Excerpt from Evaluation of Ground Water Resources, Vol. 5: Sonoma County Alexander Valley and the Healdsburg area (figures 1 and 2) have been experiencing a general population increase, as has all of Sonoma County. Because the popu lation has increased, so has the demand for water. Ground water, water stored underground in permeable rock or soil formations, plays an important role in meeting this demand. More than water wells have been identified in Sonoma County, of which about are in Alexander Valley and the Healdsburg area. Ground water accounts for about 60 percent of the total water demand for the middle Russian and Dry Creek units of the Russian River service area (finlayson, 1980; see references at end of report). Ground water is used for domestic, municipal, industrial, and agricultural purposes. The cities of Cloverdale and Healdsburg rely principally on ground water to meet municipal water needs. 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.