Excerpt from Advance Report on the Sedimentation Survey of Barcroft Reservoir, Alexandria, Virginia: September 17, 1937-March 8, 1938 The survey revealed that 85 acre-feet cubic yards) of sediment had accumulated in the reservoir at an average rate of acre-feet per year, which is equivalent to about 17 cubic feet per acre of drainage area. The loss of original storage, however, has been only percent per year, or percent to the date of sur vey. These data indicate that storage loss through silting is not a serious problem.in this reservoir under existing conditions. 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.