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
920
1980

105
101
99

123
112
112

87
89
86

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

118

100

117

83

118

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

APR-SEP

450

100

112

88

448

NACHES RIVER
Naches nr, WA

APR-SEP

815

98

113

83

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

133

98

115

81

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

235

99

114

84

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

46

100

138

62

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
2730
3180
2940
3440
3920
3950
2480
1930
2000
3770
4060
4390
27600
28200
20200

85
85
85
85
85
85
89
89
81
67
67
69
70
72
93
93
93

101
105
108
103
108
100
109
109
120
103
105
113
110
112
117
117
127

69
64
62
66
62
70
70
69
42
30
29
25
30
32
68
69
60

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