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

185
1230
2830

137
134
142

152
143
150

122
126
133

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

161

136

149

124

118

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

APR-SEP

620

138

148

129

448

NACHES RIVER
Naches nr, WA

APR-SEP

1180

142

151

123

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

190

140

149

130

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

305

129

139

118

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

60

130

167

94

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

930
1030
3740
4360
4000
4690
5220
5250
3730
3210
3300
6950
7360
7740
36500
37000
26200

119
119
116
116
116
116
119
118
122
111
111
127
127
126
123
122
121

133
135
136
130
136
127
136
135
156
144
144
159
164
158
139
139
144

105
102
96
101
96
104
102
101
87
78
78
95
90
94
106
106
98

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