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

115
65

144
123

136
149

109
96

80
53

UMATILLA RIVER
Gibbon nr, OR

Pendleton, OR

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

89
97
184
189

127
128
130
129

157
154
163
161

97
101
99
99

70
76
141
146

JOHN DAY RIVER
Service Creek, OR (1)

APR-SEP

1160

141

184

99

821

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

APR-JUL
APR-SEP

151
157

130
131

170
171

91
93

116
120

N. F. JOHN DAY RIVER
Monument nr, OR

APR-JUL
APR-SEP

745
770

131
132

159

104

567
585

CRESCENT CREEK
Crescent Lake Inflow, OR

APR-SEP

36

171

202

148

21

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

APR-SEP
APR-SEP
APR-SEP

145
720
2300

165
136
121

179
141
138

150
131
105

88
529
1902

LITTLE DESCHUTES RIVER
LaPine nr, OR

APR-SEP

125

160

181

140

78

TUMALO CREEK
Bend nr, OR

APR-SEP

65

144

164

126

45

SQUAW CREEK
Sisters nr, OR

APR-SEP

70

146

165

132

48

CROOKED RIVER
Prineville Res Inflow, OR

MAR-JUL

250

146

185

108

171

OCHOCO CREEK
Ochoco Res Inflow, OR

MAR-JUL

51

155

209

117

33

WHITE RIVER
Tygh Valley blo, OR

APR-SEP

170

136

157

117

125