Wallula Gap (/wəˈluːlʌɡæp/) is a large water gap of the Columbia River in the northwest United States in southeast 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.
It has been recognized as a National Natural Landmark by the National Park Service as a site that provides an important illustration of the geological history of the United States.[1]
^"National Registry of Natural Landmarks" (PDF). U.S. National Park Service. June 2009. Archived from the original (PDF) on 2011-05-16. Retrieved 2013-03-31.
WallulaGap (/wəˈluːlʌ ɡæp/) is a large water gap of the Columbia River in the northwest United States in southeast Washington. It cuts through the Horse...
the Yakima, Walla Walla, Touchet and Tucannon river valleys. WallulaGap is a large water gap through basalt anticlines in the Columbia River basin just...
Oregon and Washington, and WallulaGap, Washington, United States Cumberland Narrows, Maryland, United States Delaware Water Gap, New Jersey and Pennsylvania...
showed. For example, their calculated water depth at the Pasco Basin–WallulaGap transition zone is about 190 m, significantly less than the 280–300 m...
is a tributary of the Columbia River, joining the Columbia just above WallulaGap in southeastern Washington in the United States. The river flows through...
exposed these lava flows, laying bare many layers of the basalt flows at WallulaGap, the lower Palouse River, the Columbia River Gorge and throughout the...
range. The Horse Heaven Hills lead eastward from the Simcoe Mountains to WallulaGap. The range is bounded in the west by Satus Creek near Bickleton, the...
Umatilla, leading to several attempts at finding a compromise along the WallulaGap or in other areas southeast of the Tri-Cities. In 1973, Oregon and Washington...
made way down the Columbia river Channel where a 'choke-point' known as WallulaGap caused the restriction of flow. Floodwaters began ponding near the Tri-Cities...
surrounds it, as they are often carried very far from their origin. WallulaGap – Large water gap of the Columbia River through basalt anticlines in the U.S....
recreational activities. WallulaGap List of lakes in Oregon List of hydroelectric dams on the Columbia River "Lake Wallula - Washington Department of...
known as a "road train", one of the earliest motorized vehicles. From WallulaGap on the Columbia River, the Old Cariboo Trail was built over the route...
type former lake Primary inflows Channeled Scablands Primary outflows WallulaGap of the Columbia River Basin countries United States Max. length 200 mi...
Salmon-Clearwater was established in the Columbia River's modern path through WallulaGap, although the Columbia itself still flowed somewhere to the west. The...
deposited. Water depths have been estimated at 1,000 feet (300 m) at WallulaGap and 400 feet (120 m) over modern Portland, Oregon. Sediments were also...
viticultural area in southeast Washington and northeast Oregon, east of Lake Wallula, to be known as "Walls Walls Valley." At the time, Walla Walla Valley viticultural...
(Dalles Group, etc.) exposed in tributary stream valleys downstream of WallulaGap Miocene-Pliocene Snipes Mountain Conglomerate in the Yakima Valley at...
Territory, taking with it areas north of the Columbia River (west of WallulaGap) and the 46th parallel. 1855 - October: A volunteer militia attacks a...
with deep sheer-walled canyons in the Grand Coulee, Moses Coulee, the WallulaGap, and the Columbia River Gorge. There are giant ripple marks 30 ft (9...
400 to 15,700 calendar years ago. During the floods, flow through the WallulaGap was slow enough such that water pooled in a temporary lake, Lake Lewis...
Columbia River on the Washington/Oregon border above The Dalles and below WallulaGap. Lake Lewis; 16,000 YBP in central Washington, new Yakima. Glacial Lake...
Sims Corner Eskers and Kames Steptoe and Kamiak Buttes Umtanum Ridge Water GapWallulaGap Withrow Moraine and Jameson Lake Drumlin Field Davis Canyon General...
the Missoula Floods have been estimated at 1,250 feet (380 m) at the WallulaGap (in present-day Washington), 830 feet (250 m) at Bonneville Dam, and...
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