Fish Consumption Advisories Lifted for Pymatuning Reservoir, Tamarack Lake in Crawford County PA
Fish tissue samples tested by the Fish and Boat Commission and Cornell University determined the large fish kills in both lakes were the result of a Columnaris outbreak. Columnaris is a naturally occurring bacterium that was triggered by several stressors, including rapidly warming waters during the spawning season.
The commonwealth's Interagency Fish Consumption Advisory Technical Workgroup verified the findings.
DEP also tested water quality and fish tissue samples. The preliminary results show no contaminants of concern for persons who consume fish from the lakes or for downstream water supplies.