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

142
965
2150

105
105
108

115
115
126

96
96
90

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

119

101

113

90

118

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

APR-SEP

450

100

110

90

448

NACHES RIVER
Naches nr, WA

APR-SEP

880

106

125

87

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

138

101

120

84

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

245

103

120

86

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

45

98

133

63

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

660
735
2630
3070
2830
3320
3760
3790
2310
1960
2030
3690
4080
4340
26400
26900
19000

85
85
82
82
82
82
86
85
75
68
68
68
70
71
89
89
88

97
96
100
100
100
100
101
100
106
98
99
96
103
99
103
103
107

72
72
63
63
64
64
71
70
45
37
37
39
38
42
75
75
68

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