The City’s original Master Area Drainage Study (MADS) was completed in 1999. The new MADS will reflect the significant changes in drainage by accounting for development, newer/better topographic data, and more accurate NOAA Atlas 14 rainfall data. The new flood study will determine the flow magnitudes, flow depth and flow velocities for the 10-, 100- and 500-year flooding events. The study will utilize a new 2-dimensional model to update the hydrology and hydraulics and be considered best available data to be used for all future planning studies, design projects and flood risk assessments.
The revised flood hazard mapping studies will provide residents and business owners more accurate regulatory floodplain limits, which helps to determine the need for flood insurance.