Michigan's Natural Rivers

Natural Rivers Polygons queried from the hydro polygon data. This data is derived from the DNR Reference Hydro Line 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.从水文多边形数据（hydro polygon data）中查询得到的自然河流多边形数据集。本数据集源自DNRHydrologyOPENDATA服务中的DNR参考水文线（DNR Reference Hydro Line）。密歇根州自然河流项目是一项河流保护举措，通过区划规则对全州范围内选定河系的使用与开发进行监管，以保护其天然品质。该项目旨在保护、维护并改善本州最优质的河系，在保障财产权利人合理开发权益的同时，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乐享。目前密歇根州共划定16处自然河流系统，划定范围涵盖干流及绝大多数支流。在任意划定河流河段周边400英尺范围内，几乎所有建筑施工、土地改造/土方作业以及构筑物搭建均受监管。具体监管认定事宜，请咨询自然河流项目工作人员。