Data is updated every year about October/November time period
| Date | Annual Peak Release (cfs) |
| May 1968 1 | 240 |
| Mar 1969 1 | 225 |
| Feb 1970 1 | 258 |
| Aug 1971 1 | 205 |
| Mar 1972 1 | 235 |
| Feb 1973 1 | 240 |
| Dec 1973 1 | 281 |
| Mar 1975 1 | 193 |
| Jan 1976 1 | 262 |
| Mar 1977 1 | 230 |
| Jan 1978 1 | 260 |
| Apr 1979 1 | 239 |
| Mar 1980 1 | 305 |
| Feb 1981 1 | 246 |
| Jun 1982 1 | 337 |
| Mar 1983 1 | 284 |
| May 1984 1 | 300 |
| Sep 1985 1 | 97 |
| Dec 1986 1 | 251 |
| Apr 1987 1 | 305 |
| Jul 1988 1 | 97 |
| May 1989 1 | 233 |
| Oct 1989 1 | 292 |
| Oct 1990 1 | 225 |
| Jun 1992 1 | 281 |
| Mar 1993 1 | 233 |
| Aug 1994 1 | 240 |
| Mar 1995 1 | 208 |
| Jan 1996 1 | 263 |
| Oct 1996 1 | 237 |
| 11 May 1998 | 142 |
| 17 Sep 1999 | 225 |
| 07 Jun 2000 | 162 |
| 23 Mar 2001 | 216 |
| 14 May 2002 | 114 |
| 01 Jun 2003 | 201 |
| 14 Apr 2004 | 179 |
| 29 Mar 2005 | 175 |
| 13 May 2006 | 235 |
| 16 Apr 2007 | 247 |
| 09 Mar 2008 | 217 |
| 12 Dec 2008 | 212 |
| 31 Mar 2010 | 216 |
| 29 Aug 2011 | 256 |
| 08 Dec 2011 | 187 |
| 14 Jun 2013 | 215 |
| 01 May 2014 | 167 |
| 10 Dec 2014 | 215 |
| 25 Feb 2016 | 157 |
| 07 Apr 2017 | 101 |
| 30 Oct 2017 | 208 |
| 01 Jan 2019 | 215 |
| 14 Apr 2020 | 222 |
| 02 Sep 2021 | 294 |
| Notes: |
| 1. Estimated Date of Peak Release |