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

255

66

88

44

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

210
260

66
65

95
94

38
37

319
399

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

APR-SEP
APR-JUL
APR-JUL

545
470
825

75
69
68

89
94
92

60
44
51

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

275

76

98

53

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

270
335

71
71

98
98

48
48

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

94
114

63
63

96
96

28
28

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

31

72

92

52

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

68
59

64
63

83
82

44
43

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

20

56

90

29

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

63

66

102

37

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

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

171
193
164
172

67
67
56
56

118
114
108
108

16
22
3
3

254
286
295
309