Top Discharges

Streamgauges reporting the most discharge on the Tualatin River



10 Day Trend

Discharge comparison for the highest gauges over the past 10 days



Expected Streamflow Ranges

Streamflow discharge range for this time of year

The Tualatin River is a tributary of the Willamette River in Oregon in the United States. The river is about 83 miles (134 km) long, and it drains a fertile farming region called the Tualatin Valley southwest and west of Portland at the northwest corner of the Willamette Valley. There are approximately 500,000 people residing on 15 percent of the land in the river's watershed. Source: Wikipedia