Hydrographic surfaces cut within the official boundaries of the Montreal Metropolitan Community, including the territory of the Kahnawake reserve and excluding the agglomeration of Montreal. This dataset is complementary to the data from the [hydrography of the Montreal agglomeration] (https://donnees.montreal.ca/dataset/hydrographie). They are made available for use in a basemap to put the agglomeration of Montreal into context.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Geometric and conventional representation of the hydrographic network. The 3D hydrographic layer is represented by several natural or physical elements associated with the presence of water. These elements form part of the layers in the digital cartographic compilation.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

The National Hydro Network (NHN) focuses on providing a quality geometric description and a set of basic attributes describing Canada's inland surface waters. It provides geospatial digital data compliant with the NHN Standard such as lakes, reservoirs, watercourses (rivers and streams), canals, islands, drainage linear network, toponyms or geographical names, constructions and obstacles related to surface waters, etc. The best available federal and provincial data are used for its production, which is done jointly by the federal and interested provincial and territorial partners. The NHN is created from existing data at the 1:50 000 scale or better. The NHN data have a great potential for analysis, cartographic representation and display and will serve as base data in many applications. The NHN Work Unit Limits were created based on Water Survey of Canada Sub-Sub-Drainage Area.