What You'll Find at Big Creek Reservoirs
Big Creek Reservoirs in Oregon's Wallowa County hold rainbow trout, brook trout, and kokanee salmon, depending on which reservoir you visit. The system includes Big Creek Lake, Mirror Lake, and several smaller impoundments scattered across the Wallowa-Whitman National Forest. Water levels and fish populations shift with the season and recent stocking, so conditions in June look different from August.
Access is straightforward for most of the year — the main reservoirs sit on maintained forest roads, and parking areas are marked. The elevation ranges from 4,500 to 6,000 feet, which means snow closes some access roads from November through April. Summer is the reliable season; spring and fall fishing is possible but depends on when the Forest Service opens the roads.
Key Takeaways
- Big Creek Lake and Mirror Lake are the primary destinations, both stocked with rainbow and brook trout, with kokanee present in the larger reservoir.
- Access roads close seasonally due to snow; call the Wallowa Valley Ranger District before visiting between October and May to confirm conditions.
- Oregon fishing licenses are required, and the daily limit is five trout per person at most Big Creek waters.
- Boat ramps exist at Big Creek Lake, but Mirror Lake and smaller ponds are better suited to shore fishing or float tubes.
- No motorized boats are allowed on Mirror Lake; Big Creek Lake permits electric motors only.
Big Creek Lake — The Larger Reservoir
Big Creek Lake is the largest water in the system and the one most anglers head to first. It covers roughly 50 acres when full and holds rainbow trout, brook trout, and kokanee. The lake sits at 5,050 feet elevation and is accessible via Forest Road 3960, which branches off Highway 82 near Enterprise. The road is typically open from late May through October, though timing varies by year.
A boat ramp and day-use parking area sit on the north shore. Electric motors are permitted, but gas engines are not. Shore fishing is productive along the eastern and western banks, where willows and submerged timber give trout cover. Trolling with small spinners or spoons works well from a boat or float tube, especially in early summer when kokanee move into shallower water. By mid-July, fish often retreat to deeper water, and shore anglers do better near the dam or in the inlet creek.
The campground at Big Creek Lake has 28 sites and fills quickly on weekends in July and August. Reservations are not taken; it operates on a first-come basis. Water and vault toilets are available, but there is no electricity or dump station.
Mirror Lake — No Motors, Better for Quiet Water
Mirror Lake sits about 3 miles south of Big Creek Lake at 5,400 feet and is smaller — roughly 20 acres — but often less crowded. The defining rule is that no motorized boats are allowed, which keeps the water quiet and makes it popular with fly anglers and float-tube fishers. Rainbow and brook trout are the primary species.
Access is via Forest Road 3960, then Forest Road 3950. The parking area is small, with room for about a dozen vehicles. A short trail leads to the water's edge. Shore fishing is possible but limited; most anglers bring float tubes or small rafts. Fly fishing with small nymphs and dry flies works well, especially in the early morning and late evening. Spin anglers do well with small spinners cast near the inlet.
There is no developed campground at Mirror Lake, but dispersed camping is allowed on nearby forest land. Bring water and pack out all waste. The lake is quieter and less developed than Big Creek Lake, which appeals to anglers seeking solitude.
Seasons, Road Conditions, and When to Fish
Late May through September is the main season. Roads open as snow melts, usually by late May, and close again when winter weather arrives in October or November. The Wallowa Valley Ranger District maintains these roads, and conditions can change quickly. Before driving out, call the ranger district at 541-426-5546 to confirm that Forest Road 3960 is passable.
Early summer (June and early July) is when stocking is most recent and fish are actively feeding in shallower water. Water temperatures are cool, and both shore and boat anglers see good results. By mid-July, afternoon heat pushes fish deeper, and early morning and evening fishing becomes more productive. Fall (September and early October) can be excellent before roads close, with fewer anglers and active fish preparing for winter.
Spring and fall weather is unpredictable. Afternoon thunderstorms are common in July and August. Bring rain gear and be prepared to leave the water if lightning threatens. Mosquitoes peak in June and early July; insect repellent is essential.
Regulations, Licenses, and What You Can Keep
An Oregon fishing license is required for anyone 12 and older. Licenses are sold online at oregonfishes.org, at sporting goods stores in Enterprise and Joseph, and at some gas stations. A one-day license costs less than a full-year license if you are visiting briefly.
The daily limit at Big Creek Lake and Mirror Lake is five trout per person. Brook trout and rainbow trout count toward the same limit. Kokanee, where present, have a separate limit of 10 per day. There are no size restrictions on trout at these reservoirs, so fish of any legal size count toward your limit. Catch-and-release is always an option if you want to fish longer without keeping your limit.
Bait fishing is allowed. Live bait, dead bait, and prepared dough are all legal. Artificial lures and flies are also permitted. Check the current Oregon Sport Fishing Regulations before you go, as rules can change year to year.
What to Bring and How to Get There
From Enterprise, take Highway 82 south toward Joseph. About 8 miles south of Enterprise, turn east on Forest Road 3960 (the turnoff is marked). Follow this road for roughly 12 miles to reach Big Creek Lake. Mirror Lake is an additional 3 miles on Forest Road 3950. The drive takes 30 to 45 minutes from Enterprise depending on road conditions.
Bring a valid Oregon fishing license, a rod and reel or fly rod, tackle suited to small trout (spinners, spoons, nymphs, or dry flies), and a net if you plan to keep fish. Sunscreen, a hat, and insect repellent are essential. If you are bringing a boat or float tube, check that it is in good condition — there are no rental services at these reservoirs. A cooler with ice is useful for keeping fish fresh if you plan to keep your limit.
Cell service is unreliable in this area. Bring a map or download offline maps before you leave town. The nearest gas station and supplies are in Enterprise, so fill up before heading out.
Frequently Asked Questions
Can I fish Big Creek Reservoirs in winter?
Access roads typically close by November due to snow and do not reopen until late May. Even if you could reach the water, ice fishing is not common here, and most anglers do not attempt it. Call the Wallowa Valley Ranger District to confirm road status before planning a winter trip.
Are there fish in these reservoirs every year?
Yes, but stocking numbers and timing vary. The Oregon Department of Fish and Wildlife stocks both Big Creek Lake and Mirror Lake regularly, though the exact schedule depends on budget and hatchery capacity. Fish populations are also affected by water levels, which fluctuate with irrigation demand and snowmelt.
Can I camp overnight at Big Creek Lake?
Yes. The developed campground has 28 sites available on a first-come, first-served basis. It fills quickly on summer weekends. Dispersed camping is also allowed on nearby forest land if the campground is full.
What is the best time of day to fish here?
Early morning (sunrise to mid-morning) and evening (late afternoon through dusk) are most productive, especially in mid-summer when water temperatures are warm. Midday fishing is slower but still possible, particularly if you fish deeper water or shaded areas near the dam.
Do I need a boat to fish these reservoirs?
No. Shore fishing is productive at both Big Creek Lake and Mirror Lake, especially near inlets, outlets, and dam areas. A float tube or small raft increases your options, but it is not required.