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

295

76

98

54

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

250
310

78
78

108
106

47
49

319
399

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

APR-SEP
APR-JUL
APR-JUL

640
605
1040

88
89
85

102
114
107

73
63
62

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

325

89

112

67

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

325
405

86
86

107
112

64
61

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

97
118

65
65

111
98

19
30

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

36

84

104

64

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

82
72

77
77

96

57

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

25

69

107

39

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

66

69

106

48

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

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

149
168
138
145

59
59
47
47

110
105
119
105

8
13
9
13

254
286
295
309