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Rock Island topographic map
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About this map
Name: Rock Island topographic map, elevation, terrain.
Location: Rock Island, Douglas County, Washington, United States (47.36691 -120.14913 47.37966 -120.12614)
Average elevation: 702 ft
Minimum elevation: 607 ft
Maximum elevation: 1,378 ft
Douglas County trails, hiking, mountain biking, running and outdoor activities
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Other topographic maps
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Moses Coulee
United States > Washington > Douglas County
Pleistocene glaciers advanced onto the Waterville Plateau, with the Okanogan Lobe of the Cordilleran Ice Sheet reaching as far south as the town of Withrow. Evidence for glaciation on the Waterville Plateau includes polished and striated bedrock, glacial erratics, drumlinoid topography, eskers, moraines,…
Average elevation: 2,185 ft