Shoreline Management Act (SMA) Jurisdiction: Adopted Waterbodies

Ecology created SMA_Poly_Adopt (also known as SMA_Jurisdiction_Lakes) by selecting appropriate water bodies from the National Hydrographic Dataset "NHDWaterbody.lyr" as maintained by the Department of Ecology. The Shoreline Management Act (SMA) applies to lake sand reservoirs greater than 20 acres in area. The area used to make this determination is defined by a continuous ordinary high water mark and may include vegetated areas as well as open water areas. Lakes over 1,000 acres in area and all associated shorelands are shorelines of statewide significance. Lakes of statewide significance are listed by county in WAC 173-20. Water bodies found to be smaller than the 20-acre minimum will be removed from SMA_Poly_Adopt. Water bodies greater than 20 acres not captured in SMA_Poly_Adopt will be added to it. These changes occur on an irregular basis. See Chapter 173-18-044 WAC The SMA_Jurisdiction_Lakes dataset was resynchronized to the March 2019 version of the NHD https://ecology.wa.gov/Water-Shorelines/Shoreline-coastal-management/Shoreline-coastal-planning/Shoreline-Master-Programs华盛顿州生态部（Department of Ecology）维护的国家水文数据集（National Hydrographic Dataset）中遴选合适水体，构建了SMA_Poly_Adopt数据集（亦称SMA_Jurisdiction_Lakes）。岸线管理法案（Shoreline Management Act，简称SMA）适用于面积大于20英亩的湖砂储集区。用于该合规判定的区域以连续普通高水位线为界，可涵盖植被覆盖区域与开阔水域区域。面积超过1000英亩的湖泊及其所有关联岸带均属于全州重要岸线。全州重要湖泊按县级行政单元收录于WAC 173-20条款中。经核查面积小于20英亩下限的水体将被从SMA_Poly_Adopt数据集中移除；而面积大于20英亩却未被纳入该数据集的水体则会被补充加入其中。此类数据集更新工作不定期开展。相关规范请参阅WAC 173-18-044章节。SMA_Jurisdiction_Lakes数据集已同步至2019年3月版的国家水文数据集，详细信息可访问：https://ecology.wa.gov/Water-Shorelines/Shoreline-coastal-management/Shoreline-coastal-planning/Shoreline-Master-Programs