Tualatin River near Dilley

1. 19.50 ftexpect major and widespread flooding in the upper Tualatin Valley, with numerou road closures likely and several homes flooded or isolated due to surrounding flood waters.
2. 18.50 fta few homes are threatened by floodwaters. Numerous roads are flooded and may be closed, and widespread lowland agricultural flooding occurs.
3. 17.50 ftseveral minor roads begin to flood and may be closed. Widespread lowland agricultural flooding occurs at this and higher stages.
4. 17.00 ftexpect inundation of low areas, including some farmland, along the river channel.

Most recent crests

• December 19, 2025: 17.79 ft
• November 25, 2016: 17.67 ft
• December 9, 2015: 17.93 ft
• March 30, 2012: 17.57 ft
• January 9, 2009: 17.48 ft
• January 2, 2009: 17.88 ft
• December 5, 2007: 19.00 ft
• January 11, 2006: 17.88 ft
• December 31, 2005: 17.69 ft
• January 30, 2004: 17.68 ft

• UpstreamTualatin River at Gaston
• DownstreamTualatin River at Golf Course Rd near Cornelius
• Wapato Creek
• Gales Creek at Forest Grove
• Scoggins Creek at Scoggins Dam
• Scoggins Creek at Henry Hagg Lake
• Sain Creek at Gaston
• Dairy Creek at Hwy 8 near Hillsboro

Forecasts by the Northwest River Forecast Center. Forecasts are issued routinely year-round. Gauge reading affected by reservoir operations.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.