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

95
585
1100

70
64
55

85
73
64

56
55
47

135
915
1994

KACHESS RIVER
Kachess Lake Inflow, WA (1)

APR-SEP

74

63

75

50

118

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

APR-SEP

275

61

71

52

448

NACHES RIVER
Naches nr, WA

APR-SEP

445

53

62

45

832

BUMPING RIVER
Bumping Lake Inflow, WA

APR-SEP

75

55

65

46

136

TIETON RIVER
Rimrock Lake Inflow, WA (1)

APR-SEP

125

53

63

42

237

AHTANUM CREEKS
Tampico nr, WA (2)

APR-SEP

25

54

91

18

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
1900
2210
2030
2380
2600
2620
1000
1710
1713
1730
1890
2010
14100
14300
10000

62
62
59
59
59
59
59
59
33
59
58
32
33
33
47
47
46

78
78
73
73
70
70
76
81
67
192
191
64
70
64
64
64
69

46
46
44
44
47
47
43
37
0
26
24
0
0
1
31
31
24

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