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

375

97

119

74

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

310
385

97
96

129
125

66
68

319
399

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

APR-SEP
APR-JUL
APR-JUL

770
750
1270

105
111
104

120
136
126

91
84
81

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

390

107

129

85

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

395
490

104
104

125
121

83
87

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

163
197

109
108

153
141

63
73

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

45

105

125

85

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

104
91

97
98

118

79

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

32

89

132

55

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

81

84

125

52

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

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

240
270
270
285

94
94
92
92

146
140
161
123

43
49
21
61

254
286
295
309