As part of California legislation, the state is identifying areas within the Central Valley affected by the 100-year flood event in non-urban areas, and the 200-year flood event in urban areas. We are one of four teams selected for the Central Valley Floodplain Evaluation and Delineation project, tasked with developing base information and models for the upper San Joaquin River region. A flood risk project of this scale has never been attempted before in the West, and the resulting multi-stage floodplain evaluations will be used to meet state and FEMA requirements under the California’s Central Valley Flood Protection Plan.