What Blue Mesa Reservoir Offers

Blue Mesa Reservoir is Colorado's largest body of water and sits in the high country of the Uncompahgre National Forest near Gunnison, about 200 miles southwest of Denver. The lake holds kokanee salmon, lake trout, rainbow trout, and brown trout, with kokanee the signature species here — they run thick in fall and draw anglers specifically for that season. The reservoir spans roughly 9,500 acres at full pool and reaches depths over 300 feet in places, making it a serious destination for both boat and shore fishing.

The setting is high elevation — around 7,500 feet — which means the water stays cold year-round and the fishing window is seasonal. Summer brings the most consistent action, but fall kokanee runs create a distinct fishery that doesn't exist everywhere. Winter access is limited by snow and ice conditions, and spring runoff can muddy the water and make boat handling difficult. The reservoir's size and depth mean you can fish it many different ways: trolling from a boat, casting from shore, jigging deep structure, or working the shallows in early season.

Key Takeaways

  • Blue Mesa holds kokanee salmon, lake trout, rainbow trout, and brown trout, with kokanee most abundant in September and October.
  • The reservoir sits at 7,500 feet elevation in the Uncompahgre National Forest, roughly 200 miles southwest of Denver near Gunnison.
  • Summer and fall are the primary fishing seasons; winter access is limited by snow and ice, and spring runoff often clouds the water.
  • A Colorado fishing license is required, and the reservoir has specific regulations for species, bag limits, and tackle that change by zone.
  • Three marinas provide boat rentals, fuel, and supplies: Elk Creek, Lake Fork, and Cimarron — each with different amenities and access points.

Seasons and When Fish Are Most Active

Summer, from June through August, is the busiest and most predictable time. Water temperatures climb into the 60s, and trout move to deeper water during the day but feed in shallower zones at dawn and dusk. Kokanee are present but scattered; they haven't yet concentrated for their fall spawn. Boat traffic is heaviest, and shore access at developed areas can be crowded on weekends.

Fall, September through mid-October, is when Blue Mesa becomes a kokanee destination. The fish move into shallower water to spawn, and their numbers become visible — you'll see them schooling and jumping. This is the window when anglers specifically target kokanee with small spoons, spinners, and jigs. Water temperatures drop into the 50s, and the crowds thin after Labor Day. By late October, the spawn winds down and the fish disperse again.

Winter fishing is possible but limited. The reservoir rarely freezes solid enough for safe ice fishing, and snow accumulation at the higher elevations can close access roads. Some shore fishing continues on the lower sections, but boat access becomes unreliable. Spring, April and May, sees runoff from snowmelt that discolors the water and makes fishing difficult; many anglers skip this period entirely.

Species, Regulations, and What to Bring

Colorado Parks and Wildlife divides Blue Mesa into different zones with separate regulations. The main body of the reservoir allows year-round fishing for lake trout, rainbow trout, and brown trout. Kokanee have a specific season — typically open year-round but with a daily bag limit that varies. Lake trout limits are usually higher than for rainbows and browns, reflecting their abundance. Check the current Colorado fishing regulations before you go; rules change and zone-specific rules apply to different arms of the reservoir.

You will need a valid Colorado fishing license. Non-residents can purchase a 5-day license or a full-year license through Colorado Parks and Wildlife. Tackle requirements depend on what you're targeting. For kokanee in fall, small spoons (size 1 to 3), spinners, and vertical jigs in silver or red work well. For lake trout, larger spoons, swimbaits, and jigging with live baitfish or tube jigs are standard. Shore anglers often use spinners and small crankbaits cast from rocky points and inlets.

Bring polarized sunglasses to read the water, a depth finder if you're boating, and layers — the elevation means mornings are cold even in summer. The sun reflects hard off the water, so sunscreen and a hat are essential. If you're boat fishing, bring a PFD (personal flotation device), which is required by law. The reservoir can develop afternoon wind, so plan to fish early and be off the water by mid-afternoon if conditions deteriorate.

Access Points and Marinas

Elk Creek Marina is the largest and most developed. It has a full-service marina with boat rentals, fuel, a restaurant, and lodging. The launch ramp is concrete and well-maintained, and the marina sits on the north arm of the reservoir where kokanee concentrate in fall. This is the most convenient option if you don't have your own boat, but it's also the busiest and most expensive.

Lake Fork Marina sits on the eastern arm and offers boat rentals, fuel, and a smaller store. The launch ramp is good, and this location is slightly less crowded than Elk Creek. It's a reasonable choice if you want to avoid the main marina traffic but still have full services.

Cimarron Marina is the smallest and most remote, located on the western arm. It has a launch ramp and basic supplies but no boat rentals or fuel. This is the best option if you have your own boat and want to fish quieter water, though you'll need to plan fuel and supplies ahead of time.

Shore access is available at several Forest Service campgrounds and day-use areas around the reservoir. Paved parking and walk-in access exist at Elk Creek Campground, Lake Fork Campground, and Cimarron Campground. These spots are free or charge a small day-use fee. The shoreline is rocky and steep in many places, so wading is limited, but casting from the bank works well in early morning and evening.

How to Get There and What to Know About the Drive

Blue Mesa Reservoir is accessed via US Highway 50, which runs between Gunnison and Montrose. From Gunnison, take US 50 west for about 30 miles; the reservoir begins to appear on your right. The drive is scenic but winding, and winter snow can close sections of the highway. Check Colorado Department of Transportation conditions before you leave, especially October through April.

The nearest towns with lodging and supplies are Gunnison (about 30 miles east) and Montrose (about 40 miles west). Gunnison has more options and is the larger hub. If you're coming from Denver, expect a 4- to 5-hour drive depending on traffic and weather. The elevation gain is significant — Denver sits at 5,280 feet, and Blue Mesa is at 7,500 feet — so allow time to acclimate if you're sensitive to altitude.

Cell service is spotty around the reservoir, so download maps and have a paper backup. Gas stations are in Gunnison and Montrose; the marinas sell fuel but at a premium. Groceries and tackle shops are in Gunnison. If you're planning a multi-day trip, book lodging in advance, especially during fall kokanee season when the area fills quickly.

Boat Fishing Versus Shore Fishing

Boat fishing gives you access to deeper water and structure where lake trout hold during the day. Trolling with spoons or swimbaits in 40 to 100 feet of water is productive year-round. Jigging vertically over deep structure — the reservoir has old creek channels and ridges that show on a depth finder — is effective for lake trout and can produce large fish. In fall, boating lets you follow kokanee schools as they move through different zones.

Shore fishing works best in early morning and evening when trout move into shallower water to feed. Rocky points, inlet areas, and the mouths of tributary creeks are good spots. Casting small spoons and spinners from shore can produce rainbow and brown trout, especially in spring and early summer. Shore fishing requires no boat rental and is free, but you're limited to the shallows and can't reach the deep structure where larger lake trout live.

Frequently Asked Questions

What's the best time to fish for kokanee at Blue Mesa?

September and October are peak kokanee season. The fish move into shallower water to spawn, become visible, and are most aggressive. Early September offers the most fish; by late October the spawn winds down. Summer kokanee are present but scattered and harder to locate.

Do I need a boat to fish Blue Mesa, or can I fish from shore?

Shore fishing is possible and productive, especially in early morning and evening at rocky points and inlet areas. You'll catch rainbow and brown trout from the bank. A boat gives you access to deeper water and larger lake trout, but it's not required. Boat rentals are available at Elk Creek and Lake Fork marinas if you want to try both.

What size fish can I expect to catch?

Lake trout average 12 to 18 inches, with fish over 20 inches possible. Rainbow and brown trout average 10 to 14 inches. Kokanee average 10 to 12 inches. The reservoir's size and depth support healthy populations, but don't expect trophy fish — it's a numbers fishery more than a trophy fishery.

Is the water cold enough to require a wetsuit?

The water stays cold year-round due to elevation and depth. In summer it reaches the low 60s; in fall it drops to the 50s. If you plan to wade or swim, a wetsuit is wise. Most anglers fish from boats or shore and don't enter the water.

Can I fish Blue Mesa in winter?

Winter fishing is limited. The reservoir rarely freezes solid enough for safe ice fishing, and snow can close access roads. Some shore fishing continues on lower sections, but boat access becomes unreliable. Spring runoff (April and May) also makes fishing difficult. Summer and fall are the reliable seasons.