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

101
67

126
126

143
157

111
96

80
53

UMATILLA RIVER
Gibbon nr, OR

Pendleton, OR

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

98
106
197
210

140
139
140
144

174
170
177
178

106
109
104
104

70
76
141
146

JOHN DAY RIVER
Service Creek, OR (1)

APR-SEP

1300

158

212

105

821

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

APR-JUL
APR-SEP

169
175

146
146

194
192

99
101

116
120

N. F. JOHN DAY RIVER
Monument nr, OR

APR-JUL
APR-SEP

805
830

142
142

176

108

567
585

CRESCENT CREEK
Crescent Lake Inflow, OR

APR-SEP

36

171

213

148

21

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

APR-SEP
APR-SEP
APR-SEP

156
750
2370

177
142
125

196
150
142

158
134
106

88
529
1902

LITTLE DESCHUTES RIVER
LaPine nr, OR

APR-SEP

125

160

188

132

78

TUMALO CREEK
Bend nr, OR

APR-SEP

66

147

172

124

45

SQUAW CREEK
Sisters nr, OR

APR-SEP

70

146

161

130

48

CROOKED RIVER
Prineville Res Inflow, OR

MAR-JUL

305

178

223

134

171

OCHOCO CREEK
Ochoco Res Inflow, OR

MAR-JUL

57

173

227

130

33

WHITE RIVER
Tygh Valley blo, OR

APR-SEP

175

140

162

120

125