Country: Canada
United StatesCanadaUnited Kingdom

Waterton Lake water level history

Daily records since 1950 · Level today: 1,278.193 m

Highest on record
1,281.990 m
Jun 9, 1964
Lowest on record
1,277.810 m
Dec 24, 1952
Today
1,278.193 m
Oct 23, 2026
Years of data
76
since 1950

In short

Across 19 complete years, 2023 had the lowest average level (1,278.379 m) and 2016 the highest (1,278.592 m).

On average the lake is lowest in February (1,278.185 m) and highest in June (1,279.421 m).

Waterton Lake level, all years

Loading chart…

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

Each year's lowest and highest level

1,2781,2791,2801,2811,2821950196019701980199020002010202020261950: lowest 1,277.96 m (1950-10-05), highest 1,279.79 m (1950-06-24), average 1,278.57 m, 8 days measured1951: lowest 1,278.24 m (1951-08-29), highest 1,279.55 m (1951-06-16), average 1,278.93 m, 15 days measured1952: lowest 1,277.81 m (1952-12-24), highest 1,279.21 m (1952-05-22), average 1,278.46 m, 13 days measured1953: lowest 1,277.93 m (1953-12-21), highest 1,280.04 m (1953-06-05), average 1,278.56 m, 18 days measured1954: lowest 1,278.02 m (1954-04-13), highest 1,279.79 m (1954-05-20), average 1,278.69 m, 16 days measured1955: lowest 1,278.05 m (1955-04-06), highest 1,280.00 m (1955-06-25), average 1,278.80 m, 25 days measured1956: lowest 1,278.11 m (1956-08-26), highest 1,279.76 m (1956-05-21), average 1,278.79 m, 25 days measured1957: lowest 1,278.15 m (1957-08-24), highest 1,279.43 m (1957-05-24), average 1,278.82 m, 10 days measured1958: lowest 1,278.08 m (1958-08-29), highest 1,279.82 m (1958-05-28), average 1,278.53 m, 21 days measured1959: lowest 1,278.18 m (1959-12-31), highest 1,279.91 m (1959-06-06), average 1,278.69 m, 270 days measured1960: lowest 1,278.08 m (1960-10-09), highest 1,279.64 m (1960-06-04), average 1,278.49 m, 279 days measured1961: lowest 1,278.08 m (1961-01-03), highest 1,279.94 m (1961-05-28), average 1,278.48 m, 349 days measured1962: lowest 1,278.15 m (1962-09-11), highest 1,279.46 m (1962-05-28), average 1,278.58 m, 235 days measured1963: lowest 1,277.98 m (1963-01-31), highest 1,279.76 m (1963-06-11), average 1,278.44 m, 322 days measured1964: lowest 1,278.06 m (1964-02-10), highest 1,281.99 m (1964-06-09), average 1,278.58 m, 253 days measured1965: lowest 1,278.18 m (1965-01-18), highest 1,279.92 m (1965-06-18), average 1,278.56 m, 246 days measured1966: lowest 1,278.24 m (1966-01-14), highest 1,279.89 m (1966-05-31), average 1,278.62 m, 219 days measured1967: lowest 1,278.18 m (1967-03-21), highest 1,280.04 m (1967-05-23), average 1,279.04 m, 109 days measured1968: lowest 1,278.21 m (1968-01-16), highest 1,279.79 m (1968-06-05), average 1,278.85 m, 94 days measured1969: lowest 1,278.21 m (1969-11-20), highest 1,279.96 m (1969-06-08), average 1,278.97 m, 93 days measured1970: lowest 1,278.21 m (1970-01-06), highest 1,280.24 m (1970-06-14), average 1,278.77 m, 68 days measured1971: lowest 1,278.25 m (1971-01-07), highest 1,279.94 m (1971-05-29), average 1,278.91 m, 136 days measured1972: lowest 1,278.20 m (1972-12-19), highest 1,280.22 m (1972-06-02), average 1,278.91 m, 181 days measured1973: lowest 1,278.15 m (1973-03-05), highest 1,279.76 m (1973-06-10), average 1,278.57 m, 210 days measured1974: lowest 1,278.09 m (1974-11-10), highest 1,280.23 m (1974-06-18), average 1,278.69 m, 233 days measured1975: lowest 1,278.06 m (1975-04-05), highest 1,281.45 m (1975-06-20), average 1,278.87 m, 203 days measured1976: lowest 1,278.21 m (1976-03-21), highest 1,279.82 m (1976-05-12), average 1,278.83 m, 238 days measured1977: lowest 1,278.38 m (1977-02-26), highest 1,279.34 m (1977-06-09), average 1,278.70 m, 241 days measured1978: lowest 1,278.35 m (1978-03-18), highest 1,279.93 m (1978-06-09), average 1,278.91 m, 218 days measured1979: lowest 1,278.30 m (1979-11-21), highest 1,279.91 m (1979-05-27), average 1,278.81 m, 170 days measured1980: lowest 1,278.33 m (1980-02-21), highest 1,280.16 m (1980-05-27), average 1,278.85 m, 237 days measured1981: lowest 1,278.36 m (1981-10-19), highest 1,280.18 m (1981-05-23), average 1,278.90 m, 189 days measured1982: lowest 1,278.34 m (1982-12-14), highest 1,279.92 m (1982-06-16), average 1,278.83 m, 213 days measured1983: lowest 1,278.29 m (1983-10-27), highest 1,279.78 m (1983-05-30), average 1,278.73 m, 224 days measured1984: lowest 1,278.30 m (1984-12-08), highest 1,279.60 m (1984-06-01), average 1,278.73 m, 216 days measured1985: lowest 1,278.20 m (1985-02-19), highest 1,279.79 m (1985-05-26), average 1,278.87 m, 203 days measured1986: lowest 1,278.34 m (1986-01-15), highest 1,280.08 m (1986-05-31), average 1,278.79 m, 213 days measured1987: lowest 1,278.19 m (1987-11-27), highest 1,279.60 m (1987-05-03), average 1,278.70 m, 258 days measured1988: lowest 1,278.24 m (1988-02-26), highest 1,279.54 m (1988-06-08), average 1,278.65 m, 275 days measured1989: lowest 1,278.30 m (1989-02-13), highest 1,279.84 m (1989-06-12), average 1,278.90 m, 229 days measured1990: lowest 1,278.32 m (1990-09-30), highest 1,279.76 m (1990-06-26), average 1,278.83 m, 259 days measured1991: lowest 1,278.20 m (1991-11-04), highest 1,280.11 m (1991-06-22), average 1,278.88 m, 222 days measured1992: lowest 1,278.16 m (1992-01-28), highest 1,279.31 m (1992-05-09), average 1,278.63 m, 244 days measured1993: lowest 1,278.16 m (1993-02-23), highest 1,279.72 m (1993-05-18), average 1,278.76 m, 228 days measured1994: lowest 1,278.14 m (1994-02-14), highest 1,279.61 m (1994-05-13), average 1,278.62 m, 236 days measured1995: lowest 1,278.23 m (1995-01-03), highest 1,281.54 m (1995-06-07), average 1,278.98 m, 174 days measured1996: lowest 1,278.30 m (1996-11-19), highest 1,280.09 m (1996-06-09), average 1,278.88 m, 207 days measured1997: lowest 1,278.15 m (1997-02-18), highest 1,280.16 m (1997-06-02), average 1,278.85 m, 218 days measured1998: lowest 1,278.11 m (1998-02-26), highest 1,279.78 m (1998-06-17), average 1,278.70 m, 196 days measured1999: lowest 1,278.11 m (1999-02-25), highest 1,279.77 m (1999-06-19), average 1,278.76 m, 216 days measured2000: lowest 1,278.10 m (2000-11-28), highest 1,279.41 m (2000-05-24), average 1,278.61 m, 196 days measured2001: lowest 1,278.03 m (2001-10-13), highest 1,279.72 m (2001-06-05), average 1,278.54 m, 195 days measured2002: lowest 1,278.20 m (2002-01-08), highest 1,280.29 m (2002-06-18), average 1,278.85 m, 198 days measured2003: lowest 1,278.07 m (2003-10-19), highest 1,279.76 m (2003-05-30), average 1,278.59 m, 218 days measured2004: lowest 1,278.12 m (2004-02-24), highest 1,279.47 m (2004-06-07), average 1,278.75 m, 201 days measured2005: lowest 1,278.26 m (2005-09-09), highest 1,279.87 m (2005-06-05), average 1,278.65 m, 280 days measured2006: lowest 1,278.13 m (2006-10-28), highest 1,279.95 m (2006-05-22), average 1,278.57 m, 365 days measured2007: lowest 1,278.05 m (2007-02-22), highest 1,279.74 m (2007-06-07), average 1,278.45 m, 365 days measured2008: lowest 1,278.03 m (2008-03-20), highest 1,280.41 m (2008-05-25), average 1,278.45 m, 366 days measured2009: lowest 1,278.04 m (2009-02-19), highest 1,279.72 m (2009-06-01), average 1,278.41 m, 365 days measured2010: lowest 1,278.06 m (2010-02-27), highest 1,279.86 m (2010-06-23), average 1,278.52 m, 365 days measured2011: lowest 1,278.08 m (2011-12-24), highest 1,279.84 m (2011-06-09), average 1,278.53 m, 344 days measured2012: lowest 1,278.08 m (2012-02-17), highest 1,279.77 m (2012-06-27), average 1,278.55 m, 366 days measured2013: lowest 1,278.07 m (2013-03-02), highest 1,279.95 m (2013-06-21), average 1,278.51 m, 365 days measured2014: lowest 1,278.07 m (2014-01-25), highest 1,280.58 m (2014-06-19), average 1,278.53 m, 347 days measured2015: lowest 1,278.09 m (2015-10-29), highest 1,279.75 m (2015-06-03), average 1,278.50 m, 365 days measured2016: lowest 1,278.14 m (2016-02-08), highest 1,279.60 m (2016-06-09), average 1,278.59 m, 366 days measured2017: lowest 1,278.05 m (2017-10-17), highest 1,279.82 m (2017-06-02), average 1,278.52 m, 365 days measured2018: lowest 1,278.08 m (2018-12-29), highest 1,279.80 m (2018-05-18), average 1,278.45 m, 365 days measured2019: lowest 1,278.05 m (2019-01-26), highest 1,279.75 m (2019-06-04), average 1,278.48 m, 311 days measured2020: lowest 1,278.09 m (2020-10-10), highest 1,280.06 m (2020-06-01), average 1,278.53 m, 366 days measured2021: lowest 1,278.06 m (2021-10-17), highest 1,279.84 m (2021-06-05), average 1,278.50 m, 352 days measured2022: lowest 1,278.01 m (2022-10-30), highest 1,280.03 m (2022-06-12), average 1,278.47 m, 365 days measured2023: lowest 1,278.04 m (2023-03-25), highest 1,279.59 m (2023-05-06), average 1,278.38 m, 365 days measured2024: lowest 1,278.06 m (2024-10-20), highest 1,279.52 m (2024-05-18), average 1,278.43 m, 366 days measured2026: lowest 1,278.19 m (2026-10-17), highest 1,278.41 m (2026-09-22), average 1,278.26 m, 30 days measured
1,2781,2791,2801,2811,282195019691988200720261950: lowest 1,277.96 m (1950-10-05), highest 1,279.79 m (1950-06-24), average 1,278.57 m, 8 days measured1951: lowest 1,278.24 m (1951-08-29), highest 1,279.55 m (1951-06-16), average 1,278.93 m, 15 days measured1952: lowest 1,277.81 m (1952-12-24), highest 1,279.21 m (1952-05-22), average 1,278.46 m, 13 days measured1953: lowest 1,277.93 m (1953-12-21), highest 1,280.04 m (1953-06-05), average 1,278.56 m, 18 days measured1954: lowest 1,278.02 m (1954-04-13), highest 1,279.79 m (1954-05-20), average 1,278.69 m, 16 days measured1955: lowest 1,278.05 m (1955-04-06), highest 1,280.00 m (1955-06-25), average 1,278.80 m, 25 days measured1956: lowest 1,278.11 m (1956-08-26), highest 1,279.76 m (1956-05-21), average 1,278.79 m, 25 days measured1957: lowest 1,278.15 m (1957-08-24), highest 1,279.43 m (1957-05-24), average 1,278.82 m, 10 days measured1958: lowest 1,278.08 m (1958-08-29), highest 1,279.82 m (1958-05-28), average 1,278.53 m, 21 days measured1959: lowest 1,278.18 m (1959-12-31), highest 1,279.91 m (1959-06-06), average 1,278.69 m, 270 days measured1960: lowest 1,278.08 m (1960-10-09), highest 1,279.64 m (1960-06-04), average 1,278.49 m, 279 days measured1961: lowest 1,278.08 m (1961-01-03), highest 1,279.94 m (1961-05-28), average 1,278.48 m, 349 days measured1962: lowest 1,278.15 m (1962-09-11), highest 1,279.46 m (1962-05-28), average 1,278.58 m, 235 days measured1963: lowest 1,277.98 m (1963-01-31), highest 1,279.76 m (1963-06-11), average 1,278.44 m, 322 days measured1964: lowest 1,278.06 m (1964-02-10), highest 1,281.99 m (1964-06-09), average 1,278.58 m, 253 days measured1965: lowest 1,278.18 m (1965-01-18), highest 1,279.92 m (1965-06-18), average 1,278.56 m, 246 days measured1966: lowest 1,278.24 m (1966-01-14), highest 1,279.89 m (1966-05-31), average 1,278.62 m, 219 days measured1967: lowest 1,278.18 m (1967-03-21), highest 1,280.04 m (1967-05-23), average 1,279.04 m, 109 days measured1968: lowest 1,278.21 m (1968-01-16), highest 1,279.79 m (1968-06-05), average 1,278.85 m, 94 days measured1969: lowest 1,278.21 m (1969-11-20), highest 1,279.96 m (1969-06-08), average 1,278.97 m, 93 days measured1970: lowest 1,278.21 m (1970-01-06), highest 1,280.24 m (1970-06-14), average 1,278.77 m, 68 days measured1971: lowest 1,278.25 m (1971-01-07), highest 1,279.94 m (1971-05-29), average 1,278.91 m, 136 days measured1972: lowest 1,278.20 m (1972-12-19), highest 1,280.22 m (1972-06-02), average 1,278.91 m, 181 days measured1973: lowest 1,278.15 m (1973-03-05), highest 1,279.76 m (1973-06-10), average 1,278.57 m, 210 days measured1974: lowest 1,278.09 m (1974-11-10), highest 1,280.23 m (1974-06-18), average 1,278.69 m, 233 days measured1975: lowest 1,278.06 m (1975-04-05), highest 1,281.45 m (1975-06-20), average 1,278.87 m, 203 days measured1976: lowest 1,278.21 m (1976-03-21), highest 1,279.82 m (1976-05-12), average 1,278.83 m, 238 days measured1977: lowest 1,278.38 m (1977-02-26), highest 1,279.34 m (1977-06-09), average 1,278.70 m, 241 days measured1978: lowest 1,278.35 m (1978-03-18), highest 1,279.93 m (1978-06-09), average 1,278.91 m, 218 days measured1979: lowest 1,278.30 m (1979-11-21), highest 1,279.91 m (1979-05-27), average 1,278.81 m, 170 days measured1980: lowest 1,278.33 m (1980-02-21), highest 1,280.16 m (1980-05-27), average 1,278.85 m, 237 days measured1981: lowest 1,278.36 m (1981-10-19), highest 1,280.18 m (1981-05-23), average 1,278.90 m, 189 days measured1982: lowest 1,278.34 m (1982-12-14), highest 1,279.92 m (1982-06-16), average 1,278.83 m, 213 days measured1983: lowest 1,278.29 m (1983-10-27), highest 1,279.78 m (1983-05-30), average 1,278.73 m, 224 days measured1984: lowest 1,278.30 m (1984-12-08), highest 1,279.60 m (1984-06-01), average 1,278.73 m, 216 days measured1985: lowest 1,278.20 m (1985-02-19), highest 1,279.79 m (1985-05-26), average 1,278.87 m, 203 days measured1986: lowest 1,278.34 m (1986-01-15), highest 1,280.08 m (1986-05-31), average 1,278.79 m, 213 days measured1987: lowest 1,278.19 m (1987-11-27), highest 1,279.60 m (1987-05-03), average 1,278.70 m, 258 days measured1988: lowest 1,278.24 m (1988-02-26), highest 1,279.54 m (1988-06-08), average 1,278.65 m, 275 days measured1989: lowest 1,278.30 m (1989-02-13), highest 1,279.84 m (1989-06-12), average 1,278.90 m, 229 days measured1990: lowest 1,278.32 m (1990-09-30), highest 1,279.76 m (1990-06-26), average 1,278.83 m, 259 days measured1991: lowest 1,278.20 m (1991-11-04), highest 1,280.11 m (1991-06-22), average 1,278.88 m, 222 days measured1992: lowest 1,278.16 m (1992-01-28), highest 1,279.31 m (1992-05-09), average 1,278.63 m, 244 days measured1993: lowest 1,278.16 m (1993-02-23), highest 1,279.72 m (1993-05-18), average 1,278.76 m, 228 days measured1994: lowest 1,278.14 m (1994-02-14), highest 1,279.61 m (1994-05-13), average 1,278.62 m, 236 days measured1995: lowest 1,278.23 m (1995-01-03), highest 1,281.54 m (1995-06-07), average 1,278.98 m, 174 days measured1996: lowest 1,278.30 m (1996-11-19), highest 1,280.09 m (1996-06-09), average 1,278.88 m, 207 days measured1997: lowest 1,278.15 m (1997-02-18), highest 1,280.16 m (1997-06-02), average 1,278.85 m, 218 days measured1998: lowest 1,278.11 m (1998-02-26), highest 1,279.78 m (1998-06-17), average 1,278.70 m, 196 days measured1999: lowest 1,278.11 m (1999-02-25), highest 1,279.77 m (1999-06-19), average 1,278.76 m, 216 days measured2000: lowest 1,278.10 m (2000-11-28), highest 1,279.41 m (2000-05-24), average 1,278.61 m, 196 days measured2001: lowest 1,278.03 m (2001-10-13), highest 1,279.72 m (2001-06-05), average 1,278.54 m, 195 days measured2002: lowest 1,278.20 m (2002-01-08), highest 1,280.29 m (2002-06-18), average 1,278.85 m, 198 days measured2003: lowest 1,278.07 m (2003-10-19), highest 1,279.76 m (2003-05-30), average 1,278.59 m, 218 days measured2004: lowest 1,278.12 m (2004-02-24), highest 1,279.47 m (2004-06-07), average 1,278.75 m, 201 days measured2005: lowest 1,278.26 m (2005-09-09), highest 1,279.87 m (2005-06-05), average 1,278.65 m, 280 days measured2006: lowest 1,278.13 m (2006-10-28), highest 1,279.95 m (2006-05-22), average 1,278.57 m, 365 days measured2007: lowest 1,278.05 m (2007-02-22), highest 1,279.74 m (2007-06-07), average 1,278.45 m, 365 days measured2008: lowest 1,278.03 m (2008-03-20), highest 1,280.41 m (2008-05-25), average 1,278.45 m, 366 days measured2009: lowest 1,278.04 m (2009-02-19), highest 1,279.72 m (2009-06-01), average 1,278.41 m, 365 days measured2010: lowest 1,278.06 m (2010-02-27), highest 1,279.86 m (2010-06-23), average 1,278.52 m, 365 days measured2011: lowest 1,278.08 m (2011-12-24), highest 1,279.84 m (2011-06-09), average 1,278.53 m, 344 days measured2012: lowest 1,278.08 m (2012-02-17), highest 1,279.77 m (2012-06-27), average 1,278.55 m, 366 days measured2013: lowest 1,278.07 m (2013-03-02), highest 1,279.95 m (2013-06-21), average 1,278.51 m, 365 days measured2014: lowest 1,278.07 m (2014-01-25), highest 1,280.58 m (2014-06-19), average 1,278.53 m, 347 days measured2015: lowest 1,278.09 m (2015-10-29), highest 1,279.75 m (2015-06-03), average 1,278.50 m, 365 days measured2016: lowest 1,278.14 m (2016-02-08), highest 1,279.60 m (2016-06-09), average 1,278.59 m, 366 days measured2017: lowest 1,278.05 m (2017-10-17), highest 1,279.82 m (2017-06-02), average 1,278.52 m, 365 days measured2018: lowest 1,278.08 m (2018-12-29), highest 1,279.80 m (2018-05-18), average 1,278.45 m, 365 days measured2019: lowest 1,278.05 m (2019-01-26), highest 1,279.75 m (2019-06-04), average 1,278.48 m, 311 days measured2020: lowest 1,278.09 m (2020-10-10), highest 1,280.06 m (2020-06-01), average 1,278.53 m, 366 days measured2021: lowest 1,278.06 m (2021-10-17), highest 1,279.84 m (2021-06-05), average 1,278.50 m, 352 days measured2022: lowest 1,278.01 m (2022-10-30), highest 1,280.03 m (2022-06-12), average 1,278.47 m, 365 days measured2023: lowest 1,278.04 m (2023-03-25), highest 1,279.59 m (2023-05-06), average 1,278.38 m, 365 days measured2024: lowest 1,278.06 m (2024-10-20), highest 1,279.52 m (2024-05-18), average 1,278.43 m, 366 days measured2026: lowest 1,278.19 m (2026-10-17), highest 1,278.41 m (2026-09-22), average 1,278.26 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.

  • 20221,278.010 m on Oct 30
  • 20081,278.030 m on Mar 20
  • 20231,278.040 m on Mar 25
  • 20091,278.040 m on Feb 19
  • 20171,278.050 m on Oct 17

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (30 days)1,278.2631,278.186Oct 171,278.406Sep 22
20241,278.4271,278.060Oct 201,279.520May 18
20231,278.3791,278.040Mar 251,279.590May 6
20221,278.4711,278.010Oct 301,280.030Jun 12
20211,278.5051,278.060Oct 171,279.840Jun 5
20201,278.5261,278.090Oct 101,280.060Jun 1
2019 (311 days)1,278.4791,278.050Jan 261,279.750Jun 4
20181,278.4491,278.080Dec 291,279.800May 18
20171,278.5171,278.050Oct 171,279.820Jun 2
20161,278.5921,278.140Feb 81,279.600Jun 9
20151,278.4961,278.090Oct 291,279.750Jun 3
20141,278.5341,278.070Jan 251,280.580Jun 19
20131,278.5071,278.070Mar 21,279.950Jun 21
20121,278.5481,278.080Feb 171,279.770Jun 27
20111,278.5311,278.080Dec 241,279.840Jun 9
20101,278.5191,278.060Feb 271,279.860Jun 23
20091,278.4051,278.040Feb 191,279.720Jun 1
20081,278.4521,278.030Mar 201,280.410May 25
20071,278.4491,278.050Feb 221,279.740Jun 7
20061,278.5661,278.130Oct 281,279.950May 22
2005 (280 days)1,278.6521,278.260Sep 91,279.870Jun 5
2004 (201 days)1,278.7521,278.120Feb 241,279.470Jun 7
2003 (218 days)1,278.5901,278.070Oct 191,279.760May 30
2002 (198 days)1,278.8481,278.200Jan 81,280.290Jun 18
2001 (195 days)1,278.5361,278.030Oct 131,279.720Jun 5
2000 (196 days)1,278.6111,278.100Nov 281,279.410May 24
1999 (216 days)1,278.7561,278.110Feb 251,279.770Jun 19
1998 (196 days)1,278.6961,278.110Feb 261,279.780Jun 17
1997 (218 days)1,278.8531,278.150Feb 181,280.160Jun 2
1996 (207 days)1,278.8751,278.300Nov 191,280.090Jun 9
1995 (174 days)1,278.9791,278.230Jan 31,281.540Jun 7
1994 (236 days)1,278.6181,278.140Feb 141,279.610May 13
1993 (228 days)1,278.7641,278.160Feb 231,279.720May 18
1992 (244 days)1,278.6301,278.160Jan 281,279.310May 9
1991 (222 days)1,278.8821,278.200Nov 41,280.110Jun 22
1990 (259 days)1,278.8301,278.320Sep 301,279.760Jun 26
1989 (229 days)1,278.9011,278.300Feb 131,279.840Jun 12
1988 (275 days)1,278.6501,278.240Feb 261,279.540Jun 8
1987 (258 days)1,278.6971,278.190Nov 271,279.600May 3
1986 (213 days)1,278.7861,278.340Jan 151,280.080May 31
1985 (203 days)1,278.8691,278.200Feb 191,279.790May 26
1984 (216 days)1,278.7281,278.300Dec 81,279.600Jun 1
1983 (224 days)1,278.7311,278.290Oct 271,279.780May 30
1982 (213 days)1,278.8251,278.340Dec 141,279.920Jun 16
1981 (189 days)1,278.9021,278.360Oct 191,280.180May 23
1980 (237 days)1,278.8461,278.330Feb 211,280.160May 27
1979 (170 days)1,278.8101,278.300Nov 211,279.910May 27
1978 (218 days)1,278.9061,278.350Mar 181,279.930Jun 9
1977 (241 days)1,278.7041,278.380Feb 261,279.340Jun 9
1976 (238 days)1,278.8311,278.210Mar 211,279.820May 12
1975 (203 days)1,278.8711,278.060Apr 51,281.450Jun 20
1974 (233 days)1,278.6891,278.090Nov 101,280.230Jun 18
1973 (210 days)1,278.5671,278.150Mar 51,279.760Jun 10
1972 (181 days)1,278.9151,278.200Dec 191,280.220Jun 2
1971 (136 days)1,278.9141,278.250Jan 71,279.940May 29
1970 (68 days)1,278.7691,278.210Jan 61,280.240Jun 14
1969 (93 days)1,278.9671,278.210Nov 201,279.960Jun 8
1968 (94 days)1,278.8481,278.210Jan 161,279.790Jun 5
1967 (109 days)1,279.0371,278.180Mar 211,280.040May 23
1966 (219 days)1,278.6251,278.240Jan 141,279.890May 31
1965 (246 days)1,278.5601,278.180Jan 181,279.920Jun 18
1964 (253 days)1,278.5811,278.060Feb 101,281.990Jun 9
1963 (322 days)1,278.4431,277.980Jan 311,279.760Jun 11
1962 (235 days)1,278.5751,278.150Sep 111,279.460May 28
19611,278.4811,278.080Jan 31,279.940May 28
1960 (279 days)1,278.4941,278.080Oct 91,279.640Jun 4
1959 (270 days)1,278.6941,278.180Dec 311,279.910Jun 6
1958 (21 days)1,278.5321,278.080Aug 291,279.820May 28
1957 (10 days)1,278.8201,278.150Aug 241,279.430May 24
1956 (25 days)1,278.7921,278.110Aug 261,279.760May 21
1955 (25 days)1,278.8041,278.050Apr 61,280.000Jun 25
1954 (16 days)1,278.6851,278.020Apr 131,279.790May 20
1953 (18 days)1,278.5591,277.930Dec 211,280.040Jun 5
1952 (13 days)1,278.4571,277.810Dec 241,279.210May 22
1951 (15 days)1,278.9311,278.240Aug 291,279.550Jun 16
1950 (8 days)1,278.5691,277.960Oct 51,279.790Jun 24

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

Monthly averages

MonthAverageLowestHighest
January1,278.2121,277.9801,278.840
February1,278.1851,278.0101,278.640
March1,278.2231,278.0301,278.880
April1,278.5051,278.0201,279.550
May1,279.1471,278.1101,280.410
June1,279.4211,278.5601,281.990
July1,278.9031,278.2401,280.020
August1,278.4861,278.0801,279.030
September1,278.3611,277.9901,279.120
October1,278.3481,277.8701,279.120
November1,278.3951,278.0201,279.910
December1,278.2901,277.8101,279.120

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Daily levels as CSV (17,127 rows; credit the original agencies listed below)