Environmental Areas

Part 323 provides for the designation of environmental areas up to 1,000 feet landward of the ordinary high-water mark of a Great Lake or 1000 feet landward of the ordinary high-water mark of lands adjacent to waters affected by levels of the Great Lakes. If the environmental area boundary encompasses an entire parcel, a 12,000 square foot structure zone is identified where construction can be permitted. Some islands are unique, where their boundaries contain the whole island. The data was digitized from original blueline paper maps and are approximations for the locations of the EA’s. For GIS data questions contact: Jeremy Jones ([e-mail]) or for program related questions contact: Anne Garwood ([e-mail]).第323部分规定了环境区域的划定规则：划定范围为距五大湖普通高潮线向陆侧1000英尺以内，或距受五大湖水位影响的毗邻水域周边普通高潮线向陆侧1000英尺以内的区域。若某环境区域的边界完整包裹一宗土地地块，则需划定12000平方英尺的可获准施工建筑区划。部分岛屿存在特殊情形，其环境区域边界可覆盖全岛范围。本数据集由原始蓝线纸质地图数字化而来，所标注的环境区域（Environmental Area, EA）位置仅为近似值。有关地理信息系统（Geographic Information System, GIS）数据的咨询，请联系杰里米·琼斯（Jeremy Jones，邮箱：[e-mail]）；有关项目相关事宜的咨询，请联系安妮·加伍德（Anne Garwood，邮箱：[e-mail]）。