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)

GREY'S RIVER
Palisades abv, WY

APR-SEP

280

72

94

66

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

235
295

74
74

97
99

52
60

319
399

HENRYS FORK
Ashton nr, ID
St. Anthony, ID
Rexburg nr, ID

APR-SEP
APR-JUL
APR-JUL

670
655
1120

92
97
92

104
116
109

79
77
75

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

345

95

113

76

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

350
435

92
92

108
114

76
75

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

110
133

73
73

117
97

30
49

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

39

91

108

74

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

88
74

82
80

98

61

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

25

69

103

34

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

65

68

106

29

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

APR-JUL
APR-SEP
APR-JUL
APR-SEP

190
215
200
210

75
75
68
68

108
105
115
87

41
45
22
49

254
286
295
309