Excerpt from Erosion and Sedimentation Following Road Construction and Timber Harvest on Unstable Soils in Three Small Western Oregon Watersheds Logging of old growth Douglas - fir timber by high-lead cable methods was completed during the Winter of 1962-63 on three clearcuts of 13, 20, and 28 acres. The logging removed timber from 25 percent of the watershed (fig. Logging debris was burned in September 1963. 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.

Describes: (1) the human activities that may have contributed to the high turbidity levels in western Oregon's municipal watersheds in Feb. 1996, & (2) the efforts under way by federal, state, local, & private land managers & owners, as well as the affected cities, to ensure safe drinking water during future storms. The review is limited to five municipal watersheds -- those serving the cities of Cottage Grove, Eugene, Portland, Salem, & Sandy. Contains recommendations to the Secretary of Agriculture & of the Interior designed to increase the efficiency & effectiveness of efforts to improve water quality & ensure safe drinking water for cities in western Oregon.

A number of studies were undertaken related to effects of clearcut logging on water quality and the process affected in small streams. Water temperature studied before and after logging was increased significantly where stream cover was removed. Energy balances of small streams were measured and predictive models were developed. Road building significantly increased sediment yield in clearcut and patch cut watersheds. Logging itself was not an important sediment contributor. Methods for sampling bed load and suspended sediment were developed. Bed load constituted 70 percent of suspended load during peak discharges.