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

138
905
2000

102
99
100

117
108
109

87
90
92

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

115

97

110

85

118

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

APR-SEP

445

99

109

90

448

NACHES RIVER
Naches nr, WA

APR-SEP

825

99

108

90

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

135

99

109

90

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

240

101

111

90

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

46

100

137

63

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

670
745
2730
3190
2940
3450
3930
3960
2490
1920
1990
3620
3930
4270
26700
27200
19200

86
86
85
85
85
85
90
89
81
66
67
66
68
70
90
90
89

100
102
104
99
105
97
106
111
116
99
100
98
105
101
106
106
112

72
70
65
70
65
74
73
67
46
33
33
34
31
38
73
74
66

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