Priority Planning Area Map

This map identifies areas near, or hydrologically connected to, tidal water bodies at increased risk of inundation under a 3.3-foot sea level rise scenario, projected to occur as soon as 2070. This map was produced by Broward County staff and represents the elevation of mean higher high water in 2070 based on the 2019 Southeast Florida Regional Climate Change Compact Unified Sea Level Rise Projection and 2007 LiDAR digital elevation model. The Priority Planning Areas are limited to the coastal communities with land east of the SFWMD's salinity control structures. A 40-inch sea level rise scenario projected from Mean Higher High Water (MHHW) at South Port Everglades tide station is equivalent to an elevation of 3.86 feet NAVD88. The feature class is a representation of this 40-inch sea level rise scenario on the 2007 LiDAR, with a pixel resolution of 50 feet. This map is used as the basis for assessing future flood risk as a function of land elevation and coastal water levels and thus aids in informing adaptation needs in the context of land use considerations. Areas within the PPA are most directly affected by the influence of sea level rise on surface flooding and groundwater levels; these impacts are most pronounced in coastal areas seaward of salinity control structures.本地图识别出在预计最早于2070年出现的3.3英尺海平面上升情景下，与潮汐水体邻近或存在水文连通关系、且洪水淹没风险升高的区域。本地图由布劳沃德县（Broward County）工作人员制作，基于2019年《东南佛罗里达区域气候变化协定统一海平面上升预测》与2007年激光雷达（LiDAR）数字高程模型，呈现2070年的平均高高潮位（Mean Higher High Water, MHHW）高程。优先规划区（Priority Planning Areas, PPA）仅限南佛罗里达水资源管理区（SFWMD）盐分控制构筑物东侧陆地区域的沿海社区。基于南港埃弗格莱兹潮位站平均高高潮位（MHHW）推算的40英寸海平面上升情景，等效于北美垂直基准面1988（NAVD88）下3.86英尺的高程。本要素类基于2007年LiDAR数据呈现该40英寸海平面上升情景，像素分辨率为50英尺。本地图可作为评估未来洪水风险的基础——该风险由陆地高程与沿海水位共同决定，因此可为土地利用规划背景下的气候适应需求提供决策支撑。优先规划区（PPA）内的区域受海平面上升引发的地表积水与地下水位变化影响最为直接；此类影响在盐分控制构筑物向海一侧的沿海区域表现最为显著。