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
60

113
113

132
149

97
77

80
53

UMATILLA RIVER
Gibbon nr, OR

Pendleton, OR

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

79
86
162
166

113
113
115
114

154
145
160
148

71
81
70
74

70
76
141
146

JOHN DAY RIVER
Service Creek, OR (1)

APR-SEP

1030

125

184

66

821

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

APR-JUL
APR-SEP

135
140

116
117

169
167

64
66

116
120

N. F. JOHN DAY RIVER
Monument nr, OR

APR-JUL
APR-SEP

645
665

114
114

149

78

567
585

CRESCENT CREEK
Crescent Lake Inflow, OR

APR-SEP

28

133

180

99

21

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

APR-SEP
APR-SEP
APR-SEP

134
685
2200

152
129
116

179
140
136

125
119
96

88
529
1902

LITTLE DESCHUTES RIVER
LaPine nr, OR

APR-SEP

106

136

175

97

78

TUMALO CREEK
Bend nr, OR

APR-SEP

59

131

160

108

45

SQUAW CREEK
Sisters nr, OR

APR-SEP

63

131

151

112

48

CROOKED RIVER
Prineville Res Inflow, OR

MAR-JUL

220

129

175

83

171

OCHOCO CREEK
Ochoco Res Inflow, OR

MAR-JUL

41

124

182

67

33

WHITE RIVER
Tygh Valley blo, OR

APR-SEP

152

122

146

99

125