Resources and information
Explore the key concepts and natural processes shaping Lake Massawippi and its watershed.
Lake level and practical resources
To check Lake Massawippi’s water level, use the readings from Québec hydrometric station 030241 at the footbridge wharf in North Hatley. Recent government data are preliminary and may be adjusted after validation. Current readings and historical data are linked below.
North Hatley dam: understanding the 2025 study
The September 2025 pre-feasibility study examines the possible effects of lowering the spillway crest on flood water levels. It was prepared for the Municipality of Hatley by GBI, with hydraulic analysis by FLUVIO. We share it as an information source, not as a decision or recommendation by Bleu Massawippi.
Preventing the spread of invasive species
Before moving to another body of water, consult the official cleaning guidance for boats and equipment. The 2026 Guide des bonnes pratiques en milieu aquatique brings together precautions to help prevent the introduction and spread of invasive species. The resources below are published in French.
Read the study and municipal context
The watershed
Discover our series of video clips and information sheets on the essential components of a watershed.
Eutrophication
Eutrophication is a process of excessive nutrient accumulation in a body of water, which promotes algae growth and accelerates its aging.
Rain gardens
A rain garden is a landscaped feature designed to naturally capture and absorb rainwater while promoting biodiversity.