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Isinglass Reservoir Fishing Report

Last Updated: November 12, 2025

Get the latest Fishing Report, Weather Forecast, and Hydrology for Isinglass Reservoir in Connecticut. Isinglass Reservoir is a popular fishing area located in Portland, Connecticut. Updated daily.


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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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