Compare 2 documented access options before you commit to a shoreline or launch.
View access →Montana lake guide
Bull Lake Fishing
Bull Lake is a larger northwest Montana lake where access, weather, coldwater rules, and mixed species planning should be handled carefully.
LocationLincoln County, Montana
Primary targetsSmallmouth Bass, Largemouth Bass, Rainbow Trout
Best seasonSpring through fall
Lake size1,162 acres
Max depth64 feet
Access2 documented options
Guide reviewed
Start here
Plan Bull Lake in 60 seconds
Make the trip decisions first. Use the deeper lake science, surveys, stocking history, and source material below when you want more detail.
Start with the documented species list, then open a species guide for seasonal behavior and practical tactics.
Choose a fish →Use verified depth information to identify basins, breaks, points, channels, and other structure before you fish.
View depth information →Wind, rain, temperature, and changing access can alter the plan quickly. Check current conditions before leaving.
Check conditions →Lake details
Depth, size & key facts
Average depth26 feet
Max depth64 feet
Elevation2,318 feet
Public launches1
Summer cautionHeat
Lake depth map
Depth contours may take a little time to load. Sorry for the inconvenience.
Contour line20 ft Visible depth label
Source: Montana Fish, Wildlife & Parks. Historical survey data may not reflect current water levels or underwater hazards. Informational only; not for navigation.
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Trip conditions
Current conditions
Loading the local forecast. Check access and official notices before leaving.
TodayLoading
WindLoading
GustsLoading
Rain chanceLoading
Four day outlook
Tools
Today's Lure Pick
Open Tools for species-specific lure guidance.
Official depth chart
Official static bathymetry
Interactive contours available
Bull Lake official depth chart
Open the official depth publication to inspect the lake chart. This static survey complements interactive contours when available and should not be used as a navigation chart.
Fishery record
Documented fish species
These species come from the lake record. Open a species guide for identification, seasonal behavior, and practical tactics without confusing general species guidance with a lake-specific survey result.
Bass and sunfish
Smallmouth Bass
Focus on rock, points, breaks, and transitions.
View species guide
Bass and sunfish
Largemouth Bass
Look for weeds, docks, wood, shade, and warmer pockets.
View species guide
Trout and salmon
Rainbow Trout
Use bait, small spinners, spoons, or slow trolling depending on access.
View species guide
Trout and salmon
Bull Trout
See seasonal habitat, presentations, identification, and regulation cautions.
View species guide
Trout and salmon
Westslope Cutthroat Trout
See seasonal habitat, presentations, identification, and regulation cautions.
View species guide
Trout and salmon
Lake Trout
Use electronics to find deep structure, bait, and suspended marks.
View species guide
Perch and pike
Northern Pike
Fish weeds, bays, ambush edges, and baitfish areas.
View species guide
Whitefish
Pygmy Whitefish
See cold-water habitat, seasonal movement, and presentation tips.
View species guide
Stocking information
Bull Lake Fish Stocking
Recent stocking information summarized from Montana Fish, Wildlife & Parks. Dates and quantities can change. Always verify current fishing rules with the official agency before fishing.
Official stocking history
Five-year summary · 2022–2026
View agency record Fish stocked219,598
Stocking events10
Years stocked5
Species stocked2
Species in this period: Kokanee, Rainbow Trout
Most recent stockings
| Date | Species | Quantity | Size | Details |
|---|---|---|---|---|
| May 7, 2026 | Rainbow Trout | 1,510 | 3.3 in avg length | Jocko River Trout Hatchery · Montana FWP Fish Stocking Records |
| Jul 1, 2025 | Rainbow Trout | 1,504 | 3.8 in avg length | Jocko River Trout Hatchery · Montana FWP Fish Stocking Records |
Source: Montana Fish, Wildlife & Parks Last checked: Sep 5, 2026 10:54am
Fishery intelligence
Official fishery evidence
Agency survey records and measured fishery data, distilled for trip planning.
8
verified signals
Research & surveys
Agency-backed record
Use the evidence
Turn records into a fishing plan
- Compare survey evidence with the seasonal guide.
- Use the map to connect depth, access, and structure.
- Confirm current rules and access before your trip.
Angler interpretation
How the fishery changes through the seasons
This is the practical layer: use it alongside the documented species, depth, stocking, survey, access, and regulation record above. The current season opens first.
Spring
trout, bass- Start here
- Cooler water, recent stocking, fish moving shallow, and protected shorelines or inlets that warm first.
- Watch for
- Cold fronts, changing water levels, muddy inflow, and early-season ramp conditions.
Summer
bass- Start here
- Fish early or late, then adjust toward deeper water, shade, vegetation, or comfortable temperature zones.
- Watch for
- Heat, weeds, algae, heat, and heavier boat traffic.
Fall
trout, bass, northern pike- Start here
- Cooling water, shoreline structure, points, weed edges, and simple presentations that let you cover water.
- Watch for
- Wind on open water, rapidly changing weather, and shorter daylight windows.
Winter
trout- Start here
- Legal open-water or ice access, stable depth zones, and conservative cold-weather trip plans.
- Watch for
- Ice safety where relevant, ramps, road conditions, cold-water exposure, and current rules.
Know before you go
Rules and restrictions
FishMT directs anglers to the current Montana fishing regulations for this Western Fishing District water. Verify the current district rules and any emergency restrictions before fishing.
Getting on the water
Access and launches
The Montana FWP bathymetry survey identifies camping around Bull Lake. Use current FWP/USFS information to verify the specific public launch, campground, fees, and seasonal road conditions before towing.
Sorry, there are no mapped boat ramps for this lake yet. Check the access information below for other ways to reach the water.
More launch links
Official field updates Recent surveys and fishing pressure
Official surveys and pressure information can help with trip planning. Conditions change, and these updates do not guarantee current fishing.
Trout, Northern pike, Bass
Montana FishMT provides an official Bull Lake waterbody page with public waterbody information, fish species, and survey data sections. Use as source-available survey context, not live catch data.
Trout, Northern pike, Bass
Montana FWP states FishMT survey inventory data comes from its centralized Fisheries Information System and may include biologist, technician, agency, university, contractor, and other data. Use Bull Lake signals as provisional planning context.
Trout, Northern pike, Bass
Montana Fish, Wildlife & Parks FishMT source check includes fishery survey, sampling, or population context for Bull Lake. This supports species planning for Trout, Northern pike, Bass, not guaranteed success.
Trout, Northern pike, Bass
Montana Fish, Wildlife & Parks FishMT Survey Inventory source check includes fishery survey, sampling, or population context for Bull Lake. This supports species planning for Trout, Northern pike, Bass, not guaranteed success.
Northern Pike
Montana Fish, Wildlife & Parks FishMT source check includes fishery survey, sampling, or population context for Bull Lake. This supports species planning for Trout, Northern pike, Bass, not guaranteed success.
Northern Pike
Montana Fish, Wildlife & Parks FishMT Survey Inventory source check includes fishery survey, sampling, or population context for Bull Lake. This supports species planning for Trout, Northern pike, Bass, not guaranteed success.
Explore by region or target
More ways to explore this fishery
Use FishyNW fishing hubs to compare this water with other relevant lakes and rivers without starting another search.
Local angler stops
Nearby bait & tackle
Independent and locally owned shops near this water. Call ahead if you need a specific bait or item.
Jay's Tackle Shop
Independent local tackle shopLibby, Montana · Small local tackle stop focused on fishing lures and tackle. Call ahead when traveling.
Shoo Fly Fishing Co.
Independent fishing and fly shopTroy, Montana · Fly, trolling, kokanee, bass, pike, perch and walleye tackle plus bait and custom rod work.
Local-business listings can change. FishyNW does not rank shops by payment or sponsorship. Verify current hours and inventory before driving.
Keep exploring
Nearby waters
The four closest FishyNW lake guides by straight-line distance.
Cabinet Gorge Reservoir
9.8 miles away · Lake
Targets include Smallmouth Bass, Largemouth Bass, Northern Pike.
Noxon Reservoir 19.2 miles away · LakeTargets include Smallmouth Bass, Largemouth Bass, Northern Pike.
Upper Thompson Lake 34.4 miles away · LakeTargets include Rainbow Trout, Yellow Perch, Northern Pike.
Thompson Chain of Lakes 38.0 miles away · LakeTargets include Kokanee, Rainbow Trout, Brook Trout.
Did you know?
What makes Bull Lake distinctive
Bull Lake reaches about 64 feet at its deepest documented point.
Bull Lake covers roughly 1,162 surface acres, making it one of the larger waters represented in FishyNW.
FishyNW documents 8 fish species here, giving Bull Lake an unusually broad mix of fishing opportunities.
Research & monitoring
Water science & monitoring
Loading available public monitoring and fishery science. Use this as supporting research, not as a live fishing report.
Pass 3 · depth + water column
Seasonal Fish Habitat
Surface · 0 ft
How to read this data
Temperature, dissolved oxygen, clarity, nutrients, chlorophyll-a, pH, and conductivity are observations from public monitoring records and may be historical. Thermocline depth is shown only when FishyNW can derive a strong vertical temperature gradient from a measured profile. It is not treated as a permanent lake characteristic.
Trophic indication uses the Carlson Trophic State Index only when FishyNW can normalize a measured chlorophyll-a, Secchi, or total-phosphorus value. It is a derived ecological indicator, not an agency impairment determination.
Seasonal Fish Habitat is shown only when verified bathymetry overlaps a same-day, same-station temperature and dissolved-oxygen profile. It is a historical screening snapshot, not a live prediction of where fish are located.
For lake trout, FishyNW uses the broader USGS-tested screening combination of water at or below 15°C (59°F) and dissolved oxygen at or above 4 mg/L. For other coldwater species, FishyNW does not invent a preferred-temperature threshold; it shows only the observed thermocline-to-oxygenated-depth refuge when the evidence supports it.
Harmful-algae status is never inferred from missing data. Always check the linked state source for current advisories before contact recreation.
Open matched Water Quality Portal recordsSources & feedback
Verified resources
Official links for this lake
Open the source that matches what you are planning.
Community feedback
See something that needs an update?
Send the correction and, when possible, the source. FishyNW reviews submissions before changing the guide.