Municipal Separate Storm Sewer System (MS4) Urbanized Areas Expanded from 2010
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The data illustrates the expanded “Urbanized Area” for the Municipal Separate Storm Sewer System (MS4) program from the 2020 census data. "Urbanized area" means a place and the adjacent densely populated territory that together have a minimum population of 50,000 people, as defined by the United States bureau of the census and as determined by the latest available decennial census. The data is provided to the Michigan Department of Environment, Great Lakes, and Energy (EGLE) by the United States Environmental Protection Agency. The urbanized area is the regulated area for municipalities that are regulated under the MS4 program, including but not limited to cities, township, and villages. "2020 Census Populations of 50K or more" and "Automatically Designated Areas" was provided by US EPA in July 2023 and combined with Michigan Open GIS Data (Minor Civil Divisions: Cities, Townships and Villages) using ESRI's ArcGIS Pro Software. Tools used include Pairwise Intersect, Merge, Pairwise Erase, and manual editing to combine the two layers. Please contact the individuals below with any questions. Christe Alwin: ALWINC@michigan.gov (point of contact) Patrick Klein: kleinp3@michigan.gov (creator) FIELD NAME DESCRIPTION Name Short name of the municipality (Lansing) Label The municipalities full name (City of Lansing) Type The type of municipality (city, township, or village) SQMILE Area of the shape in Square Miles ACRES Area of the shape in Acres Published in June 2024. Learn more about EGLE's Municipal Storm Water Program. Additional information describing Part 21 Wastewater Discharge Permits.
本数据集展示了基于2020年人口普查数据生成的城市独立雨水管网系统（Municipal Separate Storm Sewer System, MS4）项目扩展后的「城市化区域」范围。根据美国人口普查局的定义，「城市化区域」指人口总数不少于5万人的聚居区域及其毗邻的人口密集连片区域，该定义基于最新可获取的十年一次人口普查结果确定。本数据集由美国环境保护署向密歇根州环境、大湖与能源部（Michigan Department of Environment, Great Lakes, and Energy, EGLE）提供。该城市化区域为受MS4项目监管的自治市镇的法定监管范围，涵盖但不限于市、镇区与村。「2020年人口普查人口达5万及以上区域」与「自动划定区域」数据集由美国环境保护署于2023年7月提供，研究团队使用ESRI ArcGIS Pro软件将其与密歇根州开放地理信息系统（Geographic Information System, GIS）数据（次要行政分区：市、镇区与村）进行融合。本次融合所用工具包括两两相交（Pairwise Intersect）、合并（Merge）、两两擦除（Pairwise Erase）工具及手动编辑操作，以完成两个图层的合并。如有任何疑问，请联系以下人员：克里斯蒂·阿尔文（Christe Alwin）：ALWINC@michigan.gov（项目联系人）；帕特里克·克莱因（Patrick Klein）：kleinp3@michigan.gov（数据集创建者）。 字段说明如下： 名称（Name）：自治市镇的简称（例如兰辛） 标签（Label）：自治市镇的完整名称（例如兰辛市） 类型（Type）：自治市镇的行政类别（市、镇区或村） SQMILE：面状要素的平方英里面积 ACRES：面状要素的英亩面积 本数据集于2024年6月发布。如需了解密歇根州环境、大湖与能源部的市政雨水项目详情，请查阅相关资料；关于第21部分废水排放许可证的更多信息，请参见对应说明文档。
