Keystone Lake, Reservoir and protected area in Armstrong County, Pennsylvania.
Keystone Lake is a reservoir in Armstrong County sitting at about 1,076 feet elevation, ringed by natural parkland and open shorelines. The water body provides space for fishing, boating, and wildlife watching along its banks.
The reservoir was developed as a water body for the region, and management agencies introduced regular fish stocking to support fishing opportunities. These practices shaped how the lake functions ecologically today.
Environmental education programs from March to November teach visitors about local ecosystems and natural resource management at Keystone Lake.
Visitors can use the water with registered boats limited to manual or electric motors. Designated areas support fishing and wildlife watching, letting visitors plan their time based on what interests them.
Local researchers conduct ecological studies at Keystone Lake to analyze aquatic ecosystems and monitor water management patterns.
Location: Armstrong County
GPS coordinates: 40.75056,-79.28590
Latest update: December 14, 2025 14:25
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