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)

S.F. WALLA WALLA RIVER
Milton nr, OR

MAR-SEP
APR-JUL

66
40

83
75

100
102

65
49

80
53

UMATILLA RIVER
Gibbon nr, OR

Pendleton, OR

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

52
56
100
104

74
74
71
71

100
100
104
104

47
47
36
36

70
76
141
146

JOHN DAY RIVER
Service Creek, OR (1)

APR-SEP

515

63

105

20

821

M. F. JOHN DAY RIVER
Ritter, OR (1)

APR-JUL
APR-SEP

76
79

66
66

105
104

26
28

116
120

N. F. JOHN DAY RIVER
Monument nr, OR

APR-JUL
APR-SEP

360
370

63
63

91
91

36
36

567
585

CRESCENT CREEK
Crescent Lake Inflow, OR

APR-SEP

09

45

73

19

21

DESCHUTES RIVER
Crane Prairie Inflow, OR
Benham Falls, OR
Moody, OR

APR-SEP
APR-SEP
APR-SEP

51
320
1400

58
60
74

72
66
90

44
55
57

88
529
1902

LITTLE DESCHUTES RIVER
LaPine nr, OR

APR-SEP

36

46

67

26

78

TUMALO CREEK
Bend nr, OR

APR-SEP

33

73

94

56

45

SQUAW CREEK
Sisters nr, OR

APR-SEP

35

73

87

59

48

CROOKED RIVER
Prineville Res Inflow, OR

MAR-JUL

66

39

61

19

171

OCHOCO CREEK
Ochoco Res Inflow, OR

MAR-JUL

12

37

92

02

33

WHITE RIVER
Tygh Valley blo, OR

APR-SEP

74

59

80

40

125