This is a beautifully detailed, laser engraved and precision cut topographical Map of Banks Lake in Grant and Douglas Counties in Washington with the following interesting stats carved into it:
Max. Length: 31 Miles
Surface Area: 26,886 Acres
Avg. Depth: 46 Feet
Max. Depth: 177 Feet
Shore Length: 135 Miles
Interesting factoid: Part of the Columbia Basin Project, Banks Lake occupies the northern portion of the Grand Coulee, a formerly dry coulee near the Columbia River, formed by the Missoula Floods during the Pleistocene epoch. Grand Coulee Dam, built by the United States Bureau of Reclamation on the Columbia River created Franklin D. Roosevelt Lake, the reservoir on the river behind the dam. The surface of Lake Roosevelt is several hundred feet above the original Columbia River, making it easier to pump water 280 feet up and out of the river's canyon into the adjacent Grand Coulee. Two low earth-fill dams, Dry Falls Dam and North Dam, keep the water in the Grand Coulee, thus creating the reservoir named Banks Lake. It is named after Frank A. Banks, the construction supervisor at Grand Coulee Dam.
(Not all of this information made it onto the map, we just love to read up on the lakes we design).
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