Isinglass Reservoir Fishing Report

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Last Updated: December 5, 2025

Isinglass Reservoir is a popular fishing area located in Portland, Connecticut.


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Summary

The reservoir is stocked with trout, including brown and rainbow trout, making it a great spot for anglers. Nearby activities include hiking and picnicking at the Meshomasic State Forest. When fishing at Isinglass Reservoir, it's best to use small lures and flies. The best time of year to visit is from April to June when the water temperature is between 50 and 65 degrees Fahrenheit. The average temperature during this time is around 60 degrees Fahrenheit.

       

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Angling Safety Guidelines

Know the Regulations
Check local fishing rules, seasons, size limits, and license requirements to ensure legal and sustainable angling.
Handle Fish Responsibly
Use wet hands, minimize air exposure, and release fish gently to improve survival rates when practicing catch-and-release.
Choose the Right Gear
Match your rod, line, and tackle to the species and conditions to increase success and reduce unnecessary harm to fish.
Respect the Waterway
Avoid disturbing habitat, prevent bank erosion, and keep a safe distance from spawning areas to protect ecosystems.
Keep It Clean
Pack out all line, hooks, bait containers, and trash—discarded gear can injure wildlife and degrade waterways.

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