Saint John and St. Croix River Basins Water Quality Data for 15+ Years

Over 32 monitoring sites in the Saint John and St. Croix River basins provide long-term freshwater quality data. The dataset includes measurements for nutrients, metals, major ions, and other physical-chemical variables collected for the past 15 years or longer. Monitoring is conducted by Environment and Climate Change Canada and New Brunswick Environment and Local Government under a bilateral agreement.

Use Cases

• Assessing water quality status and long-term trends based on multi-year monitoring data.
• Detecting emerging environmental issues based on changes in nutrient and metal concentrations.
• Establishing or validating water quality guidelines based on measured physical-chemical variables.
• Tracking the effectiveness of remedial measures and regulatory decisions based on historical data.

Strengths

• Covers over 32 monitoring sites, providing broad spatial coverage within the river basins.
• Contains data for 15 years or longer, enabling robust long-term trend analysis.
• Includes multiple variable types such as nutrients, metals, and major ions.
• Data is collected under a formal Canada-New Brunswick Water Quality Monitoring Agreement.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific modeling tasks.
• Data may reflect geographic bias inherent to the specific river basins monitored.

Provenance

Source

Environment and Climate Change Canada | Environnement et Changement climatique Canada

Collection Method

Long-term monitoring conducted through the Canada-New Brunswick Water Quality Monitoring Agreement.

Time Range

15 years or longer prior to the last update.

Freshness

Last updated 2026-05-07 19:31:48.562355; freshness should be verified.

Geography

Saint John River and St. Croix River basins in Canada.