06-25), average 209.29 m, 170 days measured1952: lowest 207.92 m (1952-10-16), highest 209.46 m (1952-07-19), average 208.73 m, 170 days measured1953: lowest 205.63 m (1953-08-22), highest 209.17 m (1953-07-22), average 208.68 m, 150 days measured1954: lowest 208.15 m (1954-05-15), highest 209.11 m (1954-05-31), average 208.72 m, 17 days measured1955: lowest 208.12 m (1955-10-25), highest 210.03 m (1955-07-07), average 209.25 m, 146 days measured1956: lowest 206.95 m (1956-05-12), highest 209.47 m (1956-07-14), average 208.88 m, 123 days measured1957: lowest 205.86 m (1957-02-23), highest 205.86 m (1957-02-23), average 205.86 m, 1 days measured1960: lowest 208.22 m (1960-05-11), highest 210.68 m (1960-07-14), average 209.70 m, 152 days measured1961: lowest 208.42 m (1961-10-18), highest 209.95 m (1961-06-27), average 209.29 m, 131 days measured1962: lowest 208.79 m (1962-05-17), highest 210.68 m (1962-08-02), average 209.84 m, 192 days measured1963: lowest 208.79 m (1963-10-28), highest 210.32 m (1963-07-08), average 209.62 m, 183 days measured1964: lowest 208.16 m (1964-05-03), highest 210.74 m (1964-08-25), average 209.84 m, 194 days measured1965: lowest 208.97 m (1965-05-09), highest 210.82 m (1965-07-22), average 209.89 m, 183 days measured1966: lowest 208.53 m (1966-05-14), highest 210.10 m (1966-07-29), average 209.54 m, 175 days measured1967: lowest 208.74 m (1967-05-18), highest 210.61 m (1967-07-08), average 209.72 m, 175 days measured1968: lowest 207.78 m (1968-10-31), highest 208.82 m (1968-08-18), average 208.28 m, 115 days measured1969: lowest 206.06 m (1969-03-26), highest 209.14 m (1969-06-09), average 208.02 m, 222 days measured1970: lowest 205.80 m (1970-02-27), highest 209.00 m (1970-06-29), average 207.66 m, 326 days measured1971: lowest 205.82 m (1971-02-16), highest 209.47 m (1971-07-23), average 208.15 m, 292 days measured1972: lowest 206.09 m (1972-03-27), highest 210.19 m (1972-07-10), average 208.25 m, 260 days measured1973: lowest 207.92 m (1973-04-04), highest 209.92 m (1973-08-17), average 208.77 m, 302 days measured1974: lowest 207.11 m (1974-04-06), highest 210.26 m (1974-07-31), average 209.13 m, 307 days measured1975: lowest 208.07 m (1975-04-17), highest 209.83 m (1975-06-27), average 208.87 m, 332 days measured1976: lowest 208.32 m (1976-04-09), highest 210.12 m (1976-10-03), average 209.07 m, 326 days measured1977: lowest 208.58 m (1977-04-14), highest 209.92 m (1977-07-28), average 209.27 m, 338 days measured1978: lowest 208.59 m (1978-04-13), highest 209.70 m (1978-09-08), average 209.15 m, 281 days measured1979: lowest 208.34 m (1979-04-24), highest 210.20 m (1979-07-12), average 209.18 m, 348 days measured1980: lowest 207.96 m (1980-10-29), highest 209.01 m (1980-07-23), average 208.55 m, 348 days measured1981: lowest 207.78 m (1981-11-11), highest 209.14 m (1981-06-06), average 208.36 m, 342 days measured1982: lowest 206.36 m (1982-03-24), highest 209.37 m (1982-08-02), average 208.27 m, 322 days measured1983: lowest 207.88 m (1983-04-09), highest 209.27 m (1983-08-11), average 208.51 m, 365 days measured1984: lowest 207.80 m (1984-04-08), highest 209.72 m (1984-10-17), average 208.62 m, 341 days measured1985: lowest 208.08 m (1985-03-13), highest 209.84 m (1985-07-20), average 208.81 m, 363 days measured1986: lowest 207.89 m (1986-04-01), highest 209.73 m (1986-09-10), average 208.83 m, 332 days measured1987: lowest 208.31 m (1987-11-03), highest 209.65 m (1987-08-01), average 208.75 m, 317 days measured1988: lowest 208.20 m (1988-04-05), highest 209.43 m (1988-07-24), average 208.74 m, 245 days measured1989: lowest 208.02 m (1989-04-19), highest 209.83 m (1989-08-03), average 208.89 m, 310 days measured1990: lowest 208.41 m (1990-04-07), highest 209.86 m (1990-06-11), average 209.03 m, 319 days measured1991: lowest 207.52 m (1991-04-02), highest 209.72 m (1991-07-19), average 208.79 m, 241 days measured1992: lowest 208.47 m (1992-10-16), highest 209.56 m (1992-06-02), average 209.03 m, 275 days measured1993: lowest 208.24 m (1993-10-27), highest 209.24 m (1993-06-23), average 208.81 m, 254 days measured1994: lowest 208.11 m (1994-10-28), highest 209.70 m (1994-07-03), average 208.93 m, 324 days measured1995: lowest 207.59 m (1995-03-25), highest 209.15 m (1995-09-08), average 208.44 m, 347 days measured1996: lowest 207.94 m (1996-04-11), highest 210.48 m (1996-08-04), average 209.40 m, 297 days measured1997: lowest 208.76 m (1997-04-18), highest 210.76 m (1997-07-31), average 209.90 m, 321 days measured1998: lowest 208.19 m (1998-10-26), highest 210.43 m (1998-01-20), average 209.39 m, 354 days measured1999: lowest 207.53 m (1999-08-26), highest 209.02 m (1999-07-30), average 208.28 m, 310 days measured2000: lowest 207.39 m (2000-04-20), highest 208.88 m (2000-09-02), average 208.21 m, 272 days measured2001: lowest 208.11 m (2001-12-09), highest 209.19 m (2001-09-19), average 208.51 m, 365 days measured2002: lowest 207.02 m (2002-04-28), highest 209.10 m (2002-09-04), average 208.42 m, 263 days measured2003: lowest 208.07 m (2003-04-10), highest 209.56 m (2003-07-05), average 208.93 m, 249 days measured2004: lowest 208.04 m (2004-03-18), highest 209.27 m (2004-07-27), average 208.72 m, 333 days measured2005: lowest 208.25 m (2005-04-02), highest 209.70 m (2005-07-22), average 209.04 m, 365 days measured2006: lowest 208.07 m (2006-12-06), highest 209.26 m (2006-07-11), average 208.76 m, 351 days measured2007: lowest 207.14 m (2007-03-28), highest 209.56 m (2007-05-25), average 208.55 m, 323 days measured2008: lowest 208.05 m (2008-09-24), highest 209.44 m (2008-06-07), average 208.64 m, 235 days measured2009: lowest 208.12 m (2009-04-15), highest 209.36 m (2009-07-13), average 208.79 m, 262 days measured2010: lowest 207.84 m (2010-11-06), highest 209.32 m (2010-08-27), average 208.34 m, 365 days measured2011: lowest 207.45 m (2011-04-07), highest 209.51 m (2011-08-06), average 208.36 m, 328 days measured2012: lowest 207.93 m (2012-04-07), highest 209.47 m (2012-08-22), average 208.64 m, 365 days measured2013: lowest 208.21 m (2013-04-21), highest 210.22 m (2013-09-17), average 208.97 m, 357 days measured2014: lowest 4.07 m (2014-04-12), highest 5.62 m (2014-07-19), average 4.73 m, 365 days measured2015: lowest 3.69 m (2015-11-12), highest 4.84 m (2015-06-13), average 4.23 m, 347 days measured2016: lowest 3.61 m (2016-04-04), highest 5.03 m (2016-10-01), average 4.37 m, 345 days measured2017: lowest 4.47 m (2017-11-03), highest 5.73 m (2017-06-09), average 4.93 m, 365 days measured2018: lowest 4.28 m (2018-04-18), highest 5.62 m (2018-07-21), average 4.86 m, 365 days measured2019: lowest 3.97 m (2019-04-01), highest 5.28 m (2019-08-16), average 4.70 m, 365 days measured2020: lowest 4.80 m (2020-04-23), highest 7.05 m (2020-08-22), average 5.92 m, 366 days measured2021: lowest 5.00 m (2021-12-31), highest 6.42 m (2021-07-04), average 5.72 m, 365 days measured2022: lowest 4.52 m (2022-12-31), highest 6.14 m (2022-07-04), average 5.20 m, 365 days measured2023: lowest 3.85 m (2023-12-27), highest 5.02 m (2023-07-26), average 4.40 m, 365 days measured2024: lowest 2.80 m (2024-04-04), highest 4.96 m (2024-07-26), average 4.20 m, 305 days measured2025: lowest 3.85 m (2025-04-16), highest 5.07 m (2025-08-13), average 4.30 m, 365 days measured2026: lowest 5.06 m (2026-10-12), highest 5.77 m (2026-09-25), average 5.38 m, 30 days measured
-1049107165224193019541978200220261930: lowest 208.54 m (1930-12-21), highest 209.15 m (1930-11-13), average 208.73 m, 52 days measured1931: lowest 207.54 m (1931-03-06), highest 209.72 m (1931-06-17), average 208.93 m, 44 days measured1934: lowest 208.37 m (1934-12-31), highest 210.05 m (1934-06-11), average 209.34 m, 45 days measured1935: lowest 207.95 m (1935-02-04), highest 211.33 m (1935-07-14), average 209.61 m, 38 days measured1936: lowest 207.79 m (1936-02-17), highest 211.18 m (1936-07-04), average 210.29 m, 48 days measured1937: lowest 208.65 m (1937-08-25), highest 210.11 m (1937-06-17), average 209.36 m, 29 days measured1938: lowest 206.71 m (1938-10-14), highest 209.05 m (1938-07-19), average 208.41 m, 71 days measured1939: lowest 207.99 m (1939-05-07), highest 209.41 m (1939-07-31), average 208.82 m, 74 days measured1940: lowest 208.27 m (1940-10-12), highest 209.87 m (1940-06-11), average 209.00 m, 107 days measured1941: lowest 208.25 m (1941-05-19), highest 209.75 m (1941-07-23), average 208.91 m, 85 days measured1942: lowest 208.33 m (1942-10-10), highest 210.05 m (1942-06-17), average 209.27 m, 151 days measured1943: lowest 208.29 m (1943-05-14), highest 209.82 m (1943-07-08), average 209.16 m, 82 days measured1944: lowest 207.99 m (1944-05-26), highest 209.36 m (1944-06-19), average 208.81 m, 110 days measured1947: lowest 208.52 m (1947-10-05), highest 210.04 m (1947-06-25), average 209.22 m, 174 days measured1948: lowest 207.89 m (1948-05-09), highest 210.59 m (1948-06-14), average 209.52 m, 168 days measured1949: lowest 207.92 m (1949-10-17), highest 209.45 m (1949-09-09), average 208.80 m, 184 days measured1950: lowest 207.92 m (1950-10-17), highest 209.47 m (1950-07-06), average 208.70 m, 181 days measured1951: lowest 207.92 m (1951-10-20), highest 209.87 m (1951-06-25), average 209.29 m, 170 days measured1952: lowest 207.92 m (1952-10-16), highest 209.46 m (1952-07-19), average 208.73 m, 170 days measured1953: lowest 205.63 m (1953-08-22), highest 209.17 m (1953-07-22), average 208.68 m, 150 days measured1954: lowest 208.15 m (1954-05-15), highest 209.11 m (1954-05-31), average 208.72 m, 17 days measured1955: lowest 208.12 m (1955-10-25), highest 210.03 m (1955-07-07), average 209.25 m, 146 days measured1956: lowest 206.95 m (1956-05-12), highest 209.47 m (1956-07-14), average 208.88 m, 123 days measured1957: lowest 205.86 m (1957-02-23), highest 205.86 m (1957-02-23), average 205.86 m, 1 days measured1960: lowest 208.22 m (1960-05-11), highest 210.68 m (1960-07-14), average 209.70 m, 152 days measured1961: lowest 208.42 m (1961-10-18), highest 209.95 m (1961-06-27), average 209.29 m, 131 days measured1962: lowest 208.79 m (1962-05-17), highest 210.68 m (1962-08-02), average 209.84 m, 192 days measured1963: lowest 208.79 m (1963-10-28), highest 210.32 m (1963-07-08), average 209.62 m, 183 days measured1964: lowest 208.16 m (1964-05-03), highest 210.74 m (1964-08-25), average 209.84 m, 194 days measured1965: lowest 208.97 m (1965-05-09), highest 210.82 m (1965-07-22), average 209.89 m, 183 days measured1966: lowest 208.53 m (1966-05-14), highest 210.10 m (1966-07-29), average 209.54 m, 175 days measured1967: lowest 208.74 m (1967-05-18), highest 210.61 m (1967-07-08), average 209.72 m, 175 days measured1968: lowest 207.78 m (1968-10-31), highest 208.82 m (1968-08-18), average 208.28 m, 115 days measured1969: lowest 206.06 m (1969-03-26), highest 209.14 m (1969-06-09), average 208.02 m, 222 days measured1970: lowest 205.80 m (1970-02-27), highest 209.00 m (1970-06-29), average 207.66 m, 326 days measured1971: lowest 205.82 m (1971-02-16), highest 209.47 m (1971-07-23), average 208.15 m, 292 days measured1972: lowest 206.09 m (1972-03-27), highest 210.19 m (1972-07-10), average 208.25 m, 260 days measured1973: lowest 207.92 m (1973-04-04), highest 209.92 m (1973-08-17), average 208.77 m, 302 days measured1974: lowest 207.11 m (1974-04-06), highest 210.26 m (1974-07-31), average 209.13 m, 307 days measured1975: lowest 208.07 m (1975-04-17), highest 209.83 m (1975-06-27), average 208.87 m, 332 days measured1976: lowest 208.32 m (1976-04-09), highest 210.12 m (1976-10-03), average 209.07 m, 326 days measured1977: lowest 208.58 m (1977-04-14), highest 209.92 m (1977-07-28), average 209.27 m, 338 days measured1978: lowest 208.59 m (1978-04-13), highest 209.70 m (1978-09-08), average 209.15 m, 281 days measured1979: lowest 208.34 m (1979-04-24), highest 210.20 m (1979-07-12), average 209.18 m, 348 days measured1980: lowest 207.96 m (1980-10-29), highest 209.01 m (1980-07-23), average 208.55 m, 348 days measured1981: lowest 207.78 m (1981-11-11), highest 209.14 m (1981-06-06), average 208.36 m, 342 days measured1982: lowest 206.36 m (1982-03-24), highest 209.37 m (1982-08-02), average 208.27 m, 322 days measured1983: lowest 207.88 m (1983-04-09), highest 209.27 m (1983-08-11), average 208.51 m, 365 days measured1984: lowest 207.80 m (1984-04-08), highest 209.72 m (1984-10-17), average 208.62 m, 341 days measured1985: lowest 208.08 m (1985-03-13), highest 209.84 m (1985-07-20), average 208.81 m, 363 days measured1986: lowest 207.89 m (1986-04-01), highest 209.73 m (1986-09-10), average 208.83 m, 332 days measured1987: lowest 208.31 m (1987-11-03), highest 209.65 m (1987-08-01), average 208.75 m, 317 days measured1988: lowest 208.20 m (1988-04-05), highest 209.43 m (1988-07-24), average 208.74 m, 245 days measured1989: lowest 208.02 m (1989-04-19), highest 209.83 m (1989-08-03), average 208.89 m, 310 days measured1990: lowest 208.41 m (1990-04-07), highest 209.86 m (1990-06-11), average 209.03 m, 319 days measured1991: lowest 207.52 m (1991-04-02), highest 209.72 m (1991-07-19), average 208.79 m, 241 days measured1992: lowest 208.47 m (1992-10-16), highest 209.56 m (1992-06-02), average 209.03 m, 275 days measured1993: lowest 208.24 m (1993-10-27), highest 209.24 m (1993-06-23), average 208.81 m, 254 days measured1994: lowest 208.11 m (1994-10-28), highest 209.70 m (1994-07-03), average 208.93 m, 324 days measured1995: lowest 207.59 m (1995-03-25), highest 209.15 m (1995-09-08), average 208.44 m, 347 days measured1996: lowest 207.94 m (1996-04-11), highest 210.48 m (1996-08-04), average 209.40 m, 297 days measured1997: lowest 208.76 m (1997-04-18), highest 210.76 m (1997-07-31), average 209.90 m, 321 days measured1998: lowest 208.19 m (1998-10-26), highest 210.43 m (1998-01-20), average 209.39 m, 354 days measured1999: lowest 207.53 m (1999-08-26), highest 209.02 m (1999-07-30), average 208.28 m, 310 days measured2000: lowest 207.39 m (2000-04-20), highest 208.88 m (2000-09-02), average 208.21 m, 272 days measured2001: lowest 208.11 m (2001-12-09), highest 209.19 m (2001-09-19), average 208.51 m, 365 days measured2002: lowest 207.02 m (2002-04-28), highest 209.10 m (2002-09-04), average 208.42 m, 263 days measured2003: lowest 208.07 m (2003-04-10), highest 209.56 m (2003-07-05), average 208.93 m, 249 days measured2004: lowest 208.04 m (2004-03-18), highest 209.27 m (2004-07-27), average 208.72 m, 333 days measured2005: lowest 208.25 m (2005-04-02), highest 209.70 m (2005-07-22), average 209.04 m, 365 days measured2006: lowest 208.07 m (2006-12-06), highest 209.26 m (2006-07-11), average 208.76 m, 351 days measured2007: lowest 207.14 m (2007-03-28), highest 209.56 m (2007-05-25), average 208.55 m, 323 days measured2008: lowest 208.05 m (2008-09-24), highest 209.44 m (2008-06-07), average 208.64 m, 235 days measured2009: lowest 208.12 m (2009-04-15), highest 209.36 m (2009-07-13), average 208.79 m, 262 days measured2010: lowest 207.84 m (2010-11-06), highest 209.32 m (2010-08-27), average 208.34 m, 365 days measured2011: lowest 207.45 m (2011-04-07), highest 209.51 m (2011-08-06), average 208.36 m, 328 days measured2012: lowest 207.93 m (2012-04-07), highest 209.47 m (2012-08-22), average 208.64 m, 365 days measured2013: lowest 208.21 m (2013-04-21), highest 210.22 m (2013-09-17), average 208.97 m, 357 days measured2014: lowest 4.07 m (2014-04-12), highest 5.62 m (2014-07-19), average 4.73 m, 365 days measured2015: lowest 3.69 m (2015-11-12), highest 4.84 m (2015-06-13), average 4.23 m, 347 days measured2016: lowest 3.61 m (2016-04-04), highest 5.03 m (2016-10-01), average 4.37 m, 345 days measured2017: lowest 4.47 m (2017-11-03), highest 5.73 m (2017-06-09), average 4.93 m, 365 days measured2018: lowest 4.28 m (2018-04-18), highest 5.62 m (2018-07-21), average 4.86 m, 365 days measured2019: lowest 3.97 m (2019-04-01), highest 5.28 m (2019-08-16), average 4.70 m, 365 days measured2020: lowest 4.80 m (2020-04-23), highest 7.05 m (2020-08-22), average 5.92 m, 366 days measured2021: lowest 5.00 m (2021-12-31), highest 6.42 m (2021-07-04), average 5.72 m, 365 days measured2022: lowest 4.52 m (2022-12-31), highest 6.14 m (2022-07-04), average 5.20 m, 365 days measured2023: lowest 3.85 m (2023-12-27), highest 5.02 m (2023-07-26), average 4.40 m, 365 days measured2024: lowest 2.80 m (2024-04-04), highest 4.96 m (2024-07-26), average 4.20 m, 305 days measured2025: lowest 3.85 m (2025-04-16), highest 5.07 m (2025-08-13), average 4.30 m, 365 days measured2026: lowest 5.06 m (2026-10-12), highest 5.77 m (2026-09-25), average 5.38 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.

  • 20163.611 m on Apr 4
  • 20153.693 m on Nov 12
  • 20233.852 m on Dec 27
  • 20253.855 m on Apr 16
  • 20193.967 m on Apr 1

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)5.3785.064Oct 125.767Sep 25
20254.2973.855Apr 165.069Aug 13
2024 (305 days)4.2032.796Apr 44.957Jul 26
20234.3993.852Dec 275.024Jul 26
20225.1994.521Dec 316.143Jul 4
20215.7244.996Dec 316.422Jul 4
20205.9184.801Apr 237.054Aug 22
20194.7023.967Apr 15.276Aug 16
20184.8634.279Apr 185.617Jul 21
20174.9304.465Nov 35.733Jun 9
20164.3693.611Apr 45.033Oct 1
20154.2263.693Nov 124.844Jun 13
20144.7334.068Apr 125.616Jul 19
2013208.965208.207Apr 21210.220Sep 17
2012208.642207.927Apr 7209.471Aug 22
2011 (328 days)208.363207.447Apr 7209.506Aug 6
2010208.338207.837Nov 6209.325Aug 27
2009 (262 days)208.793208.123Apr 15209.364Jul 13
2008 (235 days)208.642208.052Sep 24209.442Jun 7
2007 (323 days)208.548207.139Mar 28209.556May 25
2006208.764208.070Dec 6209.259Jul 11
2005209.038208.255Apr 2209.696Jul 22
2004208.723208.040Mar 18209.271Jul 27
2003 (249 days)208.926208.072Apr 10209.558Jul 5
2002 (263 days)208.418207.022Apr 28209.103Sep 4
2001208.508208.108Dec 9209.186Sep 19
2000 (272 days)208.213207.392Apr 20208.875Sep 2
1999 (310 days)208.284207.533Aug 26209.017Jul 30
1998209.391208.189Oct 26210.430Jan 20
1997 (321 days)209.900208.757Apr 18210.756Jul 31
1996 (297 days)209.400207.944Apr 11210.483Aug 4
1995208.443207.585Mar 25209.153Sep 8
1994 (324 days)208.927208.112Oct 28209.696Jul 3
1993 (254 days)208.810208.237Oct 27209.236Jun 23
1992 (275 days)209.028208.474Oct 16209.560Jun 2
1991 (241 days)208.789207.524Apr 2209.720Jul 19
1990 (319 days)209.034208.407Apr 7209.858Jun 11
1989 (310 days)208.893208.025Apr 19209.831Aug 3
1988 (245 days)208.745208.204Apr 5209.428Jul 24
1987 (317 days)208.754208.309Nov 3209.652Aug 1
1986208.831207.894Apr 1209.725Sep 10
1985208.808208.082Mar 13209.836Jul 20
1984208.617207.801Apr 8209.721Oct 17
1983208.514207.880Apr 9209.274Aug 11
1982 (322 days)208.270206.361Mar 24209.372Aug 2
1981208.364207.778Nov 11209.135Jun 6
1980208.545207.956Oct 29209.010Jul 23
1979209.176208.339Apr 24210.199Jul 12
1978 (281 days)209.146208.593Apr 13209.699Sep 8
1977209.274208.575Apr 14209.922Jul 28
1976 (326 days)209.071208.322Apr 9210.117Oct 3
1975208.873208.072Apr 17209.830Jun 27
1974 (307 days)209.131207.109Apr 6210.257Jul 31
1973 (302 days)208.768207.922Apr 4209.919Aug 17
1972 (260 days)208.246206.091Mar 27210.190Jul 10
1971 (292 days)208.146205.822Feb 16209.468Jul 23
1970 (326 days)207.662205.804Feb 27208.995Jun 29
1969 (222 days)208.015206.063Mar 26209.142Jun 9
1968 (115 days)208.283207.782Oct 31208.822Aug 18
1967 (175 days)209.719208.742May 18210.608Jul 8
1966 (175 days)209.539208.529May 14210.099Jul 29
1965 (183 days)209.891208.974May 9210.821Jul 22
1964 (194 days)209.844208.157May 3210.739Aug 25
1963 (183 days)209.624208.785Oct 28210.315Jul 8
1962 (192 days)209.843208.791May 17210.675Aug 2
1961 (131 days)209.294208.419Oct 18209.946Jun 27
1960 (152 days)209.698208.215May 11210.681Jul 14
1957 (1 days)205.859205.859Feb 23205.859Feb 23
1956 (123 days)208.885206.950May 12209.474Jul 14
1955 (146 days)209.250208.120Oct 25210.029Jul 7
1954 (17 days)208.723208.148May 15209.108May 31
1953 (150 days)208.682205.633Aug 22209.169Jul 22
1952 (170 days)208.734207.919Oct 16209.459Jul 19
1951 (170 days)209.294207.919Oct 20209.870Jun 25
1950 (181 days)208.698207.919Oct 17209.474Jul 6
1949 (184 days)208.802207.919Oct 17209.449Sep 9
1948 (168 days)209.520207.889May 9210.592Jun 14
1947 (174 days)209.219208.523Oct 5210.044Jun 25
1944 (110 days)208.808207.986May 26209.358Jun 19
1943 (82 days)209.157208.285May 14209.824Jul 8
1942 (151 days)209.270208.331Oct 10210.053Jun 17
1941 (85 days)208.910208.255May 19209.748Jul 23
1940 (107 days)209.003208.267Oct 12209.870Jun 11
1939 (74 days)208.815207.992May 7209.413Jul 31
1938 (71 days)208.408206.712Oct 14209.047Jul 19
1937 (29 days)209.363208.651Aug 25210.114Jun 17
1936 (48 days)210.287207.791Feb 17211.181Jul 4
1935 (38 days)209.615207.950Feb 4211.333Jul 14
1934 (45 days)209.339208.370Dec 31210.053Jun 11
1931 (44 days)208.925207.538Mar 6209.724Jun 17
1930 (52 days)208.727208.535Dec 21209.145Nov 13

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

Monthly averages

MonthAverageLowestHighest
January153.6593.652210.430
February157.3753.721210.380
March161.2982.893210.186
April165.1052.796209.937
May172.6233.900210.154
June176.6364.110210.998
July177.7284.246211.333
August177.9064.113210.906
September176.5513.832211.028
October171.3593.834210.453
November161.1453.693210.407
December159.6583.852210.272

Download

Daily levels as CSV (22,327 rows; credit the original agencies listed below)