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

197

51

65

37

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

153
191

48
48

67
67

28
28

319
399

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

APR-SEP
APR-JUL
APR-JUL

485
415
740

66
61
61

79
80
78

54
43
44

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

245

67

86

49

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

245
305

64
65

87
97

47
47

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

70
85

47
47

70
70

22
22

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

27

63

80

46

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

63
51

59
55

72
72

37
37

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

15

43

64

22

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

46

48

73

27

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

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

100
113
50
53

39
40
17
17

73
70
46
46

06
09
01
01

254
286
295
309