Posted by: Rideau Valley Conservation Authority
Rideau Valley Conservation Authority – Station No. 02LA004 (Carleton University)
| Extremes of Discharges (m3/s) for the period of record | |||||||||||||||
| Maximum | Maximum | Minimum | Minimum | ||||||||||||
| Year | Instantaneous Discharge | Time | Day | Daily Discharge | Day | Daily Discharge | Day | Year | August | ||||||
| 1937 | — | 144 | May | 12 | 2.52 | Sept | 3 | 1937 | |||||||
| 1943 | — | 221 | May | 14 | 3.60 | June | 10 | 1943 | |||||||
| 1945 | — | 320 | May | 19 | 1945 | ||||||||||
| 1947 | — | 538 | Apr | 12 | 8.55 | Oct | 26 | 1947 | 9.91 | ||||||
| 1948 | — | 6.46 | Nov | 3 | 1948 | 6.46 | |||||||||
| 1949 | — | 379 | Mar | 30 | 4.59 | Oct | 26 | 1949 | 5.92 | ||||||
| 1950 | — | 447 | Apr | 6 | 5.89 | July | 22 | 1950 | 6.34 | ||||||
| 1951 | — | 419 | Apr | 2 | 4.98 | May | 16 | 1951 | 8.55 | ||||||
| 1952 | — | 379 | Apr | 6 | 7.08 | July | 7 | 1952 | 11.30 | ||||||
| 1953 | — | 331 | Mar | 28 | 7.08 | Nov | 3 | 1953 | |||||||
| 1954 | — | 405 | Apr | 8 | 9.40 | July | 31 | 1954 | 9.40 | ||||||
| 1955 | — | 493 | Apr | 6 | 4.53 | May | 25 | 1955 | 5.66 | ||||||
| 1956 | — | 351 | Apr | 5 | 3.91 | Sept | 17 | 1956 | 6.57 | ||||||
| 1957 | — | 133 | Mar | 15 | 2.97 | Dec | 19 | 1957 | 4.16 | ||||||
| 1958 | — | 306 | Mar | 31 | 3.31 | B | Jan | 13 | 1958 | 5.89 | |||||
| 1959 | — | 413 | Apr | 6 | 4.84 | Oct | 16 | 1959 | 6.80 | ||||||
| 1960 | — | 532 | Apr | 14 | 3.14 | Dec | 1 | 1960 | 6.80 | ||||||
| 1961 | — | 193 | Mar | 30 | 3.06 | B | Feb | 10 | 1961 | 6.12 | |||||
| 1962 | — | 323 | B | Apr | 1 | 4.39 | B | Mar | 5 | 1962 | 6.94 | ||||
| 1963 | — | 442 | Mar | 31 | 4.50 | July | 4 | 1963 | 5.55 | ||||||
| 1964 | — | 109 | Apr | 23 | 3.65 | Dec | 22 | 1964 | 5.10 | ||||||
| 1965 | — | 146 | Dec | 31 | 3.48 | B | Feb | 1 | 1965 | 5.78 | |||||
| 1966 | — | 215 | B | Mar | 6 | 5.21 | July | 7 | 1966 | 5.64 | |||||
| 1967 | — | 311 | Apr | 3 | 7.70 | Sept | 19 | 1967 | 8.55 | ||||||
| 1968 | — | 377 | Mar | 30 | 7.33 | Aug | 15 | 1968 | 7.33 | ||||||
| 1969 | — | 328 | Apr | 8 | 4.39 | Sept | 29 | 1969 | 8.95 | ||||||
| 1970 | — | 442 | Apr | 14 | 5.95 | July | 13 | 1970 | 5.95 | ||||||
| 1971 | 513 | 00:30 | EST | Apr | 19 | 496 | Apr | 19 | 4.87 | Nov | 8 | 1971 | 6.60 | ||
| 1972 | 578 | 18:30 | EST | Apr | 20 | 535 | Apr | 21 | 6.57 | Sept | 25 | 1972 | 10.50 | ||
| 1973 | 464 | 02:00 | EST | Mar | 18 | 447 | Mar | 18 | 5.97 | July | 31 | 1973 | 6.20 | ||
| 1974 | — | 396 | Apr | 6 | 6.26 | Aug | 28 | 1974 | 6.26 | ||||||
| 1975 | 413 | 18:20 | EST | Apr | 19 | 394 | Apr | 20 | 4.59 | Aug | 20 | 1975 | 4.59 | ||
| 1976 | 597 (*) | 04:29 | EST | Mar | 28 | 583 | Mar | 28 | 7.33 | Aug | 31 | 1976 | 7.33 | ||
| 1977 | 473 | 04:24 | EST | Mar | 16 | 467 | Mar | 15 | 2.72 | July | 25 | 1977 | 3.91 | ||
| 1978 | 527 | 22:09 | EST | Apr | 14 | 487 | Apr | 14 | 2.97 | July | 14 | 1978 | 3.77 | ||
| 1979 | 423 | 20:28 | EST | Mar | 25 | 403 | Mar | 25 | 2.78 | July | 25 | 1979 | 5.00 | ||
| 1980 | 421 | 18:00 | EST | Mar | 22 | 385 | B | Mar | 22 | 3.05 | June | 13 | 1980 | 4.95 | |
| 1981 | 446 | 15:45 | EST | Feb | 24 | 435 | Feb | 24 | 1.78 | Apr | 28 | 1981 | 9.04 | ||
| 1982 | 435 | 20:25 | EST | Apr | 1 | 397 | Apr | 1 | 4.56 | Aug | 20 | 1982 | 4.56 | ||
| 1983 | 246 | 13:18 | EST | May | 4 | 224 | Mar | 20 | 3.41 | July | 26 | 1983 | 4.92 | ||
| 1984 | 398 | 21:56 | EST | Apr | 6 | 385 | Apr | 6 | 4.46 | July | 25 | 1984 | 5.39 | ||
| 1985 | 276 | 22:46 | EST | Mar | 14 | 265 | Mar | 15 | 1.48 (*) | July | 25 | *1985 | 3.61 | ||
| 1986 | 256 | 06:28 | EST | May | 23 | 223 | May | 24 | 1.92 | Apr | 29 | 1986 | 25.90 | ||
| 1987 | 353 | 14:45 | EST | Mar | 26 | 334 | A | Mar | 26 | 3.39 | Aug | 28 | 1987 | 3.39 | |
| 1988 | 273 | 18:57 | EST | Mar | 27 | 247 | Mar | 27 | 3.19 | Aug | 16 | 1988 | 3.19 | ||
| 1989 | 276 | 01:00 | EST | Mar | 29 | 251 | Mar | 29 | 3.74 | B | Feb | 28 | 1989 | 6.46 | |
| 1990 | 264 | 03:58 | EST | Mar | 18 | 259 | Mar | 18 | 4.85 | Aug | 25 | 1990 | 6.14 | ||
| 1991 | 326 | 16:16 | EST | Apr | 10 | 311 | Apr | 23 | 3.60 | June | 21 | 1991 | 4.01 | ||
| 1992 | 282 | 00:07 | EST | Apr | 9 | 270 | Apr | 8 | 5.46 | June | 19 | 1992 | 6.17 | ||
| 1993 | 514 | 18:19 | EST | Apr | 11 | 508 | Apr | 11 | 6.31 | Sept | 25 | 1993 | 7.35 | ||
| 1994 | 338 | 19:12 | EST | Apr | 16 | 331 | Apr | 14 | 5.82 | Sept | 7 | 1994 | 6.26 | ||
| 1995 | 270 | 08:26 | EST | Jan | 21 | 264 | Jan | 21 | 2.50 | July | 14 | 1995 | 2.75 (*) | ||
| 1996 | 291 | 12:08 | EST | Jan | 20 | 278 | Jan | 21 | 5.20 | Sept | 6 | 1996 | 6.40 | ||
| 1997 | 449 | 12:18 | EST | Apr | 7 | 442 | Apr | 7 | 3.94 | Aug | 11 | 1997 | 3.94 | ||
| 1998 | 458 | 1:00 | EST | Apr | 2 | 451 | Mar | 31 | 6.73 | May | 29 | 1998 | |||
| 1999 | 448 | 11:00 | EST | Apr | 8 | 436 | Apr | 8 | 3.9 | Sept | 4 | 1999 | |||
| 2000 | 245 | 7:00 | EST | Apr | 11 | 244 | Apr | 11 | 5.85 | Oct | 24 | 2000 | |||
| 2001 | 366 | 0:01 | EST | Apr | 10 | 356 | Apr | 10 | 2.47 | Aug | 10 | 2001 | |||
| 2002 | 188 | Apr | 1 | 172 | |||||||||||
| 2003 | 249 | Mar | 29 | 238 | |||||||||||
| 2004 | 174 | Mar | 6 | 168 | |||||||||||
| 2005 | 437 | 10:55 | EST | Apr | 4 | 427 | Apr | 4 | |||||||
| 2006 | 171 | Mar | 14 | ||||||||||||
| 2007 | 167 | Mar | 28 | ||||||||||||
| Legend | |||||||||||||||
| * – all time maximum / minimum flow | B | ice in the channel affected instrument reading, value has been biased to compensate | |||||||||||||
| A | required manual reading | ||||||||||||||