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

124
805
1800

92
88
90

107
97
99

77
79
82

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

104

88

101

75

118

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

APR-SEP

395

88

98

79

448

NACHES RIVER
Naches nr, WA

APR-SEP

780

94

103

85

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

127

93

103

84

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

235

99

109

88

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

43

93

130

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

740
825
3050
3560
3230
3790
4250
4280
2820
2530
2590
4520
4780
5000
25000
25200
17400

95
95
95
95
94
94
97
96
92
87
87
83
82
82
84
83
80

109
111
114
109
114
105
113
113
127
120
120
115
120
113
101
100
103

81
79
74
80
74
82
80
79
57
54
54
51
45
50
68
67
58

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