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

340

88

116

59

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

275
345

86
86

122
116

50
59

319
399

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

APR-SEP
APR-JUL
APR-JUL

620
590
1020

85
87
84

100
118
106

70
57
64

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

325

89

113

66

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

320
395

84
84

108
113

59
60

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

108
131

72
72

121
112

23
30

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

35

81

103

60

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

81
71

76
76

100
100

51
51

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

28

78

122

43

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

80

83

127

49

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

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

200
225
220
230

79
79
75
74

140
133
120
120

18
25
28
28

254
286
295
309