Author: John Ripley Freeman

Publisher: Forgotten Books

Published: 2017-11-20

Total Pages: 648

ISBN-13: 9780331526042

Excerpt from Regulation of Elevation and Discharge of the Great Lakes: Designs for Gates, Sluices, Locks, Etc., In the Niagara and St. Clair Rivers The preservation of Niagara Falls. Studies of the variation of rainfall from year to year. Studies of the amount of obstruction of outflow from the several lakes caused by ice-gorges. A determination of the amount and rate of evaporation from the surface of each Great Lake. The accuracy of the recorded measurements of lake elevations and discharges. The rate, and amount in recent years, of earth-tilt in the Great Lakes region. The effect of earth-tilt on future harbor depths and depths over the lock-sills at the Sault St. Marie. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.