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

1350

112

1201

S. SANTIAM RIVER
Waterloo, OR

APR-SEP

790

135

587

N. SANTIAM RIVER
Mehama, OR

APR-SEP

1100

132

834

WILLAMETTE RIVER
Salem, OR

APR-SEP

5330

111

4804

CLACKAMAS RIVER
Estacada, OR

APR-SEP

920

123

748

SKAGIT RIVER
Concrete nr, WA

APR-SEP

6890

108

126

90

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

2110
1850
2740

110
110
104

152
157
146

68
62
62

1922
1689
2639

LEWIS RIVER
Ariel, WA

APR-SEP

1460

124

154

94

1176