Emergency 21 : A condition that develops unexpectedly, which endangers the structural integrity of a dam and/or downstream human life or property, and requires immediate action
Tom Woosley (Program Manager), Georgia Safe Dams Program Inspections and Emergency Action Plans, Glossary, GA Department of Natural Resources, Safe Dams Program, Atlanta, GA, USA 2015. http://www.damsafetyaction.org/GA/other/glossary.p hp, (ND Emr/ Flood - Amer) {909}
National Dam Safety Program, U.S. Department of Homeland Security Federal Emergency Management Agency Interagency Committee on Dam Safety, Federal Guidelines For Dam Safety: Glossary of Terms For Dam Safety (FEMA-148), Washington DC, USA 2004. http://www.damsafety.org/media/Documents/PDF/fema- 148.pdf, (Dam Sfty - Amer) {890}