Platte River Ecosystem Resources and Management, with Emphasis on the Big Bend Reach in Nebraska
Tables
Table 16. Wet, average, and dry years based upon mean annual flow at Grand Island, 1942-1993 (M. Butler, USFWS, personal communication). Mean annual flow is ranked from highest to lowest for 1943-1992. The lowest 25 percent of the ranking were labeled dry years, while the upper 33 percent were termed wet years. The remaining years are average. The historic flows were partitioned into wet, average, and dry years accoriding to the 33 percent, 42 percent, and 25 percent distribution.
| Water Year | Mean CFS | Percentile | Count |
| Wet Conditions | |||
| 1983 | 5,380 | 2.00 | 16 |
| 1984 | 5,359 | 4.00 | |
| 1973 | 3,715 | 6.00 | |
| 1974 | 3,257 | 8.00 | |
| 1985 | 2,808 | 10.00 | |
| 1987 | 2,721 | 12.00 | |
| 1971 | 2,691 | 14.00 | |
| 1980 | 2,655 | 16.00 | |
| 1986 | 2,642 | 18.00 | |
| 1949 | 1,910 | 20.00 | |
| 1952 | 1,879 | 22.00 | |
| 1947 | 1,734 | 24.00 | |
| 1970 | 1,703 | 26.00 | |
| 1988 | 1,688 | 28.00 | |
| 1951 | 1,635 | 30.00 | |
| 1972 | 1,616 | 32.00 | |
| Average Conditions | |||
| 1967 | 1,426 | 34.00 | 21 |
| 1966 | 1,404 | 36.00 | |
| 1969 | 1,376 | 38.00 | |
| 1962 | 1,365 | 40.00 | |
| 1958 | 1,341 | 42.00 | |
| 1965 | 1,260 | 44.00 | |
| 1948 | 1,199 | 46.00 | |
| 1979 | 1,182 | 48.00 | |
| 1950 | 1,179 | 50.00 | |
| 1960 | 1,163 | 52.00 | |
| 1989 | 1,153 | 54.00 | |
| 1990 | 1,121 | 56.00 | |
| 1945 | 1,119 | 58.00 | |
| 1975 | 1,086 | 60.00 | |
| 1944 | 1,067 | 62.00 | |
| 1977 | 1,042 | 64.00 | |
| 1943 | 1,039 | 66.00 | |
| 1968 | 1,008 | 68.00 | |
| 1982 | 1,005 | 70.00 | |
| 1976 | 978 | 72.00 | |
| 1978 | 974 | 74.00 | |
| Dry Conditions | |||
| 1963 | 957 | 76.00 | 13 |
| 1953 | 941 | 78.00 | |
| 1992 | 928 | 80.00 | |
| 1946 | 909 | 82.00 | |
| 1959 | 872 | 84.00 | |
| 1981 | 825 | 86.00 | |
| 1961 | 806 | 88.00 | |
| 1991 | 786 | 90.00 | |
| 1964 | 709 | 92.00 | |
| 1954 | 702 | 94.00 | |
| 1957 | 698 | 96.00 | |
| 1955 | 570 | 98.00 | |
| 1956 | 414 | 100.00 | |
Previous Section -- Table 15
Return to Contents
Next Section -- Table 17
