U.S. Army Corps of Engineers Wetlands Delineation Manual
Manual, January 1987 (.pdf 1.3MB)
Interim Regional Supplement: Atlantic and Gulf Coastal Plain Region, October 2008 (.pdf 7.9MB)
Interim Regional Supplement: Eastern Mountains and Piedmont Region, July 2010 (.pdf 6.5MB)
U.S. Army Corps of Engineers Norfolk District Wetland Hydrology Determinations for the 2010 Monitoring Season, March 2010 (.pdf 46KB)

Wetland and SAV Mapping Standards
Chesapeake Bay Submerged Aquatic Vegetation (SAV) Ground Survey Directions (.pdf 47 KB)
Federal Geographic Data Committee Wetlands Mapping Standard, July 2009 (.pdf 0.6MB)
U.S. Fish and Wildlife Service Data Collection Requirements and Procedures for Mapping Wetland, Deepwater, and Related Habitats of the United       States, July 2009 (.pdf 1.1MB)

Articles
Delineations call for Adjustment in Northeast Wetland Plant Indicator List, March 2003 (.pdf 0.3MB)
Echinochloa Crusgalli (Barnyard Grass) Indicator Status Correction, December 2000 (.pdf 1.9MB)
NOVA Comparison: NWI Maps vs. Field-Delineated Wetlands, Winter 1995 (.pdf 3.1MB)