Excerpt from Soil Survey of the El Centro Area, California The El Centro area is located in Imperial County in the extreme southern part Of the Colorado Desert, the southern boundary of the area being the international boundary line between the United States and Mexico. The northern, eastern, and western boundaries of the area are formed by certain section and township lines of the recent resurvey of this region by the United States Land Office. The east ern boundary line of the area is about 35 miles west of the California Arizona State line. The area surveyed has an extent Of 540 square miles, or acres. 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.