Laserfiche WebLink
<br />- <br /> <br />PREFACE <br /> <br />The series of manuals on techniques describes procedures for planning and <br />executing specialized work in water-resources investigations. The material is <br />grouped under major subject headings called books and further subdivided <br />into sections and chapters; Section A of Book 3 is on surface water. <br /> <br />Provisional drafts of chapters are distributed to field offices of the U.S, <br />Geological Survey for their use. These drafts are subject to revision because of <br />experience in use or because of advancement in knowledge, techniques, or <br />equipment. After the technique described in a chapter is sufficiently devel. <br />oped, the chapter is published and is sold by the Eastern Distribution Branch. <br />Text Products Section, U.S. Geological Survey. 604 South Pickett Street. <br />Alexandria. V A 22304 (authorized agent of Superintendent of Documents. <br />Government Printing Office). <br /> <br />1II <br /> <br /> <br />,e <br />