Michigan's Natural Rivers Polygons

Natural Rivers Polygons queried from the hydro polygon data. This data is derived from the DNR Reference Hydro Poly of the DNRHydrologyOPENDATA service Michigan's Natural Rivers program is a river protection effort that protects the natural quality of select river systems throughout the state by regulating their use and development through zoning rules. The Natural Rivers Program was developed to preserve, protect and enhance our state's finest river systems for the use and enjoyment of current and future generations by allowing property owners their right to reasonable development while protecting Michigan's unique river resources. There are 16 designated Natural River systems in Michigan. The designation includes the mainstream, as well as most of the tributaries. Nearly all construction, land change/earth moving, and placement of structures is regulated within 400-feet of any designated stream segment. Please consult with Natural Rivers Program staff for specific regulatory determinations.本数据集为从水文多边形数据（hydro polygon data）中调取的天然河流多边形数据集，其数据源自DNRHydrologyOPENDATA服务提供的DNR参考水文多边形（DNR Reference Hydro Poly）。密歇根州天然河流项目是一项河流保护举措，通过分区规则管控河系的使用与开发，以此保护全州范围内选定河系的自然生态质量。本项目旨在保护、维护并优化本州优质河系，在保障财产所有者合理开发权利的同时，守护密歇根州独特的河流资源，以供当代及后世民众使用与畅享。密歇根州目前共设有16处经认定的天然河系，认定范围涵盖干流及绝大多数支流。任何认定河段周边400英尺范围内的几乎所有建筑工程、土地变更/土方作业及构筑物布设活动均受相关监管。具体监管判定事宜，请咨询天然河流项目工作人员。