1987 Wetland Delineation Manual - The Wetlands Regulation Center

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Wetland Delination Manual, 1987 4 CONTENTS ABSTRACT 2 PREFACE 2 PART I: INTRODUCTION 5 Background 5 Purpose and Objectives 5 Scope 5 Organization 7 Use 8 PART II: TECHNICAL GUIDELINES 12 Page Wetlands 12 Deepwater Aquatic Habitats 13 Nonwetlands 13 PART III: CHARACTERISTICS AND INDICATORS OF HYDROPHYTIC VEGETATION, HYDRIC SOILS, AND WETLAND HYDROLOGY 14 Hydrophytic Vegetation 14 Hydric Soils 19 Wetland Hydrology 24 PART IV: METHODS 29 Section A. Introduction 29 Section B. Preliminary Data Gathering and Synthesis 29 Section C. Selection of Method 38 Section D. Routine Determinations 38 Section E. Comprehensive Determinations 51 Section F. Atypical Situations 60 Section G. Problem Areas 68 REFERENCES 72 BIBLIOGRAPHY 74 APPENDIX A: GLOSSARY 77 APPENDIX C: VEGETATION 91 APPENDIX D: HYDRIC SOILS 98 Modifications and Clarifications to the 1987 Wetland Delineation Manual 101 25 February 1997 Environmental Techncal Services Co. 834 Castle Ridge Rd Austin, Texas 78746
Wetland Delination Manual, 1987 5 CORPS OF ENGINEERS WETLANDS DELINEATION MANUAL PART I: INTRODUCTION Background 1. Recognizing the potential for continued or accelerated degradation of the Nation's waters, the US Congress enacted the Clean Water Act (hereafter referred to as the Act), formerly known as the Federal Water Pollution Control Act (33 U.S.C. 1344). The objective of the Act is to maintain and restore the chemical, physical, and biological integrity of the waters of the United States. Section 404 of the Act authorizes the Secretary of the Army, acting through the Chief of Engineers, to issue permits for the discharge of dredged or fill material into the waters of the United States, including wetlands. Purpose Purpose and Objectives 2. The purpose of this manual is to provide users with guidelines and methods to determine whether an area is a wetland for purposes of Section 404 of the Act. Objectives 3. Specific objectives of the manual are to: a. Present technical guidelines for identifying wetlands and distinguishing them from aquatic habitats and other nonwetlands. Definitions of terms used in this manual are presented in the Glossary Appendix A. b. Provide methods for applying the technical guidelines. c. Provide supporting information useful in applying the technical guidelines. Scope 4. This manual is limited in scope to wetlands that are a subset of “waters of the United States” and thus subject to Section 404. The term “waters of the United States” has broad meaning and incorporates both deep-water aquatic habitats and special aquatic sites, including wetlands (Federal Register 1982), as follows: a. The territorial seas with respect to the discharge of fill material. 25 February 1997 Environmental Techncal Services Co. 834 Castle Ridge Rd Austin, Texas 78746
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1987 Wetland Delineation Manual - The Wetlands Regulation Center

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