Wetland regulationWetland mappingWetland delineationWetlands are mapped across the USA for compliance with 搂404 of the Clean Water Act using field-collected data and protocols in the 1987 Federal Wetlands Delineation Manual (3-factor method). The National Wetlands Inventory (NWI) maps wetlands and ...
Location and extent of any other wetland signatures (e.g. vernal pool stratified vegetation rings) Basic Methodology for each determination Wet/Dry Season Determination Protocol: Based on ERDC instructions for calculating dry season provided in the regional supplements to the 1987 Delineation Manual Data...