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Summary
| Description |
Upload is a series of profiles for the Lake Lewis level reached for various flood sizes. w:Lake Lewis was a temporary lake in the Pacific Northwest region of North America, largely formed by the Missoula Floods in about the 14th millennium B.C. Lake Lewis was formed when the restricted flow of waters[1] from periodic cataclysmic floods from w:Glacial Lake Missoula, pluvial Lake Bonneville, and perhaps from subglacial outbursts, backed up through the constriction formed by the Wallula Gap in the Horse Heaven Hills (southern Washington). Water also backed up further downstream on the Columbia River between Washington and Oregon, delaying the drainage of Lake Lewis. The water remained for a period of weeks before the flood waters drained through Wallula Gap, just southeast of the Tri-Cities area. Lake Lewis reached an elevation of about Template:Ft to m above sea level (today's sea level) before subsiding. |
| Source | Last, George V.; Bruce N. Bjornstad and Byron M. Gessel (2009) Distribution of Mammoth (Mammuthus) and Erratic Finds Relative to the Size of Ice Age Floods in Southeastern Washington State, Pacific Northwest National Laboratory, PNNL-SA-68903 |
| Author | Last |
| Permission (Reusing this file) |
Published by the U.S. Department of Energy's Pacific Northwest National Laboratory - confirmed with their legal department that reproductin publication on Wikipedia is acceptable if cited. |
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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- ↑ Flow was restricted by a hydraulic dam—a restriction to the flow rate caused by a narrowed reach in a river valley.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:49, 14 November 2009 | | 1,046 × 786 (152 KB) | Williamborg | {{Information |Description= Upload is a series of profiles for the Lake Lewis level reached for various flood sizes. Lake Lewis was a temporary lake in the Pacific Northwest region of North America, largely formed by the Missoula Floods in |
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