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

165
1110
2450

122
121
123

152
148
148

93
95
98

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

143

121

153

89

118

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

APR-SEP

530

118

144

92

448

NACHES RIVER
Naches nr, WA

APR-SEP

990

119

144

94

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

165

121

151

92

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

270

114

137

90

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

54

117

163

72

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

800
890
3250
3790
3470
4070
4550
4600
3070
2660
2750
5300
5730
6110
32700
33200
23800

102
102
101
101
101
101
104
104
100
92
92
97
99
100
110
110
110

125
130
133
130
132
124
135
135
157
140
139
154
155
155
147
146
160

79
73
69
73
68
79
73
72
44
44
45
46
42
44
73
74
60

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