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

142
940
2000

105
103
100

124
117
116

86
88
84

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

122

103

122

85

118

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

APR-SEP

460

103

118

87

448

NACHES RIVER
Naches nr, WA

APR-SEP

830

100

115

84

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

140

103

122

84

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

240

101

118

83

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

47

102

143

62

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

640
710
2530
2950
2700
3170
3600
3620
2240
1890
1940
3400
3670
3990
26900
27500
19700

82
82
78
78
78
78
82
81
73
65
65
62
63
65
90
91
91

102
104
106
102
106
97
105
104
118
106
107
114
111
115
122
122
134

63
60
51
55
51
60
59
59
28
24
23
10
16
15
59
60
48

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