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The valley is formed by the meandering Tualatin River, a tributary of the Willamette River at the northwest corner of the Willamette Valley, east of the Northern Oregon Coast Range. Most of the valley is located within Washington County, separated from Portland by the Tualatin Mountains. Communities in the Tualatin Valley include Banks, Forest ...
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 lake and creek are part of the Tualatin River’s watershed in the Tualatin Valley. [4] It is located about 5 miles (8.0 km) southwest of Forest Grove. [5] The lake is named for Henry Hagg, an Oregon dairy farmer who was active in local agricultural committees during the first half of the twentieth century. [6] Scoggins Dam
The main roads in the area include Oregon Route 47 (also known as Tualatin Valley Highway) that runs north-south, along with southwest Anderson and Dilley roads. Dilley, classified as a populated place, sits at an elevation of 197 feet (60 m) above sea level. [2] The U.S. Geologic Survey operates a water gauge on the Tualatin River at Dilley. [16]
The Clackamas people once occupied the land that later became Lake Oswego, [7] but diseases transmitted by European explorers and traders killed most of the natives. Before the influx of non-native people via the Oregon Trail, the area between the Willamette River and Tualatin River had a scattering of early pioneer homesteads and farms.
Hillsboro (/ ˈ h ɪ l z b ər oʊ / ⓘ HILZ-burr-oh) is a city in the U.S. state of Oregon and is the county seat of Washington County. [7] Situated in the Tualatin Valley on the west side of the Portland metropolitan area, the city hosts many high-technology companies, such as Intel, locally known as the Silicon Forest.
Tualatin (/ t u ˈ ɔː l ə t ɪ n / ⓘ too-AW-lə-tin) is a city located primarily in Washington County in the U.S. state of Oregon. A small portion of the city is also located in neighboring Clackamas County .
Rivergrove is a city in Clackamas County, Oregon, United States.A small portion of the city extends into nearby Washington County.Its name is a portmanteau of the Tualatin River, which forms its southern border, and Lake Grove, a community that is now part of Lake Oswego.