The Cheney–Palouse Tract of Washington's Channeled Scablands

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The Cheney–Palouse Tract of Washington’s Channeled Scablands SPRAGUE 231 e k LINCOLN SPOKANE C r a b C r e COUNTY SPRAGUE COUNTY 90 395 23 RITZVILLE o u t h F o e S r k k WHITMAN C ADAMS r a a COUNTY b k L COUNTY C r e e e u water g 261 flow r a direction S p 26 127 r Map Area u PINE o During the last ice age, a lobe of the Cordilleran Ice Sheet formed an This map shows the CITY ice dam that blocked a major valley in what is now western topographic evidence of c LAMONT Montana, creating Glacial Lake Missoula. Between 15,000 and the Missoula Floods on a s 13,000 years ago the ice began to recede and the lake portion of the Channeled S periodically breached the ice dam. These breaches Scablands in eastern Washington L created an estimated 40 catastrophic floods that known as the Cheney–Palouse L e I flowed westward during this time period. k scabland tract. Smooth, linear H k These ice-age floods, also known as the a features are former channels of the L L c Missoula Floods, swept across what is floods, while the more textured land U k K now eastern Washington and c adjacent to the pathways was higher in A o o R R onward to the Pacific Ocean elevation, and was thus unaffected by the A r K along the Columbia River flooding. d corridor. The floods scoured e the landscape on a massive Flooded areas were often scoured down to b scale, leaving behind bedrock, as can be seen east of Sprague Lake scarred terrain known and the Karakul Hills. In the Cheney-Palouse as the Channeled scablands region, the former channels are also RITZVILLE Scablands. Flood EWAN occupied by dozens of lakes. The largest and features are so deepest scabland lake is Rock Lake in the huge, they can northeast portion of the map. be seen from space. In the area adjacent to the flooded ST. JOHN channels, much of the landscape is covered in loess (windblown glacial silt). Loess k e e covers the agriculturally productive Palouse region, C r k the area of rolling hills in the southeastern corner of o c R the map. S L L I H O G N E R A LITTLE M COVE BIG COVE CANYON CANYON v e r R i e u s l o P a TERKSALEEZE RALSTON BUTTE TEXAS DRAW MASON DRAW WINONA ENDICOTT C o w r C e r BENGE e v e i k R e s u o E l COYOTE a S BUTTE P U n k U i o n F e e l a t C r O L RATTLESNAKE RATTLESNAKE CANYON A FLAT P DUSTY LA CROSSE E H T N STALEY COULEE 0 5 10 Miles WASHTUCNA HOOPER WASHTUCNA COULEE.

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and 12 Watchable Wildlife Units For more information, please contact: Grant County Tourism Commission P.O. Box 37, Ephrata, WA 98823 509.765.7888 • 800.992.6234 In Grant County, Washington TourGrantCounty.com TOP TRAILS Grant County has some of the most scenic and pristine vistas, hiking trails and outdoor 26 recreational opportunities in Washington State. and 12 Watchable Wildlife Units Grant County is known for its varied landscapes on a high desert plateau with coulees, lakes, in Grant County Washington reservoirs, sand dunes, canals, rivers, creeks, and other waterways. These diverse ecosystems Grant County Tourism Commission For Additional copies please contact: support a remarkable variety of fish and PO Box 37 Jerry T. Gingrich wildlife species that contribute to the economic, Ephrata, Washington 98837 Grant County Tourism Commission recreational and cultural life of the County. www.tourgrantcounty.com Grant County Courthouse PO Box 37 Ephrata, WA 98837 No part of this book may be reproduced in (509) 754-2011, Ext. 2931 any form, or by any electronic, mechanical, or other means, without permission in For more information on writing from the Grant County Tourism Grant County accommodations Commission. www.tourgrantcounty.com © 2019, Grant County Tourism Commission Second printing, 10m Trails copy and photographs Book, map and cover design by: provided by: Denise Adam Graphic Design Cameron Smith, Lisa Laughlin, J. Kemble, Veradale, WA 99037 Shawn Cardwell, Mark Amara, (509) 891-0873 Emry Dinman, Harley Price, [email protected] Sebastian Moraga and Madison White Printed by: Rewriting and editing by: Mark Amara Pressworks 2717 N. Perry Street Watchable Wildlife copy and Spokane, Washington 99207 photographs provided by: (509) 462-7627 Washington Department of [email protected] Fish and Wildlife Photograph by Lisa Laughlin CONTENTS CONTENTS Grant County Trails and Hiking Grant County Watchable Wildlife Viewing Upper Grand Coulee Area 1.
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