Flood Studies

HELM engineers have an extensive history of partnering with local, county and Federal agencies in the preparation and submittal of FEMA flood hazard maps and non-regulatory Risk MAP products. We have completed FEMA floodplain mapping and flood risk classification for riparian/channel corridors, highly urbanized areas, rural and agricultural areas, highly braided and distributary drainage systems, and large alluvial fan landforms. We have also directly assisted FEMA and County agencies with the preparation of Discovery Studies that are intended to provide an overview of issues within a watershed. In addition, to support both small- and large-scale development projects, HELM has significant experience in preparation, submission and approval of FEMA Conditional Letters of Map Revision (CLOMR) and Letters of Map Revision (LOMR).