TUALATIN − NEAR DILLEY (DLLO3)
   State:  Oregon
   County:  Washington
   Latitude:  45 28' 30" North
   Longitude:  123 7' 23" West
   Elevation:  147 ft

   Supporting NWS Forecast Office: WFO Portland

   
Click for NWS Official River Forecasts for DLLO3

   Action Stage:  
16 ft
   Flood Stage:  
17.5 ft
   Major Flood Stage:  
19.5 ft
Daily Historical Statistics for June 23, 2024
Mean Stage: 10.55 ft  Mean Flow: 100 cfs
Max Stage: 12.14 ft  Max Flow: 225 cfs (2015)
Min Stage:  9.00 ft   Min Flow: 20 cfs (1970)

Statistics based on water years: 1940-2022
* statistics estimated based on current rating

Record Stage: 
19.34 ft
Record Flow: 
17100 cfs
Date of Record: 
December 22, 1964

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Hydrograph plot for DLLO3


For Data Used In Plot   "label


Hydrograph plot for DLLO3


For Data Used In Plot   "label