Click on column header to sort on the field| # | Water Year | Observed Date | Index | Stage | Discharge | Designation |
| 1 | 1951 | 1951-05-14 | -0.60 | 5.45 | 4750 | La Nina |
| 2 | 1952 | 1952-04-30 | 1.04 | 5.37 | 4590 | El Nino |
| 3 | 1953 | 1953-06-05 | 0.04 | 5.87 | 5610 | Neutral |
| 4 | 1954 | 1954-05-22 | 0.84 | 5.88 | 5630 | El Nino |
| 5 | 1955 | 1955-06-16 | -0.73 | 5.60 | 5060 | La Nina |
| 6 | 1956 | 1956-06-04 | -1.67 | 6.42 | 6790 | La Nina |
| 7 | 1957 | 1957-05-08 | -0.43 | 5.55 | 4960 | Neutral |
| 8 | 1958 | 1958-05-27 | 1.53 | 6.05 | 5920 | El Nino |
| 9 | 1959 | 1959-06-22 | 0.50 | 6.72 | 7520 | Neutral |
| 10 | 1960 | 1960-06-06 | 0.05 | 5.75 | 5500 | Neutral |
| 11 | 1961 | 1961-05-29 | 0.12 | 6.38 | 6810 | Neutral |
| 12 | 1962 | 1962-05-31 | -0.19 | 5.26 | 4530 | Neutral |
| 13 | 1963 | 1963-06-02 | -0.31 | 4.84 | 3740 | Neutral |
| 14 | 1964 | 1964-06-10 | 1.37 | 6.98 | 8100 | El Nino |
| 15 | 1965 | 1965-06-20 | -0.82 | 6.00 | 6010 | La Nina |
| 16 | 1966 | 1966-06-02 | 1.97 | 5.25 | 4520 | El Nino |
| 17 | 1967 | 1967-05-25 | -0.18 | 5.77 | 5540 | Neutral |
| 18 | 1968 | 1968-06-25 | -0.34 | 5.23 | 4480 | Neutral |
| 19 | 1969 | 1969-06-01 | 0.73 | 5.18 | 4380 | El Nino |
| 20 | 1970 | 1970-06-08 | 0.81 | 6.58 | 7230 | El Nino |
| 21 | 1971 | 1971-05-31 | -0.86 | 5.72 | 5440 | La Nina |
| 22 | 1972 | 1972-06-12 | -0.96 | 6.25 | 6540 | La Nina |
| 23 | 1973 | 1973-05-21 | 2.09 | 4.86 | 3770 | El Nino |
| 24 | 1974 | 1974-06-20 | -1.95 | 7.34 | 8890 | La Nina |
| 25 | 1975 | 1975-06-17 | -0.75 | 5.74 | 5410 | La Nina |
| 26 | 1976 | 1976-05-16 | -1.55 | 5.45 | 4860 | La Nina |
| 27 | 1977 | 1977-05-04 | 0.86 | 4.69 | 3430 | El Nino |
| 28 | 1978 | 1978-06-10 | 0.81 | 5.69 | 5320 | El Nino |
| 29 | 1979 | 1979-05-28 | -0.08 | 5.95 | 5840 | Neutral |
| 30 | 1980 | 1980-05-27 | 0.52 | 5.88 | 5810 | El Nino |
| 31 | 1981 | 1981-05-27 | 0.11 | 5.75 | 5520 | Neutral |
| 32 | 1982 | 1982-06-19 | -0.15 | 5.83 | 5710 | Neutral |
| 33 | 1983 | 1983-06-01 | 2.18 | 5.45 | 4790 | El Nino |
| 34 | 1984 | 1984-06-26 | -1.00 | 5.43 | 4820 | La Nina |
| 35 | 1985 | 1985-06-10 | -0.92 | 5.59 | 5160 | La Nina |
| 36 | 1986 | 1986-06-01 | -0.27 | 6.15 | 6340 | Neutral |
| 37 | 1987 | 1987-05-03 | 1.14 | 5.14 | 4220 | El Nino |
| 38 | 1988 | 1988-06-09 | 1.25 | 4.57 | 3170 | El Nino |
| 39 | 1989 | 1989-05-12 | -1.80 | 5.49 | 4940 | La Nina |
| 40 | 1990 | 1990-06-28 | -0.16 | 5.36 | 4670 | Neutral |
| 41 | 1991 | 1991-05-21 | 0.40 | 5.31 | 4570 | Neutral |
| 42 | 1992 | 1992-05-10 | 1.21 | 4.55 | 3140 | El Nino |
| 43 | 1993 | 1993-05-18 | -0.28 | 5.47 | 5050 | Neutral |
| 44 | 1994 | 1994-05-14 | 0.04 | 4.90 | 3760 | Neutral |
| 45 | 1995 | 1995-06-07 | 1.01 | 4.98 | 3910 | El Nino |
| 46 | 1996 | 1996-06-11 | -1.00 | 5.88 | 5810 | La Nina |
| 47 | 1997 | 1997-05-18 | -0.45 | 7.27 | 8520 | Neutral |
| 48 | 1998 | 1998-05-29 | 2.40 | 4.99 | 3860 | El Nino |
| 49 | 1999 | 1999-05-29 | -1.48 | 5.06 | 3820 | La Nina |
| 50 | 2000 | 2000-06-17 | -1.46 | 4.82 | 3580 | La Nina |
| 51 | 2001 | 2001-05-30 | -0.75 | 5.08 | 3910 | La Nina |
| 52 | 2002 | 2002-06-03 | -0.35 | 5.27 | 4480 | Neutral |
| 53 | 2003 | 2003-06-02 | 1.31 | 5.65 | 5290 | El Nino |
| 54 | 2004 | 2004-06-08 | 0.35 | 4.58 | 3150 | Neutral |
| 55 | 2005 | 2005-06-05 | 0.66 | 5.45 | 4860 | El Nino |
| 56 | 2006 | 2006-06-18 | -0.57 | 6.06 | 6170 | La Nina |
| 57 | 2007 | 2007-06-07 | 0.94 | 4.76 | 3510 | El Nino |
| 58 | 2008 | 2008-05-22 | -1.50 | 5.94 | 5930 | La Nina |
| 59 | 2009 | 2009-06-02 | -0.55 | 5.51 | 4990 | La Nina |
| 60 | 2010 | 2010-06-06 | 1.36 | 5.41 | 4770 | El Nino |
| 61 | 2011 | 2011-07-02 | -1.64 | 6.20 | 6710 | La Nina |
| 62 | 2012 | 2012-04-29 | -1.09 | 5.73 | 5710 | La Nina |
| 63 | 2013 | 2013-05-15 | 0.05 | 6.08 | 6210 | Neutral |
| 64 | 2014 | 2014-05-28 | -0.17 | 5.77 | 5570 | Neutral |
| 65 | 2015 | 2015-03-19 | 0.64 | 4.94 | 3840 | El Nino |
| 66 | 2016 | 2016-06-10 | 2.57 | 4.71 | 3420 | El Nino |
| 67 | 2017 | 2017-06-03 | -0.67 | 5.65 | 5290 | La Nina |
| 68 | 2018 | 2018-05-29 | -0.84 | 6.27 | 6580 | La Nina |
| 69 | 2019 | 2019-05-19 | 0.90 | 5.13 | 4210 | El Nino |
| 70 | 2020 | 2020-06-02 | 0.51 | 6.07 | 6150 | El Nino |
