Excerpt from Water Powers of the Cascade Range: Part 1. Southern WashingtonAll distances were determined by stadia and all elevations by vertical angles. Initial elevations were taken from railroad bench marks and reduced to United States Geological Survey datum by known equations. The upper portion of Klickitat River is included in the Mount Adams quadrangle, and elevations were adjusted to agree with a line of United States Geological Survey bench marks following the upper course of the stream'. The datum of the survey was taken from the Spokane, Portland and Seattle Railway crossing of Klickitat River near Lyle.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.