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

97
590
1090

72
64
55

81
74
73

62
55
43

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

77

65

76

57

118

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

APR-SEP

285

64

74

54

448

NACHES RIVER
Naches nr, WA

APR-SEP

430

52

71

33

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

72

53

71

35

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

123

52

70

34

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

23

50

85

15

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

485
540
1910
2230
2040
2390
2620
2640
1020
1750
1780
1780
1950
2070
14100
14300
10000

62
62
59
59
59
59
60
59
33
60
60
33
34
34
47
47
46

76
74
77
77
77
77
74
74
64
91
91
61
66
62
62
61
66

49
50
41
41
41
41
45
35
2
30
28
4
1
5
33
34
27

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