The New York State Department of Environmental Conservation (DEC), together with the New York State Department of Health (DOH) and officials from Cattaraugus County, is investigating a potential discharge of organic waste into Ischua Creek in Franklinville. This incident has led to a significant die-off among fish and other wildlife species.
“DEC is working with State and local partners to lead a comprehensive investigation into the die-off of multiple species in Ischua Creek and any other potential environmental impacts,” said DEC Commissioner Amanda Lefton. “We are advising the public not to fish or recreate in the affected area while DEC takes all actions necessary to ensure protection of public health and the environment.”
“The Department of Health is closely coordinating with DEC and local partners to monitor this potential discharge in Ischua Creek,” said State Health Commissioner Dr. James McDonald. “While there has been a serious impact to fish and wildlife, at this time there is no indication of any effect on public drinking water supplies. We will continue to monitor these developments and provide guidance when more information is available as protecting the health of New Yorkers remains our top priority.”
DEC received reports on August 26, 2025, about a large number of dead fish in Ischua Creek at Franklinville. Field teams from DEC responded immediately, monitored water quality downstream, and assessed effects on aquatic life. Staff found several types of dead aquatic animals in the area.
Currently, authorities have not found evidence that public drinking water supplies are affected. Local water systems have been informed and are conducting precautionary monitoring. Agencies are also evaluating if private wells downstream could be impacted.
Officials advise people to avoid contact with Ischua Creek downstream from Franklinville until further notice. Recreational activities such as fishing, boating, swimming, or consuming fish from the creek should be suspended for now.
The public can report unusual observations regarding fish or wildlife to DEC Region 9 Fisheries via fwfish9@dec.ny.gov. People should avoid handling dead animals directly; instead use protective gear such as disposable gloves, masks, eye protection, shovels for removal if necessary, and wash hands and clothing thoroughly after contact. More information about animal health can be found at https://dec.ny.gov/nature/wildlife-health/animal-diseases.
DEC will oversee any corrective actions needed as part of its ongoing investigation into the cause of the incident.
