Stream and Station

Most
Probable
Forecast
(1000 AF)

Most
Probable
Forecast
(% of Avg)

Reasonable
Maximum
(% of Avg)

Reasonable
Minimum
(% of Avg)

30 Year
(1971 - 2000)
Avg Runoff
(1000 AF)

McKENZIE RIVER
Vida nr, OR

APR-SEP

1240

103

1201

S. SANTIAM RIVER
Waterloo, OR

APR-SEP

665

113

587

N. SANTIAM RIVER
Mehama, OR

APR-SEP

1000

120

834

WILLAMETTE RIVER
Salem, OR

APR-SEP

4540

95

4804

CLACKAMAS RIVER
Estacada, OR

APR-SEP

820

110

748

SKAGIT RIVER
Concrete nr, WA

APR-SEP

6920

109

127

91

6365

DUNGENESS RIVER
Sequim nr, WA

APR-SEP

165

109

152

COWLITZ RIVER
Mayfield Res Inflow, WA
Castle Rock, WA

APR-SEP
APR-JUL
APR-SEP

2140
1880
2780

111
111
105

152
158
147

70
65
64

1922
1689
2639

LEWIS RIVER
Ariel, WA

APR-SEP

1470

125

151

99

1176