Castle Rock Fishing Report

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Last Updated: December 4, 2025

Castle Rock Fishing Access Site near Colstrip, Montana, offers quality angling on the Tongue River Reservoir.


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Summary

Best fishing spots include the dam area, coves near the state park, and the river inlets. Shore access is available at designated points, but boat access via the main ramp near the campground opens up more hotspots. Species include smallmouth bass, northern pike, walleye, crappie, and catfish. Spring and fall are prime seasons. Use jigs, crankbaits, and live minnows for bass and walleye; spoons or large swimbaits for pike. The reservoir’s warm waters support strong summer fishing, especially early morning or evening.

       

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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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