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

65
43

81
81

101
101

66
66

80
53

UMATILLA RIVER
Gibbon nr, OR

Pendleton, OR

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

53
57
101
110

76
75
72
75

108
107
108
111

44
43
34
37

70
76
141
146

JOHN DAY RIVER
Service Creek, OR (1)

APR-SEP

630

77

136

18

821

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

APR-JUL
APR-SEP

89
92

77
77

129
128

24
26

116
120

N. F. JOHN DAY RIVER
Monument nr, OR

APR-JUL
APR-SEP

435
450

77
77

113
113

41
41

567
585

CRESCENT CREEK
Crescent Lake Inflow, OR

APR-SEP

13

63

106

25

21

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

APR-SEP
APR-SEP
APR-SEP

67
415
1590

76
78
84

103
88
104

49
68
63

88
529
1902

LITTLE DESCHUTES RIVER
LaPine nr, OR

APR-SEP

50

64

103

25

78

TUMALO CREEK
Bend nr, OR

APR-SEP

35

78

106

53

45

SQUAW CREEK
Sisters nr, OR

APR-SEP

38

79

99

60

48

CROOKED RIVER
Prineville Res Inflow, OR

MAR-JUL

99

58

105

11

171

OCHOCO CREEK
Ochoco Res Inflow, OR

MAR-JUL

18

56

108

13

33

WHITE RIVER
Tygh Valley blo, OR

APR-SEP

94

75

99

52

125