The Big Hole is a classic freestone river, flowing for 150 miles without a dam. It is unique in Montana for holding five species of game fish: brown, rainbow, cutthroat, brook trout, and the last remaining native population of fluvial Arctic Grayling in the lower forty-eight. The river changes character dramatically, from high mountain meadows to wide cottonwood bottoms.
Open-source photograph
Deer Lodge sits at 4,521 feet in the Deer Lodge Valley of Powell County, Montana, 37 miles northwest of Butte along I-90. With 52 lakes within 30 miles, 3 fishing access sites, and access to the Clark Fork plus other blue-ribbon rivers within easy driving distance, Deer Lodge commands one of the highest densities of fishable water for any town in Montana. The Clark Fork River flows directly through the valley, Georgetown Lake—13 miles southwest—is the premier fishery: a 2,800-acre mountain lake stocked with rainbow trout, brook trout, and kokanee salmon, and widely regarded as Montana’s ice fishing capital. The Anaconda-Pintler Wilderness holds backcountry lakes with pure westslope cutthroat trout just 3 miles from town. This guide covers every major fishing zone accessible from Deer Lodge. For Montana's fly fishing heritage, see our Fly Fishing Guide. For the full town profile, see our Deer Lodge guide.
The Clark Fork River flows directly through the Deer Lodge Valley, giving Deer Lodge residents and visitors immediate access to Montana’s longest river. Through the Deer Lodge reach, the Clark Fork holds populations of brown trout and rainbow trout, along with mountain whitefish. The river here winds through open ranch country and cottonwood bottoms, offering a mix of riffles, runs, and deeper pools that produce fish on nymphs, dry flies, and streamers.
The Clark Fork through the Deer Lodge Valley has benefited from ongoing restoration efforts following decades of mining impacts upstream near Butte. Water quality has improved significantly, and the trout population continues to strengthen. The river provides accessible wade fishing and float opportunities, with caddis and stonefly hatches in summer driving surface feeding. Fall brings blue-winged olive hatches and aggressive brown trout ahead of their spawning season, making the Clark Fork a productive fishery from spring through late autumn.
Georgetown Lake, 13 miles southwest of Deer Lodge at 6,330 feet, is THE premier fishery in the area and one of the most productive mountain lakes in Montana. The 2,800-acre reservoir sits in a stunning bowl surrounded by the Flint Creek Range and the Anaconda Range, with Discovery Ski Area visible on the ridgeline above. Georgetown Lake is managed as a trophy fishery and produces large rainbow trout, brook trout, and kokanee salmon.
Rainbow trout are the primary target, with fish averaging 14–18 inches and larger specimens taken regularly. The lake’s rich weed beds support exceptional insect hatches—damselfly, callibaetis, and chironomid hatches—that bring fish to the surface for outstanding dry-fly and float-tube fishing, particularly in June and September. Brook trout are abundant and often run 10–14 inches, feeding aggressively near weed edges and tributary inflows. Kokanee salmon provide fast action for trollers and attract crowds during the late summer spawning run.
Georgetown Lake’s claim to fame, however, is ice fishing. The lake freezes reliably by late December at its 6,330-foot elevation, and the ice fishing season runs through March. Hundreds of ice shanties dot the lake on winter weekends as anglers target rainbow trout, brook trout, and kokanee through the ice. Georgetown Lake is widely considered Montana’s ice fishing capital, and the winter fishery draws anglers from across the state. Access is excellent, with plowed parking areas and a well-established community of winter anglers.
Rock Creek, approximately 30 miles northwest of Deer Lodge, is one of Montana’s legendary blue-ribbon trout streams and a destination fishery in its own right. The creek flows through a scenic canyon for over 50 miles, holding strong populations of rainbow trout, brown trout, and cutthroat trout. Rock Creek is known for its excellent access—a road parallels much of the stream—and its outstanding insect hatches, including salmonfly, golden stonefly, and caddis hatches that bring large trout to the surface from June through August.
Rock Creek offers everything from pocket water and riffles to deep pools and undercut banks. Wade fishing is the primary approach, and the stream’s variety of water types means that nymph anglers, dry-fly purists, and streamer fishers all find productive water. The proximity of Rock Creek to Deer Lodge makes it an easy day trip for anglers seeking a world-class trout stream experience.
The Anaconda-Pintler Wilderness, beginning just 3 miles south of Deer Lodge, holds dozens of alpine lakes scattered across 158,000 acres of high-mountain terrain along the Continental Divide. These backcountry lakes—including Johnson Lake, Warren Lake, and Carpp Lake—hold pure westslope cutthroat trout, Montana’s native trout species, in pristine settings above 7,000 feet.
Backcountry fishing in the Pintler Wilderness rewards anglers willing to hike for their fish. The cutthroat in these lakes are wild, native, and generally willing to take dry flies, small nymphs, and lightweight spinning lures. Most lakes require hikes of 3 –8 miles with significant elevation gain, and the best fishing window runs from mid-July (after ice-out) through September. The solitude and scenery are unmatched—many of these lakes see only a handful of anglers per season. Deer Lodge ’s remarkable 3-mile proximity to the wilderness boundary means these pristine waters are closer than from any other town in the region. Come prepared with bear spray, water purification, and appropriate backcountry gear.
Flint Creek flows through the valley west of Deer Lodge, offering intimate small-stream fishing for brook trout and cutthroat trout in a pastoral setting. The creek winds through open meadows and cottonwood galleries, providing a pleasant half-day fishing option close to town. While Flint Creek does not rival the region’s premier trout streams in size or fish numbers, it offers solitude and easy access for anglers looking for a quiet afternoon on the water.
Smaller streams draining the Flint Creek Range and the foothills of the Anaconda-Pintler Wilderness provide additional creek fishing opportunities. These tributaries hold brook trout and cutthroat in forested settings, and most see very little fishing pressure. They are ideal for light-tackle and tenkara anglers who enjoy exploring small water.
Beyond the Clark Fork and Rock Creek, several other rivers within driving distance of Deer Lodge provide varied trout fishing. The Big Hole River (approximately 50 miles south) is one of Montana’s legendary trout streams, famous for its salmonfly hatch in June and populations of brown trout, rainbow trout, and Arctic grayling—one of the last native grayling populations in the lower 48 states. The Blackfoot River to the north offers additional blue-ribbon trout fishing in the storied river made famous by Norman Maclean.
Montana Fish, Wildlife & Parks maintains 3 public fishing access sites within 30 miles of Deer Lodge. Comers Point and Red Bridge (both 13 miles) are the nearest, providing reliable access to area waters with parking and, in most cases, boat launch facilities.
An impressive 52 lakes lie within 30 miles of Deer Lodge—one of the highest densities of fishable lakes for any town in Montana. Barker Lakes (3 miles) are the closest, followed by Storm Lake (8 miles), Lion Lake (11 miles), Georgetown Lake (13 miles), Hunters Lake (13 miles), and Thornton Lake (13 miles). Many of the alpine lakes hold brook trout or cutthroat trout and are accessible only by trail, rewarding anglers willing to hike for uncrowded water in stunning mountain settings.
+ more lakes within 30 miles.
| Lake | Distance from Deer Lodge |
|---|---|
| Barker Lakes | 3 mi |
| Storm Lake | 8 mi |
| Lion Lake | 11 mi |
| Georgetown Lake | 13 mi |
| Hunters Lake | 13 mi |
| Thornton Lake | 13 mi |
| Big Pozega Lake | 14 mi |
| East Fork Reservoir | 14 mi |
| Little Pozega Lake | 14 mi |
| Porcupine Lake | 14 mi |
| Fisher Lake | 16 mi |
| Racetrack Lake | 16 mi |
After a day on the water, Fairmont Hot Springs (approximately 20 miles from Deer Lodge) is the sole hot spring within 30 miles, offering natural hot springs pools for soaking—a welcome recovery option after long days of wading and hiking to backcountry lakes.
Spring (March–May): Ice-off on Georgetown Lake typically occurs in late April to early May at its 6,330-foot elevation. The immediate post-ice period offers outstanding fishing as rainbow and brook trout feed aggressively near the surface. The Clark Fork River through the Deer Lodge Valley clears before spring runoff in May, providing a window for early-season nymphing. Mountain lakes in the Pintler Wilderness remain frozen through May and often into June.
Summer (June–August): Prime season across all waters. Georgetown Lake’s insect hatches peak—damselfly, callibaetis, and chironomid hatches bring trout to the surface for excellent dry-fly and float-tube fishing. Backcountry lakes in the Pintler Wilderness become accessible as ice clears in late June and July. River fishing on the Clark Fork and Rock Creek is productive with caddis, stoneflies, and attractor patterns. Rock Creek’s salmonfly hatch typically occurs in mid-June.
Fall (September–November): Many locals consider fall the best fishing season. Georgetown Lake fishing improves as summer crowds thin and water temperatures cool—brook trout become especially aggressive ahead of their fall spawn. Cutthroat fishing in the Pintler Wilderness is excellent in September before snowfall closes access. Blue-winged olive hatches on the Clark Fork and Rock Creek extend through November on overcast days.
Winter (December–March): Georgetown Lake’s ice fishing season is the main event. The lake freezes by late December and the ice fishery runs through March, drawing hundreds of anglers on winter weekends for rainbow trout, brook trout, and kokanee through the ice. Georgetown Lake is widely considered Montana’s ice fishing capital. The Clark Fork River remains fishable through winter with nymphs and streamers on warmer afternoons. Backcountry waters are inaccessible.
A Montana fishing license is required for anyone 12 and older on all state waters. Licenses are available online at Montana FWP or at local sporting goods stores. Non-resident licenses are available for durations ranging from two days to a full season.
Special regulations apply on several waters near Deer Lodge. Georgetown Lake has specific daily and possession limits that change periodically—check current regulations before fishing. Rock Creek has special regulations including catch-and-release sections and gear restrictions on certain stretches. The Big Hole River has special regulations protecting Arctic grayling, including seasonal closures on some tributaries and reduced bag limits. Warm Springs Ponds, south of Deer Lodge, offer limited fishing and wildlife viewing but have specific consumption advisories due to their role in environmental treatment processes. Always check current FWP regulations before fishing any water near Deer Lodge.
For hiking and other outdoor activities near Deer Lodge, see our hiking guide.
The insects that govern Montana's rivers follow the sun and the temperature, not the calendar. A cold spring will push every hatch back by two or three weeks. A warm spring will accelerate them. These dates are guidelines, not certainties. A fisherman must learn to read the water and the air, not just the calendar.
| Insect | Peak Months | Key Rivers | Recommended Patterns |
|---|---|---|---|
| Midges (Chironomidae) | Year-round | Missouri, Bighorn, all tailwaters | WD-40 #22-26, Griffiths Gnat, Hi-Vis Parachute Midge |
| Capnia Stonefly | January-February | Clark Fork, Bitterroot | Small dark nymphs |
| Nemoura Stonefly | February-March | Clark Fork, Bitterroot | Small dark nymphs |
| Skwala Stonefly | February-April | Bitterroot, Clark Fork, Gallatin | Skwala Adult #8-10, Chubby Chernobyl, Plan B |
| Blue-Winged Olive (Baetis) | March-May, September-November | All rivers; best on Missouri, Bitterroot | Sparkle Dun #18-22, CDC Dun, RS2 Emerger |
| Western March Brown | March-April | Clark Fork, Blackfoot | Parachute Adams #14 |
| Mother's Day Caddis | April-May | Bitterroot, Clark Fork | Elk Hair Caddis #14-16 |
| Salmonfly (Pteronarcys) | Late May-June | Madison, Big Hole, Yellowstone, Gallatin | Chernobyl Ant #4-6, Stimulator, Club Sandwich |
| Green Drake | June-July | Big Hole, Madison | Hi-Vis Extended Body Drake, Trina's Carnage Drake |
| Golden Stonefly | June-July | Madison, Big Hole, Yellowstone | Stimulator #6-8, Elk Hair Stone, Chubby Chernobyl |
| Yellow Sally | June-July | Most freestone rivers | Yellow Stimulator #14-16 |
| Pale Morning Dun | June-August | Missouri, Gallatin, Bitterroot | PMD Sparkle Dun #16-18, Comparadun, CDC Emerger |
| Pale Evening Dun | June-August | Most freestone rivers | Comparadun #16-18 |
| Caddis | May-October | All rivers | Elk Hair Caddis #14-18, Goddard Caddis |
| Hoppers and Crickets | July-September | Madison, Yellowstone, Ruby, Big Hole | Dave's Hopper #8-10, Fat Albert, Parachute Hopper |
| Trico | July-September | Missouri, Madison, Gallatin | Trico Spinner #22-26, Two-Wing Spinner |
| Ants and Beetles | June-September | All rivers | Black Foam Ant #16-20, Beetle #16-18 |
| Spruce Moth | August-October | Gallatin, Madison, Yellowstone | Galloup's Butch Caddis, Elk Hair Caddis #14 |
| Hecuba | August-September | Big Hole, Beaverhead | Hecuba Comparadun #12-14 |
| Mahogany Dun | September-October | All rivers | Comparadun #16, Split Flag |
| October Caddis | September-November | Clark Fork, Blackfoot, Bitterroot | Elk Hair Caddis #8-10, Stimulator |
The Salmonfly Hatch is the most anticipated event in western fly fishing. The giant stoneflies (Pteronarcys californica) emerge from the Madison, Big Hole, Gallatin, and Yellowstone in late May, moving upriver as water temperatures reach the low 50s F. The hatch is brief, often just two weeks on any given stretch, and it moves upstream at a rate of two to five miles per day. To fish the front of the hatch, you must move with it.
The Skwala Hatch is Montana's first major dry-fly opportunity of the year. It fires on the Bitterroot, Clark Fork, and Gallatin when daytime temperatures warm and water temperatures climb above 40 F, typically late February through April. Trout that have been lethargic all winter aggressively rise to these medium-sized stoneflies.
The PMD Hatch is Montana's most reliable and widespread summer mayfly hatch. PMDs emerge in the mornings on the Missouri, Gallatin, and Bitterroot from June through August, with peak density in July. On the Missouri tailwater, PMD fishing requires long leaders, fine tippet, and an accurate upstream cast to individual rising fish.
Hopper Season is the stuff of legend. Grasshoppers become active along the banks of the Madison, Yellowstone, and Big Hole from July through September. Fish a big foam hopper pattern tight to cut banks, undercut roots, and grassy edges.
All regulations are administered by Montana Fish, Wildlife and Parks (FWP). A fishing license is required for all anglers 12 and older. Regulations change annually; always verify current rules at fwp.mt.gov before fishing.
| License Type | Resident | Nonresident |
|---|---|---|
| Annual Fishing License | $28 | $111 |
| Conservation License (required) | $8 | $10 |
| 2-Day Fishing License | N/A | $30 |
| 10-Day Fishing License | N/A | $55 |
| Youth Annual (under 15) | Free | N/A |
The standard season for rivers and streams runs from the third Saturday in May through November 30. Many waters have special regulations that differ from the standard season.
By Montana law, any person may fish for any fish species without a license on Mother's Day weekend (May 9-10, 2026) and Father's Day weekend (June 20-21, 2026).
The following waters are open to fishing year-round under standard regulations unless otherwise noted:
Several of Montana's premier rivers have special regulations designed to protect the fishery. These include catch-and-release requirements, artificial lure restrictions, and reduced bag limits. Key examples include:
Fishing in Yellowstone National Park requires a separate YNP fishing permit, available at park visitor centers and ranger stations. Montana fishing licenses are not valid within the park boundaries.
Current river conditions are available through the following resources:
A fisherman must check conditions before driving to a river. The freestone rivers of southwest Montana can blow out overnight after a heavy rain or a warm spell that accelerates snowmelt. A river that was fishing perfectly on Tuesday can be unfishable by Thursday.