USGS 14203500 TUALATIN RIVER NEAR DILLEY, OR

PROVISIONAL DATA SUBJECT TO REVISION

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Station operated in cooperation with the Bureau of Reclamation and the U.S. Army Corps of Engineers.

NOTE: River forecasts and additional data can be obtained at the 
National Weather Service's Advanced Hydrologic Prediction Services web page.

NOTE: The most current shifted rating for this site can be found at USGS Rating Depot website.
Available Parameters Available Period
  
2016-03-26  2025-12-18
1986-10-01  2025-12-18
2007-10-01  2025-12-18
2016-03-26  2025-12-18
2020-02-19  2025-12-18
2016-03-26  2025-12-18
2022-12-17  2025-12-18
2023-10-17  2025-12-18
2023-10-17  2025-12-18
2016-03-26  2025-12-18







 (7)
 
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Summary of all available data for this site
Instantaneous-data availability statement

Discharge, cubic feet per second
Most recent instantaneous value: 987 12-18-2025   09:10 PST
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Dec 18 based on 85 water years of record more
Min
(1977)		 25th
percen-
tile		 Median Mean Most Recent
Instantaneous
Value Dec 18		 75th
percen-
tile		 Max
(1974)
32.0 205 576 789 987 1150 3320

Gage height, feet
Most recent instantaneous value: 16.27 12-18-2025   09:10 PST
Graph of Gage height, feet

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