Stream and Station

Most
Probable
Forecast
(1000 AF)

Most
Probable
Forecast
(% of Avg)

Reasonable
Maximum
(% of Avg)

Reasonable
Minimum
(% of Avg)

30 Year
(1961-1990)
Avg Runoff
(1000 AF)

YAKIMA RIVER
Keechelus Lake Inflow, WA (1)
Cle Elum, WA
Parker nr, WA

APR-SEP
APR-SEP
APR-SEP

133
905
1940

99
99
97

107
108
114

90
90
81

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

110

93

103

82

118

CLE ELUM RIVER
Cle Elum Lake Inflow, WA (1)

APR-SEP

420

94

103

84

448

NACHES RIVER
Naches nr, WA

APR-SEP

820

99

116

81

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

129

95

112

78

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

230

97

112

80

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

45

98

130

65

46

SNAKE RIVER
Jackson Lake Inflow, WY (1)

Palisades Res Inflow, ID (1)

Heise nr, ID

Shelley nr, ID (1)
Blackfoot nr, ID (1)
American Falls Res Inflow, ID (1)
King Hill, ID (1)
Murphy nr, ID (1)
Weiser, ID (1)
Brownlee Res Inflow, ID (3)
Hells Canyon, ID (1)
Lower Granite Res Inflow, WA (1)

APR-JUL
APR-SEP
APR-JUL
APR-SEP
APR-JUL
APR-SEP
APR-JUL
APR-JUL
APR-JUL
APR-JUL
APR-JUL
APR-JUL
APR-JUL
APR-JUL
JAN-JUL
FEB-SEP
APR-JUL

740
825
2710
3160
2910
3420
3850
3880
2310
1910
1960
3490
3860
4140
25700
26100
18200

95
95
84
84
84
84
88
87
75
66
66
64
67
68
86
86
84

107
105
101
101
101
102
101
100
101
94
95
90
96
93
98
98
101

83
84
67
67
68
68
75
74
49
38
36
38
37
42
74
75
68

781
869
3226
3763
3451
4049
4388
4444
3066
2896
2980
5465
5794
6129
29740
30220
21650