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

390

101

114

87

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

320
400

100
100

122
120

78
81

319
399

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

APR-SEP
APR-JUL
APR-JUL

800
780
1320

110
115
108

122
133
125

97
95
91

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

395

109

127

90

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

400
495

105
105

121
126

89
86

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

171
205

114
113

157
137

71
89

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

48

112

129

95

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

108
92

101
99

117

81

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

33

92

121

60

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

76

79

112

53

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

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

315
355
390
410

124
124
132
133

157
154
178
151

91
94
85
114

254
286
295
309