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

90
56

113
106

130
132

95
79

80
53

UMATILLA RIVER
Gibbon nr, OR

Pendleton, OR

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

78
85
157
164

111
112
111
112

141
137
143
147

81
84
74
82

70
76
141
146

JOHN DAY RIVER
Service Creek, OR (1)

APR-SEP

930

113

156

71

821

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

APR-JUL
APR-SEP

125
130

108
108

147
147

68
70

116
120

N. F. JOHN DAY RIVER
Monument nr, OR

APR-JUL
APR-SEP

610
630

108
108

135

80

567
585

CRESCENT CREEK
Crescent Lake Inflow, OR

APR-SEP

25

119

152

98

21

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

APR-SEP
APR-SEP
APR-SEP

108
605
2020

123
114
106

137
120
123

108
109
90

88
529
1902

LITTLE DESCHUTES RIVER
LaPine nr, OR

APR-SEP

88

113

133

92

78

TUMALO CREEK
Bend nr, OR

APR-SEP

44

98

119

81

45

SQUAW CREEK
Sisters nr, OR

APR-SEP

48

100

114

86

48

CROOKED RIVER
Prineville Res Inflow, OR

MAR-JUL

176

103

146

59

171

OCHOCO CREEK
Ochoco Res Inflow, OR

MAR-JUL

38

115

167

64

33

WHITE RIVER
Tygh Valley blo, OR

APR-SEP

129

103

124

84

125