This presentation will discuss a Conditional Letter of Map Revision (CLOMR) completed for Zone A in Dover, Ohio, in 2024. This Zone A revision includes updated hydrology, topographic data and considerations for a proposed subdivision. The subdivision is designed to mitigate flood risks by setting finished floor elevations at least two feet above the Base Flood Elevation (BFE) to account for the 100-year floodplain and anticipated climate impacts. Hydraulic and hydrologic analyses were conducted to determine the 100-year discharge and establish the 100-year floodplain. A StreamStats analysis was performed to estimate the 100-year flow for the watershed. An HEC-HMS study was also conducted, determining the 100-year flow rate, which was used to establish the floodplain, accounting for upstream development in the City of Dover and increased precipitation due to climate change. The FEMA effective model was revised to better understand the existing floodplain, mapping and water surface elevations at various cross-sections along the creek for the 100-year flood event. New terrain was created using Civil 3D to incorporate elevation changes for the proposed subdivision. HEC-RAS simulations were run for both existing and proposed conditions, where the existing model was based on current FEMA data, and the proposed model incorporated new terrain and flow adjustments reflecting the subdivision and climate change impacts.