Ontario Hydro Network (OHN) - Hydrographic Point

A feature is a representation of a real world object, such as a lake, stream, dam or rapid. There are three hydrographic feature classes: points, lines and polys. All may impede or be hazardous to waterflow and/or navigation on a watercourse or waterbody. This data shows natural and manmade point features. Examples include: waterfalls rapids rocks Sea Lamprey barriers Additional Documentation OHN - User Guide (Word) OHN - Data Capture Specification for Hydrographic Features (Word) Status Required: data needs to be generated or updated Maintenance and Update Frequency Not planned: there are no plans to update the data Contact Ontario Ministry of Natural Resources - Geospatial Ontario, [e-mail]地理要素（feature）是对现实世界地物的抽象表达，例如湖泊、溪流、水坝或急流。水文地理要素共分为三类：点、线、面（polys）要素。所有此类要素均可能对水道或水体中的水流及航行造成阻碍，或带来安全隐患。本数据集涵盖自然与人工点要素，示例包括：瀑布、急流、礁石、七鳃鳗阻隔设施。 附加文档：OHN用户指南（Word格式）、OHN水文地理要素数据采集规范（Word格式） 数据状态要求：需生成或更新该数据集 维护与更新频率：无更新计划，暂无该数据的后续更新安排 联系方式：安大略省自然资源部-安大略省地理空间部门，邮箱：[e-mail]