TUALATIN--NEAR DILLEY
(
DLLO3
)
State:
Oregon
County:
WASHINGTON
Latitude:
45 28' 30" North
Longitude:
123 7' 23" West
Elevation:
147 feet
Supporting WFO:
Portland
NWS Official River Forecasts Click Here
Action Stage:
16'
Flood Stage:
17.5'
Major Flood Stage:
19.5'
Record Stage:
19.34'
Record Flow:
17100 cfs
Date of Record:
December 22, 1964
Daily Historical Flow Statistics
for July 03
Mean Stage:
9.85 ft
Mean Flow:
105 cfs
Max Stage:
11.86 ft
Max Flow:
275 cfs (2015)
Min Stage:  
8.22 ft
Min Flow:
11 cfs (1965)
Statistics based on water years:
1940-2020
The 4-10 Day Trend Forecast is based on model guidance only. Daily variation and uncertainty of forecasts during this period is high.
For Data Used In Plot
For Data Used In Plot
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DLLO3