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

119
790
1560

88
86
78

118
113
103

90
60
53

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

104

88

120

56

118

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

APR-SEP

380

85

111

59

448

NACHES RIVER
Naches nr, WA

APR-SEP

665

80

105

55

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

111

82

111

52

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

193

81

104

58

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

30

65

111

20

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

680
755
2830
3300
3010
3530
3900
3930
2360
2060
2130
3230
3530
3730
23600
24000
17200

87
87
88
88
87
87
89
88
77
71
71
59
61
61
79
79
79

110
114
120
116
110
110
120
120
133
119
118
116
117
116
116
115
130

64
60
55
59
65
65
58
56
21
23
24
2
5
5
43
44
29

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