Excerpt from Distribution of Wells in the Central Part of the Western San Joaquin Valley, California The San Joaquin Valley, California, is one of the most productive agricultural areas in the United States. However, agriculture in large parts of the valley may be adversely affected by high levels of selenium and other soluble trace ele ments that occur in soil, ground water, and agricultural drain water. The occur rence and movement of soluble chemical constituents is related to the movement of ground water in which they are dis solved. Thus, the ground-water flow system must be understood in order to manage these constituents. 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.