Utah Base Flood Elevations

Overview This feature service contains base flood elevation line features for Utah from FEMA's National Flood Hazard Layer. It supports flood hazard mapping and floodplain management by providing elevation information used to understand flood risk across the state. Layer S_BFE represents base flood elevation linework and stores elevation-related attributes, including the elevation value, measurement units, vertical datum, source citation, and unique identifiers used to track each feature. Geographic Coverage The data covers Utah and is provided as part of FEMA's flood hazard information for the state. Use Cases Floodplain analysis and regulatory planning Flood hazard visualization and mapping Support for emergency management and resilience planning Reference for reviewing elevation information in FEMA flood studies Source Published from FEMA's National Flood Hazard Layer (NFHL) web service (layer 16). For more information about these layers, please visit FEMA's website. This layer is updated from the FEMA web service at 3:00 AM every Monday morning.概述 本要素服务包含源自美国联邦紧急事务管理局（Federal Emergency Management Agency, FEMA）国家洪水灾害图层（National Flood Hazard Layer, NFHL）的犹他州基础洪水高程线要素。该服务通过提供可用于研判全州洪水风险的高程数据，为洪水灾害制图与洪泛区管理工作提供有力支撑。其中图层S_BFE为基础洪水高程线要素图层，存储了与高程相关的属性信息，包括高程值、测量单位、垂直基准面、来源引用以及用于追踪各要素的唯一标识符。 地理覆盖范围 本数据覆盖犹他州全域，作为该州FEMA洪水灾害信息的官方组成部分对外提供。 应用场景 1. 洪泛区分析与监管规划 2. 洪水灾害可视化与制图 3. 为应急管理与韧性规划提供支撑 4. 作为FEMA洪水研究中高程信息复核的参考依据 数据来源 本图层源自FEMA国家洪水灾害图层（NFHL）网络服务（图层16）。如需了解此类图层的更多详情，请访问FEMA官方网站。该图层于每周一凌晨3:00从FEMA网络服务自动更新。