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Columbia River Basin. Wallula Gap (/ w ə ˈ l uː l ə /) is a large water gap of the Columbia River in the Northwestern United States, in Southeastern Washington.It cuts through the Horse Heaven Hills basalt anticlines in the Columbia River Basin, just south of the confluence of the Walla Walla and Columbia rivers.
Looking eastbound on I-82 as it approaches the crest of the Horse Heaven Hills. The Horse Heaven Hills lead eastward from the Simcoe Mountains to Wallula Gap.The range is bounded in the west by Satus Creek near Bickleton, the Columbia River in the east and south, and the anticline ridge that roughly follows the Yakima River in the north.
Sentinel Gap Sentinel Gap Ice Age Floods Features. Sentinel Gap is a water gap formed by the Columbia River in the Saddle Mountains, near Mattawa in Washington state. [1] The gap is "a water gap where erosion by the Columbia River was able to keep pace with folding, faulting and uplifting across the Saddle Mountain anticline". [2]
The Walla Walla River is a tributary of the Columbia River, joining the Columbia just above Wallula Gap in southeastern Washington in the United States. The river flows through Umatilla County, Oregon, and Walla Walla County, Washington. [1] Its drainage basin is 1,758 square miles (4,550 km 2) in area. [2]
The Columbia River cut the Wallula Gap, seen from Main Street in Wallula, Washington. A water gap is a gap that flowing water has carved through a mountain range or mountain ridge and that still carries water today. [1] Such gaps that no longer carry water currents are called wind gaps.
The Wallula Gap data center complex would rival the ones developed by Amazon Web Services in neighboring Morrow and Umatilla counties on the Oregon side of the state border. The Washington site is ...
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Wallula Gap: 1980: Benton, Walla Walla: Federal, state, county, municipal The largest and most spectacular of several large water gaps through basalt anticlines in the Columbia River basin. Withrow Moraine and Jameson Lake Drumlin Field: 1980