Saint John River and St. Croix River Basin Long-term Water Quality Monitoring Data

Long-term freshwater quality monitoring data for over 32 sites in the Saint John and St. Croix River basins for the past 15 years or longer for nutrients, metals, major ions, and other physical-chemical variables are included in this dataset. Monitoring is conducted by Environment and Climate Change Canada (ECCC) and New Brunswick Environment and Local Government through the Canada-New Brunswick Water Quality Monitoring Agreement to assess water quality status and long-term trends, detect emerging issues, establish water quality guidelines and track the effectiveness of remedial measures and regulatory decisions.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 18:42 (UTC)
Created	April 17, 2026, 18:42 (UTC)
contact_email	msqeinformation-wqmsinformation@ec.gc.ca
contact_person	{}
criticality_level	[]
data_dictionary	[]
geographic_scope	["0"]
open_canada_collection	primary
open_canada_date_published	2016-05-02 00:00:00
open_canada_keywords	{"en": ["Surface water", "Trends", "Environmental indicators", "Water quality", "Federal provincial agreements", "Metals", "Environment", "Lakes", "Rivers", "International Joint Commission (IJC)", "Observation/Measurement", "Monitoring", "Surveillance", "Status", "Nutrients", "Major ions", "Transboundary"], "fr": ["Eau de surface", "Tendances", "Indicateur environnemental", "Qualité de l'eau", "Accord fédéral-provincial", "Métal", "Environnement", "Lac", "Fleuve / Rivière", "Commission mixte internationale (CMI)", "Observation et mesures", "Monitoring", "Surveillance", "L'état", "Les nutriments", "Les ions majeurs", "Transfrontalier"]}
open_canada_subject	["nature_and_environment"]
sensitivity_level	unrestricted
title_fr	Données de monitoring de la qualité de l'eau à long terme du Bassin du fleuve Saint-Jean et de la rivière Sainte-Croix
update_frequency	P1M