Description: A 2D HEC-RAS hydraulic model was developed, calibrated, and applied to evaluate river-related flooding through the Snohomish River watershed. Floodplain conditions were characterized within the study area for historical, mid-century (2040-2069), and late-century (2070-2099) time periods. For each time period, The calibrated model was run to produce flood depths, velocities, water surface elevations, and inundation extents, for the 2-, 5-, 10-, 25-, 50-, 100-, and 500-year flood events. For more information visit: <a href="https://snohomishcountywa.gov/DocumentCenter/View/81632/Hydraulic-and-Hydrologic-Modeling-Report---Snohomish">https://snohomishcountywa.gov/DocumentCenter/View/81632/Hydraulic-and-Hydrologic-Modeling-Report---Snohomish</a>