The 31-Mile Grand Coulee tunnel
Last updated 2/12/2020 at 10:05am
A proposal to build a 31-mile water tunnel under the Grand Coulee was made by Frank Harris, a civil engineer from Renton. His plan, publicly announced in December 1935, was to expedite the irrigation of approximately 500,000 acres of land in the Columbia Basin by a gravity system, without waiting for Grand Coulee power. He figured that the amount of water required to lift and fill what is now Bank...
For access to this article please
sign in or
subscribe.
Reader Comments(0)