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Merrimack River

Water Quality Data - Individual Parameter for the the Lower Merrimack River

The data presented on this website is considered preliminary data and may be subject to future revision or qualifiers. The data for this site is transmitted directly from the instrument with no or little review. Inaccuracies may be presented due to instrument malfunction or physical changes at the monitoring site. Prior to water quality measurements, the water flows through a pump and a course filter which may slightly alter the measurements.