Ashton Reservoir Fishing Report

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Last Updated: December 5, 2025

Ashton Reservoir in Idaho, USA is a great fishing destination with plenty of fish species available to catch.


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Summary

The most prevalent fish species in the reservoir include rainbow trout, cutthroat trout, and brook trout. The nearby area offers a variety of activities such as camping, hiking, and bird watching.

Fishing tips for Ashton Reservoir include using flies or lures that mimic small baitfish or insects. Anglers should also focus on fishing in deeper water during the hot summer months when the fish tend to move to cooler waters. The best time to visit Ashton Reservoir for fishing is during the spring and fall when the water temperatures are cooler and the fish are more active.

The average temperatures during the spring and fall months at Ashton Reservoir range from the mid-40s to the mid-60s. This is the perfect time to enjoy fishing and other outdoor activities in the area.

In summary, Ashton Reservoir in Idaho is a great fishing destination with a variety of fish species available. The nearby area offers plenty of activities and the best time to visit for fishing is during the spring and fall months when the temperatures are cooler and the fish are more active. Don't forget to bring your fly or lure that mimics small baitfish or insects for the best chance of catching a fish.

       

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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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