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The GRCA operates automated water quality stations across the watershed to measure water temperature, pH level, dissolved oxygen and conductivity.
The information from these stations is relayed back to the GRCA head office where it is uploaded to our website every hour, usually about 20 minutes after the hour.
This information provides an overview of current water quality conditions which is helpful to staff at the GRCA, municipalities and other agencies. The information is also useful in studying long-term water quality changes.
