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

180
1180
2730

133
129
137

144
139
155

124
120
119

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

153

130

142

119

118

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

APR-SEP

590

132

142

122

448

NACHES RIVER
Naches nr, WA

APR-SEP

1200

144

162

125

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

193

142

158

124

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

300

127

143

110

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

63

137

172

102

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

905
1010
3840
4480
4110
4820
5340
5380
3860
3280
3400
6870
7320
7710
35800
36300
25500

116
116
119
119
119
119
122
121
126
113
114
126
126
126
120
120
118

128
128
137
137
137
137
136
136
157
144
146
154
159
154
134
134
137

102
104
100
100
101
101
107
106
95
83
83
97
94
97
107
107
99

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