eastbound on U.S. Route 12
- Umatilla River (Wikipedia)
The Umatilla River is an 89-mile (143 km) tributary of the Columbia River in northern Umatilla County, Oregon, United States. Draining a basin of 2,450 square miles (6,300 km2), it enters the Columbia near the city of Umatilla in the northeastern part of the state. In downstream order, beginning at the headwaters, major tributaries of the Umatilla River are the North Fork Umatilla River and the South Fork Umatilla River, then Meacham, McKay, Birch, and Butter creeks.
- Richland, Washington (Wikipedia)
Richland (/ˈrɪtʃlənd/) is a city in Benton County, Washington, United States. It is located in southeastern Washington at the confluence of the Yakima and the Columbia Rivers. As of the 2020 census, the city’s population was 60,560. Along with the nearby cities of Pasco and Kennewick, Richland forms the Tri-Cities metropolitan area.
- Richland (en.wikivoyage.org)
Richland is a city of 51,000 people (2020) in the Columbia River Plateau, where the Yakima River flows into the Columbia. It is the closest city to the Hanford Nuclear Site, where development of its historic nuclear reactor lead to a large national research lab and a waste remediation effort that is the single largest construction project in the country.