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

190
1250
2800

141
137
140

159
148
154

123
125
127

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

164

139

156

122

118

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

APR-SEP

615

137

149

126

448

NACHES RIVER
Naches nr, WA

APR-SEP

1140

137

152

122

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

180

132

149

115

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

300

127

141

111

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

59

128

167

90

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

970
1080
3990
4660
4270
5010
5580
5620
4110
3630
3710
7950
8380
8780
37900
38500
28300

124
124
124
124
124
124
127
126
134
125
124
145
145
143
127
127
131

141
145
147
143
146
139
147
146
173
162
162
188
185
183
152
152
164

108
104
101
105
101
109
108
107
95
89
87
101
105
103
103
104
97

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