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

141
920
2010

104
101
101

136
128
126

76
75
76

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

123

104

134

71

118

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

APR-SEP

460

103

128

76

448

NACHES RIVER
Naches nr, WA

APR-SEP

820

99

123

73

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

140

103

136

76

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

240

101

123

77

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

47

102

148

57

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

675
750
2820
3290
2990
3510
3850
3880
2310
1890
1980
4180
4530
4850
27500
27900
20000

86
86
87
87
87
87
88
87
75
65
66
76
78
79
92
92
92

111
109
113
113
119
106
119
102
131
113
113
133
134
135
129
128
143

55
57
57
57
54
62
57
44
19
17
19
19
22
23
56
57
42

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