Summary
The reservoir supports a variety of fish species including rainbow trout, largemouth bass, bluegill, crappie, and channel catfish. Nearby activities include kayaking, paddleboarding, and hiking. Fishing tips include using live bait and fishing near the drop-offs. The best time to visit is in the spring and fall when the weather is mild and the fish are active. Average temperatures in the spring are around 60°F (15°C) and in the fall around 70°F (21°C).
St. Vrain State Park (Barbour Ponds)
Mead Ponds
Loomiller Park Pond
Izaak Walton Pond
Cattail Pond at Boulder County Fairgrounds
Weather Forecast
Nearby Streamflow Levels
Angling Safety Guidelines
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.
Related Links
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Union Reservoir
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St. Vrain State Park
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Boulder County Fairground
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Union
Rothrock Dell Park
Clark Centennial Park
Spangler Park
Lanyon Park
Collyer Park