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

235

61

80

41

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

187
235

59
59

85
86

33
32

319
399

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

APR-SEP
APR-JUL
APR-JUL

530
450
800

73
66
66

86
88
85

59
45
46

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

260

71

93

50

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

255
315

67
67

86
93

50
45

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

81
98

54
54

99
86

09
21

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

30

70

88

51

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

68
59

64
63

82
63

45
63

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

19

53

81

31

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

55

57

85

35

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

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

137
155
118
124

54
54
40
40

96
93
98
81

11
1611
01

254
286
295
309