Cesspools in the City of Trois-Rivières.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

The sewer system (secondary and main networks) on the Island of Montreal includes 170 overflow structures. An overflow structure consists of an underground control chamber that directs wastewater into the collection and interception network under normal operating conditions to the treatment plant. During rain, melt or during an operation associated with maintenance or impairment, the inputs exceed the regulatory capacity and this excess is overflowed by the structure in question in the watercourses. It is under these conditions that part of the water combining rainwater and wastewater flows to the receiving watercourse for a short period of time (via the outfall). Obviously, the receiving watercourse to the south is the St. Lawrence River and that to the north, the Rivière des Prairies.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

An element of the drainage system intended for the collection and delivery of runoff water to the sewer line or ditch. Structure, equipped with a spillway, used to capture runoff and deliver it, as appropriate, to the storm sewer or combined sewer line. The information associated with the geographic data corresponds to the type of sump, date of installation, status, owner, and jurisdiction. __CAUTION__: This data is published annually, so it does not include updates made during the year. For this reason, they should under no circumstances be used for engineering purposes without validation by the City.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

This set of punctual data shows the manholes located on the Island of Montreal. These manholes are compartments through which sewers can be accessed in order to clean, inspect and maintain them. The manholes are placed at regular intervals on the right-hand section of the main pipe. In straight sections, the maximum distance between two manholes is 120 meters. The manholes are generally placed at the beginning of a network, i.e. at the head of the furthest section and at the points where the pipe changes direction, altitude, slope and/or diameter. The information associated with the geographic data corresponds to the type and material of the manhole, date of installation, status, owner and jurisdiction. __CAUTION__: This data is published annually, so it does not include updates made during the year. For this reason, they should under no circumstances be used for engineering purposes without validation by the City.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Linear location of drainage pipes under the responsibility of the Ministry of Transport and Sustainable Mobility (MTMD). Inventory item of a transverse type or pipe connecting to the ditch, whose diameter is more than 30 cm and less than 3 m.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**