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U.S. Department of Energy
Office of Scientific and Technical Information

Acidity status of lakes in the Adirondack region of New York in relation to fish resources

Technical Report ·
OSTI ID:5891484
Many surface waters in the Adirondack region of New York State have low alkalinities due to a carbonate-poor geology. This condition makes these waters particularly sensitive to the high acid ion deposition associated with the region's airshed. Since 1975, pH and alkalinity measurements have been made on 849 ponded waters throughout the Adirondack region to determine the scope of water quality impacts associated with acid ion deposition and to provide a baseline inventory for indexing future measurements. The present condition of surface waters is described on the basis of summertime, one meter depth, pH measurements obtained with a pH meter under air-CO/sub 2/-equilibrium conditions. Twenty-five percent of the waters in the survey registered pH readings below 5.0. These waters comprise 10,460 surface acres. Comparisons of historic and post-1974 acidities are made where data points from comparable methodologies exist. Relationships between meter pH, colorimetric pH, alkalinity, conductivity, calcium, lake surface area, lake surface elevation and geographical locations are discussed. Changes in fish species composition and sportfishing yields observed in waters exhibiting increased acidity are reviewed.
Research Organization:
New York State Dept. of Environmental Conservation, Albany (USA). Div. of Fish and Wildlife
OSTI ID:
5891484
Report Number(s):
NP-2901528; FW-P-168-10-80
Country of Publication:
United States
Language:
English