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

310

80

99

61

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

260
325

82
81

107
107

55
53

319
399

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

APR-SEP
APR-JUL
APR-JUL

685
645
1110

94
95
91

107
118
111

80
74
72

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

345

95

116

73

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

350
435

92
92

111
121

75
73

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

118
143

79
79

123
113

34
48

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

41

95

114

77

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

85
74

79
80

98

61

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

27

75

111

42

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

71

74

105

48

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

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

190
215
205
215

75
75
69
70

118
114
129
100

32
37
18
42

254
286
295
309