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

103
630
1140

76
69
57

85
78
74

67
60
46

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

83

70

81

61

118

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

APR-SEP

305

68

78

59

448

NACHES RIVER
Naches nr, WA

APR-SEP

425

51

69

34

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

71

52

69

36

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

123

52

68

36

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

21

46

78

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

610
680
1990
2320
2180
2560
2680
2700
1080
1710
1740
1820
1970
2150
14800
15100
10800

78
78
62
62
63
63
61
61
35
59
58
33
34
35
50
50
50

90
89
79
79
80
80
74
74
62
87
88
59
64
61
62
62
66

66
67
45
45
46
46
49
47
9
31
29
10
10
9
38
38
33

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