9318

• UCREFRP Catalog Number: 9318
• Author: U.S. Fish and Wildlife Service.
• Title: Procedures for Stocking Nonnative Fish Species in the Upper Colorado River Basin.
• USFW Year: 1996.
• USFW - Doc Type: Denver.
• Copyright Material: NO

Table 3
ESTIMATED VIRGIN FLOW AT LEE FERRY
million acre-feet
(1) (2) (3) (4) (5) (6) (7)
Progressive Vrgin
Years Year Estimated Average Average 10-year Flow Minus
to Ending Urgin to Since Moving 101-year
1998 Se t. 30 Flow 1998 1896 Avera a Avera e
.+~ i aya i o.y l 4.3 10.6 14.0 1.5
49 1950 12.9 14.2 15.6 15.0 -2.0
48 1951 11.6 14.3 15.5 14.3 -3.3
47 1952 20.7 14.3 15.6 14.5 5.8
46 1953 10.6 14.2 15.5 14.2 -4.3
45 1954 7.7 14.3 15.4 13.5 -7.2
44 1955 9.2 14.4 15.3 13.1 -5.7
43 1956 10.7 14.5 15.2 13.1 -4.2
42 1957 20.1 14.6 15.3 13.6 5.2
41 1958 16.5 14.5 15.3 13.6 1.6
40 1959 8.6 14.4 15.2 12.9 -6.3
39 1960 11.3 14.6 15.1 12.7 -3.6
38 1961 8.5 14.7 15.0 12.4 -6.4
37 1962 17.3 14.9 15.0 12.1 2.4
36 1963 8.4 14.8 15.0 11.8 -6.5
35 1964 10.2 15.0 14.9 12.1 -4.7
34 1965 18.9 15.1 14.9 13.1 4.0
33 1966 11.2 15.0 14.9 13.1 -3.7
32 1967 11.9 15.1 14.8 12.3 -3.0
31 1968 13.7 15.2 14.8 12.0 -1.2
30 1969 14.4 15.3 14.8 12.6 -0.5
29 1970 15.4 15.3 14.8 13.0 0.5
28 1971 15.1 15.3 14.8 13.7 0.2
27 1972 12.2 15.3 14.8 13.1 -2.7
26 1973 19.4 15.4 14.9 14.2 4.5
25 1974 13.3 15.3 14.8 14.6 -1.6
24 1975 16.6 15.4 14.9 14.3 1.7
23 1976 11.6 15.3 14.8 14.4 -3.3
22 1977 5.8 15.5 14.7 13.8 -9.1
21 1978 15.2 16.0 14.7 13.9 0.3
20 1979 17.9 16.0 14.8 14.3 3.0
19 1980 17.5 15.9 14.8 14.5 2.6
18 1981 8.2 15.8 14.7 13.8 -6.7
17 1982 16.2 16.3 14.7 14.2 1.3
16 1983 24.0 16.3 14.8 14.6 9.1
15 1984 24.5 15.7 14.9 15.8 9.6
14 1985 20.8 15.1 15.0 16.2 5.9
13 1986 21.9 14.6 15.1 17.2 7.0
12 1987 16.9 13.9 15.1 18.3 2.0
11 1988 12.1 13.6 15.1 18.0 -3.3
10 1989 9.7 13.8 15.0 17.1 -5.7
9 1990 8.1 14.4 14.9 16.1 -6.9
8 1991 12.1 15.3 14.9 16.5 -2.8
7 1992 10.3 15.9 14.9 15.9 -4.6
6 1993 18.0 17.0 14.9 15.3 3.1
5 1994 10.3 16.7 14.8 13.9 -4.6
4 1995 20.8 18.9 14.9 13.9 5.9
3 1996 14.2 17.9 14.9 13.1 -0.7
2 1997 21.6 21.6 15.0 13.6 6.6
1 1998 17.2 19.4 15.0 14.2 2.2
Maximum 24.5 18.8 9.6
Minimum 5.6 11.8 -9.3
23