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The current Federal delineation manual, dated January 1987, used in the Clean Water Act Section 404 regulatory program for the identification and The U.S. Corps of Engineers 1987 Wetland Delineation Manual is free and available online as a downloadable pdf. I see no point to purchasing it from Amazon. During this same review period, the Corps of Engineers has agreed to conduct field review of its wetland delineation manual (Environmental Laboratory, 1987). Wetlands Research Program Technical Report Y-87-1 (on-line edition) Corps of Engineers Wetlands Delineation Manual by Environmental Laboratory January 1987The EPA issued a notice on January 19, 1993, declaring that the agency will now use this 1987 Corps of Engineers manual to identify wetlands. Corps of Engineers wetlands delineation manual ; Publisher, [U.S. Army Engineer Waterways Experiment Station] ; Date published, 1987-01 ; Subject, Wetlands Wetlands Delineation Manual by Environmental Laboratory. Um. January 1987 - Final Report. Approved For Public Release; Distribution Is Unlimited.