Chasm Lake Fishing in Boulder County, Colorado

• Overview

  Chasm Lake is set in Boulder County, Colorado. Around the bank it is lake country bush. Surface area runs to about 13 acres — small enough to read in one session. It sits higher than most water we list in Colorado. Estes Park sits 9.3 miles from the bank. Boulder is the closest city, 24 miles away. The nearest edge is a long way off, so local rules apply throughout.

• Where to Fish on Chasm Lake

  No published figure covers depth, so learn it as you fish. The productive water is a rod length or two out, not a hundred. A soft bed grows weed late into autumn, which keeps fish shallow. Survey and observation records for Boulder County include black-spotted cutthroat trout, brook trout and brown trout. County records show the wider picture rather than this one place. Fish Chasm Lake where the bottom changes rather than where it looks deep.

• Seasonal Patterns

  Average temperature peaks around 52°F in July and bottoms out near 19°F in February. The season turns properly here, and fish follow it closely. Ice fishing carries the winter, and the water opens about late May. Averages suggest open water from about late May through to roughly early November. Fishing peaks soon after break-up and again before the cold returns. Keep it in mind when planning a trip to Chasm Lake.

• Tackle & Baits

  No public source sets out the position on this bank. Overnight stays are possible half a mile away. A toilet block sits half a mile away. Light line and small metal for the trout; a fly rod earns its place on calm evenings. Local rules can differ across the county line, so check where you stand. Some ground is open by custom rather than by right, so tread carefully. If the gate is shut, Peacock Pool at 0.5 miles is the nearest alternative. Check the position on Chasm Lake before loading the car.