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The Yakima River is a tributary of the Columbia River in south central and eastern Washington state, named for the indigenous Yakama people. Lewis and Clark mention in their journals that the Chin-nâm pam (or the Lower Snake River Chamnapam Nation) called the river Tâpe têtt [6] (also rendered Tapteete), [7] possibly from the French tape-tête, meaning "head hit".
Tributaries and sub-tributaries are hierarchically listed in order from the mouth of the Columbia River upstream. Major dams and reservoir lakes are also noted. Map of the Columbia drainage Basin with the Columbia River highlighted and showing the major tributaries
The Yakima River Delta is an area of land in Richland, Washington where the Yakima River enters the Columbia River at River Mile 335. [1] It hosts several protected areas and is crossed by State Route 240 .
The Columbia River (Upper Chinook: Wimahl or Wimal; Sahaptin: Nch’i-Wàna or Nchi wana; Sinixt dialect swah'netk'qhu) is the largest river in the Pacific Northwest region of North America. [14] The river forms in the Rocky Mountains of British Columbia, Canada.
The landmark is characterized by a series of steep-sided ridges in the Columbia River basalt which are cut through axially by the Yakima River. A water gap was cut by the Yakima River through anticlines named "Manastash Ridge" and "Umtanum Ridge". These anticlines are part of the Yakima Fold Belt near the western edge of the Columbia River Plateau.
The Yakima River Bridge was demolished in 2004 and replaced by a set of two bridges carrying three lanes each, as well as a multi-use bicycle and pedestrian trail. [60] The western portion of the Columbia River Trail interchange at the Richland Wye was converted into a roundabout that opened to traffic in June 2007. [61]
The name “Columbia Valley" was derived from the river that flows through and defines the region. In 1792, the river was named after the American-built 212-ton fully-rigged ship "Columbia Rediviva" commanded by Captain Robert Gray when he discovered the river mouth on the Pacific coast and navigated into it.
The Yakima River then formed and flowed through Badger Canyon and the Amon Basin, which were carved by the Columbia. Around 10,000 years ago, the Missoula Floods further altered the landscape, opening up the Horn Rapids area for the Yakima River to flow through. The West Fork now utilizes the canyons left by the Yakima and Columbia Rivers. [9]