Awl, J., Christie, J., Heber, M., Wilen, B. 2009. A New Mapping Standard: National Wetlands Newsletter. Association of State Wetland Managers, Washington, DC. Volume 31, Number 5. 10-11 Management, wetlands, GIS https://www.aswm.org/pdf_lib/christie_mapping.pdf This document outlines the new national standards for wetlands mapping as approved by the Federal Geographic Data Committee.