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Caddisflies signal healthy stream in Pennsylvania
September 22, 2026
A caddisfly observation (, fixed-retreat makers) was recorded on September 15, 2026, in Pennsylvania. Caddisflies are sensitive to pollution and require cool, oxygenated water, making their presence an indicator of good stream health.
Stream mayflies found near Tyrone Township
September 22, 2026
(Heptageniidae) were observed on September 19, 2026, near Tyrone Township. Their presence indicates clean, well-oxygenated flowing water, as mayfly nymphs require unpolluted conditions and high dissolved oxygen to complete their development.
Glendale Lake listed as impaired
September 22, 2026
Glendale Lake is listed as impaired on the EPA 303(d) list as of the 2026 assessment cycle. This designation indicates the lake does not support all of its designated water uses and requires a total maximum daily load cleanup plan.
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