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

100
640
1270

74
70
64

93
85
80

55
55
48

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

81

69

87

50

118

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

APR-SEP

320

71

87

56

448

NACHES RIVER
Naches nr, WA

APR-SEP

500

60

76

45

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

91

67

86

48

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

157

66

84

48

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

25

54

95

14

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

535
595
2100
2450
2230
2610
2890
2910
1300
1940
2000
2620
2850
2970
18800
19400
14000

69
68
65
65
65
64
66
65
42
67
67
48
49
48
63
64
65

91
90
88
88
84
83
88
95
88
108
109
100
97
98
94
95
108

47
46
42
42
47
46
43
35
0
26
25
0
1
0
32
33
22

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