What Conconully Reservoir offers anglers

Conconully Reservoir sits in the high desert of north-central Washington, about 30 miles northwest of Okanogan town. It's a shallow, weedy impoundment that holds warmwater species year-round and produces solid catches of largemouth bass, smallmouth bass, and crappie. The water warms quickly in spring and stays fishable into late fall, making it one of the more forgiving reservoirs in the region if you're new to desert fishing.

The reservoir covers roughly 1,000 acres when full, though water levels drop noticeably by late summer. That fluctuation matters: the shallower edges and weed beds that hold fish in June can be harder to reach by August. Anglers who time their visits to spring and early summer, or who know how to work the deeper channels when levels drop, catch the most fish.

What sets Conconully apart from larger Okanogan reservoirs is its accessibility and lack of crowds. You won't find the boat traffic of Banks Lake or the trophy-hunting pressure of the Columbia River system. That trade-off means smaller average fish but more consistent action and a genuine chance to explore without fighting for water.

Key Takeaways

  • Conconully Reservoir holds largemouth bass, smallmouth bass, and crappie in shallow, weedy water that warms quickly in spring.
  • Water levels drop significantly by late summer, so spring and early summer produce the most reliable fishing.
  • The main boat launch is at Conconully State Park on the west shore, with day-use parking and a paved ramp.
  • Weed beds and shallow structure hold most fish; work the edges where weeds meet open water rather than casting into dense vegetation.
  • Largemouth bass run 12 to 16 inches on average, with occasional fish to 18 inches; crappie average 8 to 10 inches.

When to fish Conconully and what to expect by season

Spring (April through May) is the most productive window. Water temperatures climb from the 50s into the 60s, and bass move shallow to spawn. Largemouths push into the weed beds and shoreline brush; smallmouths work the rocky points and transitions between shallow and deeper water. Crappie spawn in the same period and school predictably in 6 to 12 feet of water near structure. Expect steady action and the year's largest fish.

Early summer (June through mid-July) remains excellent. Water temperatures reach the upper 60s and low 70s. Bass are still active in the shallows, though they begin moving to slightly deeper weed edges as the day warms. Crappie fishing slows as fish scatter after spawning, but largemouths and smallmouths remain catchable throughout the day. This is the window for topwater lures and sight-fishing in clear water.

Late summer (mid-July through August) gets tougher. Water temperatures exceed 75 degrees, and fish move deeper or suspend in the thickest weed cover. The reservoir level drops noticeably, concentrating fish but also shrinking the fishable area. Early morning and late evening produce better results than midday. Many anglers shift to night fishing or focus on the deeper channels where smallmouths hold.

Fall (September through October) brings a second-best window. Cooling water temperatures push fish back into the shallows, and the weed beds thin as plants die back. Bass feed aggressively in preparation for winter. Water levels continue to drop, so navigation requires attention to shallow spots, but fishing can be excellent for anglers who know the reservoir's layout.

How to reach Conconully and where to launch

From Okanogan town, take Highway 97 north about 15 miles to the town of Okanogan (yes, the county and town share a name). Turn west on Highway 20 toward Concrete, then north on Conconully Road. The drive from Okanogan town to the reservoir takes roughly 45 minutes. The road is paved and well-maintained year-round.

Conconully State Park operates the main public boat launch on the west shore. The ramp is paved, two lanes wide, and suitable for trailers up to about 24 feet. There is a day-use fee (typically $10 to $15, though rates vary by season). The park has vault toilets, a small parking area, and a picnic area but no fuel or supplies. Arrive early on weekends; the lot fills by mid-morning on good weather days.

A secondary launch exists at the north end of the reservoir near the town of Conconully, but it is rougher and less reliable, especially when water levels drop. Stick with the state park launch unless you have a small, lightweight boat.

What tackle and techniques work best

Largemouth bass respond well to soft plastics worked slowly through weed beds: 4-inch crawfish imitations, 5-inch ribbontail worms, and creature baits in brown, green, and black. Cast to the weed edges and work the lure slowly, pausing frequently. A 1/4-ounce Texas rig or wacky-rigged worm works in 4 to 8 feet of water. In spring, topwater plugs and buzzbaits produce strikes in the shallows during low-light periods.

Smallmouth bass prefer harder structure and slightly deeper water than largemouths. Tube jigs (2 to 3 inches) in brown and green, small crankbaits, and drop-shot rigs with 3-inch minnow imitations all produce. Fish the rocky points, the transitions between shallow flats and deeper channels, and the edges of the main basin. Smallmouths bite throughout the day but are most aggressive in early morning and late evening.

Crappie fishing is straightforward: use a small jig (1/16 to 1/8 ounce) tipped with a minnow or fished with a small soft plastic body. Fish vertically or cast to structure in 6 to 15 feet of water. During the spawn (April and May), crappie school densely and bite aggressively. Later in the year, they scatter, and you'll catch them as incidental fish while targeting bass.

Spinning tackle in the 5.5- to 6.5-foot range with 6- to 10-pound monofilament or braided line works for all three species. A baitcasting setup is not necessary but is useful if you plan to throw heavier lures or fish deeper water. Bring polarized sunglasses; the water clarity is good enough to sight-fish in spring, and spotting weed beds and structure saves time.

Understanding the water and where fish hold

Conconully is a classic shallow-water reservoir. The average depth is around 20 feet, and the deepest basin reaches perhaps 40 feet. Most of the productive water is 4 to 15 feet deep. Weed beds dominate the structure; they grow densely in spring and early summer, then thin as water warms and levels drop. The west shore (where the state park sits) is shallower and weedier. The east shore has more rocky points and slightly deeper water.

Fish the weed edges rather than casting into dense vegetation. The transition zone where weeds meet open water is where bass hunt. In spring, work the shallow flats in 2 to 6 feet of water. As summer progresses, move to the edges of deeper weed beds in 8 to 12 feet. The main basin channel (the old river channel that runs through the center of the reservoir) holds smallmouths and deeper-holding largemouths, especially in late summer.

Crappie school in slightly deeper water than bass, typically 8 to 15 feet, near submerged brush or the edges of weed beds. They are most predictable during the spawn; after that, they scatter and are harder to locate. Fish structure methodically and mark productive spots with your GPS.

Regulations and what you need to know before you go

Washington State requires a valid fishing license for anyone 16 and older. You can purchase a one-day, three-day, or annual license online through the Washington Department of Fish and Wildlife (WDFW) website or at most sporting goods stores in Okanogan. The cost varies by license type.

Conconully Reservoir follows standard Washington warmwater rules. Bass have a year-round season with a daily limit of five fish (combined largemouth and smallmouth). Crappie have a year-round season with a 25-fish daily limit. Check the current WDFW pamphlet for any emergency closures or rule changes; regulations can shift seasonally or in response to water conditions.

The reservoir is open to boats, but there is no horsepower limit. Most anglers use 15- to 25-horsepower outboards or trolling motors. Gas is not available at the reservoir, so fill up in Okanogan town before you drive out. The nearest services (food, lodging, supplies) are in Okanogan, about 45 minutes away.

Lodging and services near Conconully

Conconully State Park has a campground with roughly 80 sites, most with water and electrical hookups. Sites fill quickly on weekends in summer, so reserve ahead through the Washington State Parks system. The campground is open year-round, though some facilities close in winter.

Okanogan town, 45 minutes south, has motels, restaurants, and a grocery store. It's the practical base if you want lodging with more amenities than camping. The town is small but has what you need for a fishing trip: fuel, food, and tackle shops. Omak, another 15 miles south, is slightly larger and has more dining options.

If you're planning a multi-day trip, camping at Conconully State Park is the most economical and puts you on the water at first light. Day trips from Okanogan are also practical; the drive is short enough that you can launch by mid-morning and fish until evening.

Frequently Asked Questions

Can I fish Conconully in winter?

Yes, the reservoir is open year-round, but winter fishing is slow. Water temperatures drop into the 40s, and fish move deep and feed infrequently. Most anglers avoid winter; spring and early summer are far more productive. If you do fish in winter, focus on the deepest basins and fish slowly.

What's the difference between largemouth and smallmouth bass at Conconully?

Largemouths dominate the shallow weed beds and shoreline structure; smallmouths prefer rocky points and deeper transitions. Largemouths average 12 to 16 inches; smallmouths run slightly smaller but are more aggressive fighters. Both are present year-round, but largemouths are easier to locate in spring and early summer.

Is the water safe to drink or swim in?

No. Treat any water from the reservoir as potentially contaminated. Bring drinking water from town. Swimming is not prohibited, but the water is cold year-round and the shoreline is often muddy. Most visitors do not swim.

What should I do if I get stuck on a shallow spot?

Water levels drop significantly by late summer, and shallow areas that were navigable in June may be impassable by August. Tilt your motor up, use a push pole or trolling motor to back off, or wait for another boat to tow you. Carry a push pole or oars if you have a small boat. Study the main channel before you launch, and avoid exploring shallow bays unless you're confident in your boat's draft.

Are there any fish species I should avoid or report?

No invasive species have been documented at Conconully, but report any unusual fish to the WDFW. The reservoir is managed to maintain healthy populations of bass and crappie, so follow catch-and-release practices if you're not keeping fish for dinner.