black fly
Pa. DEP will monitor 1,700 miles of nearly 50 waterways across the state, including the Delaware and Lehigh rivers through September.
Black fly spraying starts June 30 along the Lehigh and Delaware rivers.
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Pa. DEP will monitor 1,700 miles of nearly 50 waterways across the state, including the Delaware and Lehigh rivers through September.
Black fly spraying starts June 30 along the Lehigh and Delaware rivers.
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