Using long-term and seasonal data to characterize nutrient balances in Duane Lake, NY

Abstract

Duane Lake is a private, artificial lake located in Schenectady County, NY and is classified as a class B lake. The lake is 120 acres, draining a 547-acre watershed composed primarily of pasture and hay fields, open water, and developed land. The lake is mainly used for fishing and for aesthetic purposes. To address concerns about harmful algal blooms, aquatic plants, and nutrients in the lake, we compiled and analyzed historical data from the lake and watershed, collected and analyzed limnological profile data, created a bathymetric map for surface area and volumetrics, and developed a preliminary nutrient budget for the lake. Long-term and seasonal limnological parameters were analyzed to determine mixing regimes, potential from internal loading due to anoxia during summer months, and long-term changes in water quality parameters. Results were used to parameterize a lake loading response model and identify potential sources of nutrients in the lake. The results of this work will provide the Duane Lake Association with much of the information needed to create a 9-Element watershed management plan and will assist with management and decision making moving forward.