Stream and Station

Most
Probable
Forecast
(1000 AF)

Most
Probable
Forecast
(% of Avg)

Reasonable
Maximum
(% of Avg)

Reasonable
Minimum
(% of Avg)

30 Year
(1971 - 2000)
Avg Runoff
(1000 AF)

GREY'S RIVER
Palisades abv, WY

APR-SEP

310

79

94

56

394

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

265
325

77
78

102
103

51
52

342
419

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

APR-SEP
APR-JUL
APR-JUL

595
560
975

78
76
63

91
97
78

65
57
47

763
734
1559

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

310

80

101

60

386

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

320
385

79
80

105
102

60
57

403
482

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

109
133

77
77

112
112

42
42

142
173

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

42

79

94

64

53

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

84
73

77
77

95
95

59
59

109
95

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

28

76

108

49

37

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

79

81

112

54

98

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

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

200
225
230
240

78
78
79
78

121
116
121
120

37
41
37
36

256
289
291
307