2016 Water Quality Report Card Issued

TRWA issued its 2016 Water Quality Report Card. TRWA monitors 19 locations along the Taunton River and its tributaries. A major concern for the watershed is nutrient pollution from nitrogen. Nitrogen levels in the main stem are often 2-5 times recommended levels and much higher in tributary streams. High nutrient levels fuel algae and rooted aquatic plant blooms limiting biodiversity in the watershed. Currently about 66% of the nitrogen load comes from wastewater treatment plants which are being required to upgrade to remove excessive nitrogen loads from their discharges over the next five years.

Adult Sea Lamprey Sighting on the Nemasket

This past May, a dead adult sea lamprey was observed at Oliver Mill Park in Middleborough. The fish had migrated up the river to spawn on the Nemasket and having completed its life cycle, died and was washed up on the banks. It was 30” long.

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There are two lamprey species native to Massachusetts waters, the American Brook Lampry (Lethenteron appendix) (which is a threatened population in the state) and the Sea Lamprey (Petromyzon marinus).

The fellow found … Continue reading

Diamondback Terrapin Study

terrapin_study_02The TRWA is pleased to announce it will be funding a technician to formally investigate the Diamondback Terrapin (Malaclemy terrapin) population of Assonet Bay located in Southern Massachusetts. This population and its nesting beach have been documented for several years, but no rigorous studies have been conducted to determine and record the abundance, sex ratio, or age structure of this population. Such a study would provide crucial information for conservation and management of this, and other populations of … Continue reading

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