The Candlewood Lake Authority is once again out on the water taking samples to measure different metrics, including water quality.  This is the 36th year for the collection activity at 4 locations on Candlewood and one on Squantz Pond.  They measure items like dissolved oxygen, temperature, and blue-green algae concentration, at each meter of depth all the way to the bottom.  The monthly activity is conducted from May through October and gives scientists an idea of how the lake is changing over time. The monitoring included a new addition last summer: monthly plant monitoring at boat launches to look for possible invasive species.