What to expect at Twin Lakes Reservoir

Twin Lakes Reservoir sits at 10,200 feet in the Sawatch Range near Leadville, Colorado, making it one of the state's highest reservoirs and a destination for anglers willing to fish alpine water. The lake holds cutthroat trout, lake trout, and brook trout, with cutthroats the most common catch. Water temperature stays cold year-round, which keeps fish active even in summer, but the season is short — ice-out typically happens in late May or early June, and the lake freezes again by November.

Access is straightforward: Colorado Parks and Wildlife maintains a boat ramp and parking area on the north shore, and the drive from Leadville takes about 20 minutes on paved road. The reservoir spans roughly 2,000 acres, so you can fish from shore or boat, though the steep terrain around much of the shoreline makes boat access more practical for reaching productive water. Afternoon winds are common at this elevation, so morning trips are generally calmer and safer.

Key Takeaways

  • Twin Lakes holds cutthroat, lake trout, and brook trout, with cutthroats most abundant and typically ranging 10 to 14 inches.
  • The fishing season runs from late May through October, with peak conditions in June and September when water temperatures are coolest.
  • A Colorado Parks and Wildlife boat ramp and parking area on the north shore provide the main public access point.
  • You will need a valid Colorado fishing license and must follow state regulations, including a daily limit of 10 trout per day.
  • Afternoon winds are predictable at this elevation, so plan to fish early morning or bring a boat capable of handling chop.

Seasons and water conditions

Twin Lakes opens to fishing when the ice goes out, usually between late May and early June depending on snowpack. June and early July offer the best conditions because water temperatures are in the 50s, cutthroats are active in shallow water, and the lake is less crowded than midsummer. By August, surface water warms to the low 60s, and fish move deeper or into cooler inlets, making midday fishing slower.

September and October bring the second-best window: water cools again, fish return to shallower zones, and the alpine weather is often clearer than summer. The lake typically freezes by early November, though ice-out dates shift with winter snowfall. Winter ice fishing is possible but requires checking current conditions with Colorado Parks and Wildlife — ice thickness and safety vary year to year.

Species and what they eat

Cutthroat trout dominate Twin Lakes and average 10 to 14 inches, with occasional fish reaching 16 inches. They feed on small aquatic insects, zooplankton, and small fish, making them responsive to small spinners, spoons, and nymphs. Lake trout are present but less common in angler catches; they prefer deeper water and respond to jigging or trolling with larger lures. Brook trout round out the mix and are typically smaller, 8 to 11 inches, but abundant in shallow areas.

Fly fishing works well for cutthroats in the shallows during early morning and evening. Small nymphs — size 14 to 18 — and dry flies during sparse insect hatches produce steady catches. Spin anglers do well with 1/8-ounce spoons in silver or gold and small spinners cast toward structure or drop-offs. The lake has limited weed growth due to its depth and cold water, so fish relate more to depth changes and inlet areas than to vegetation.

Access and facilities

The main public access is the Colorado Parks and Wildlife boat ramp and parking area on the north shore, reached via Forest Road 104 from Leadville. The ramp is paved and can accommodate trailers, with parking for roughly 20 vehicles. There is no developed campground at the lake itself, but the surrounding national forest has several dispersed camping areas within a few miles, and private campgrounds operate near Leadville.

Facilities at the lake are minimal — no restrooms, no fuel, and no services. Bring water and supplies from Leadville, which is 20 minutes away and has grocery stores, gas, and restaurants. The road to the lake is paved but narrow in places, and winter snow can close access from November through May depending on conditions. Check with the Leadville Ranger District before heading up in shoulder seasons.

Regulations and licensing

Colorado Parks and Wildlife sets the rules for Twin Lakes. You must have a valid Colorado fishing license, available online or at sporting goods retailers in Leadville. The daily limit is 10 trout of any species combined, with no minimum size restriction. Possession limit is the same as daily limit — you cannot keep more than 10 trout total at any time.

Bait fishing is allowed, but live baitfish are prohibited — use only dead baitfish or artificial lures. Flies and spinners are unrestricted. Motorized boats are permitted, and there is no horsepower limit, though the lake is small enough that trolling covers water efficiently. Check the current Colorado Parks and Wildlife fishing brochure before your trip, as regulations can change year to year.

Gear and tactics for high-altitude water

Bring lighter tackle than you would for lowland reservoirs. Cutthroats in cold water are aggressive but not large, so 4- to 6-pound test is adequate for spin fishing, and a 4-weight fly rod handles the conditions well. Small spoons (1/8 to 1/4 ounce) and spinners (size 1 to 2) cast easily and cover water fast, which is useful when you are fishing from shore and cannot reach deep structure.

Early morning is critical at Twin Lakes because afternoon winds build predictably. If you are fishing from shore, plan to be on the water by sunrise and leave by early afternoon. If you have a boat, morning trips to the inlet areas — where creeks feed the lake — often produce the best cutthroat fishing. Bring layers and wind protection; weather at 10,200 feet changes quickly, and afternoon temperatures can drop 20 degrees in an hour.

When to avoid Twin Lakes

Avoid the lake during heavy snowmelt, typically late May through early June, when runoff clouds the water and fish are less active. Midsummer (mid-July through mid-August) brings the most crowds and warmest water, making early morning and evening the only reliable fishing windows. Winter access is uncertain — the road can be impassable, and ice conditions vary, so call ahead before attempting a winter trip.

The lake is also less productive during drought years when water levels drop significantly. Low water concentrates fish but also reduces the area you can fish effectively from shore, and the boat ramp may become difficult to use. Check current conditions with Colorado Parks and Wildlife or the Leadville Ranger District before planning a trip in late summer or fall.

Frequently Asked Questions

Do I need a boat to fish Twin Lakes?

No, but a boat reaches more productive water. Shore fishing works from the north shore near the ramp and from a few accessible points around the lake, but the steep terrain limits options. Cutthroats are catchable from shore in early season and during cool mornings, so a boat is helpful but not required.

What is the best time of day to fish?

Early morning, from sunrise to mid-morning, is most productive. Afternoon winds build reliably, and fish move deeper as the day warms. If you can only fish midday, focus on deeper water or inlet areas where cooler water holds fish.

Can I fish Twin Lakes in winter?

Ice fishing is possible but depends on ice thickness and road access. The road to the lake often closes in winter, and ice conditions vary year to year. Contact Colorado Parks and Wildlife or the Leadville Ranger District to confirm access and safety before attempting a winter trip.

What size fish should I expect?

Cutthroats average 10 to 14 inches, with occasional fish to 16 inches. Lake trout are larger but less common in catches. Brook trout typically run 8 to 11 inches. The cold water keeps fish healthy but limits growth compared to warmer reservoirs.

Is there camping at Twin Lakes?

No developed campground sits at the lake, but dispersed camping is available in the surrounding national forest within a few miles. Private campgrounds operate near Leadville, 20 minutes away. Bring water and supplies, as no services exist at the lake itself.