Alpha & Omega Group was selected in June of 2011 to develop emergency action plans (EAPs) for dams 1, 2, 3, 5A, and 20A in Wake County, and again in 2015 for sites 11A, 13, 18, 22, and 23.

The scope for each dam included obtaining the most recent information from NC Floodplain Management Program and collecting data via GIS of Wake County LiDAR contours, aerials and other pertinent information. We field-verified existing conditions and developed hydrologic and hydraulic models using the data obtained from Natural Resources Conservation Service, Dam Safety, and HEC-RAS models to develop Federal Emergency Management Agency flood elevation maps. A&O assisted Wake County with other agency input including Dam Safety, NRCS, Risk Management, Public Safety, and GIS.

A&O prepared EAPs and inundation mapping for all dams.