Monitoring of Ruisseau Aux Castors stream

Simon Ricard


Contact Simon Ricard


The project is part of measure 1.4.1 of the Quebec Water Strategy 2018-2030 (SQE) coordinated by the Direction de l'agroenvironnement et du milieu hydrique (DAEMH), of the Ministry of Environment and the Fight against Climate Change (MELCC). This component of the SQE aims to demonstrate the benefits of improving agricultural practices on aquatic health within a small, heavily agricultural watershed, as well as to analyze the economic impacts. In connection with this objective, IRDA is mandated to carry out the design, installation and operation of the hydrometric station located at the outlet of the Ruisseau Aux Castors watershed, located in the regional county municipality of Brome- Missisquoi, selected for the purposes of the pilot project.


The hydrometric data collected at the station will make it possible to describe and interpret the hydrological functioning of the watercourse, as follows:

• measurement of flows throughout the year, including the winter season;
• the origin of the water (segmentation of flows according to the surface or underground hydrological course);
• loads of suspended solids (SS) and exported fertilizing elements (nitrogen and phosphorus);
• the distribution of flows and flows of sediments and nutrients by flow "strata" (base vs flood) and their seasonality.

From 2020 to 2023

Project duration

Water protection



  • Directorate General for Water Policy, , MELCC

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