GRCA Monthly Water Quality Monitoring

Surface water quality has been monitored intensively across the GRCA since 2002; however, some water quality stations have been monitored since the 1960s and 1970s through the Provincial Water Quality Monitoring Network (PWQMN). Over the past decade, the following programs have been implemented by the GRCA either independently or in partnership with other agencies: (A) PWQMN – evaluation and trending background surface water quality to understand general location and cause of water quality problems. (B) High Water Event Monitoring – evaluation of surface water quality related to high flows caused by rainfall or snowmelt. (C) Ganaraska Region Water Quality Monitoring Network - evaluation and trending background surface water quality to understand general location and cause of water quality problems throughout a watershed. (D) Baseflow Water Quality Monitoring - evaluation of background surface water quality to understand general location and cause of water quality problems during baseflow conditions. (E) Chloride Monitoring - Evaluation and trending background chloride concentrations to understand general location and concentrations of chloride through the GRCA.