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The objective of this manual is to provide guidance in the use of basic engineering principles, techniques, and procedures for the planning, design, installation, and maintenance of soil and water conservation practices. The material presented is limited to the types of conservation practices which are used most often. Engineering procedures and data for more complex practices are included in the various sections of the SCS National Engineering Handbook.

Source: https://directives.sc.egov.usda.gov/viewerFS.aspx?hid=21429