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

77
46

96
87

100
113

72
60

80
53

UMATILLA RIVER
Gibbon nr, OR

Pendleton, OR

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

58
63
112
117

83
83
79
80

113
109
112
113

53
57
48
44

70
76
141
146

JOHN DAY RIVER
Service Creek, OR (1)

APR-SEP

670

82

124

40

821

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

APR-JUL
APR-SEP

91
94

78
78

118
117

39
40

116
120

N. F. JOHN DAY RIVER
Monument nr, OR

APR-JUL
APR-SEP

455
470

80
80

108

53

567
585

CRESCENT CREEK
Crescent Lake Inflow, OR

APR-SEP

22

105

137

83

21

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

APR-SEP
APR-SEP
APR-SEP

99
800
1770

113
114
93

149
121
110

76
110
77

88
702
1902

LITTLE DESCHUTES RIVER
LaPine nr, OR

APR-SEP

79

101

122

81

78

TUMALO CREEK
Bend nr, OR

APR-SEP

40

89

107

70

45

SQUAW CREEK
Sisters nr, OR

APR-SEP

42

88

101

74

48

CROOKED RIVER
Prineville Res Inflow, OR

MAR-JUL

191

112

139

61

171

OCHOCO CREEK
Ochoco Res Inflow, OR

MAR-JUL

33

100

140

49

33

WHITE RIVER
Tygh Valley blo, OR

APR-SEP

118

94

115

75

125