Compare 2 documented access options before you commit to a shoreline or launch.
View access →Montana lake guide
Rainy Lake Fishing
Rainy Lake is a northwest Montana fishing lake with an official Montana FWP bathymetry survey. FishyNW retains the previously researched species and access information and uses the FWP lake map for verified physical lake measurements rather than estimating depth. Montana FWP FishMT and the official bathymetry record remain the primary sources; no current mapped public-launch record has been added without shoreline verification.
LocationMissoula County, Montana
Primary targetsYellow Perch
Best seasonSpring through fall
Lake size82 acres
Access2 documented options
Guide reviewed
Start here
Plan Rainy 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
Elevation4,198 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.
Help us place this lake on the map
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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
Rainy 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.
Stocking information
Rainy 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 stocked2,000
Stocking events2
Years stocked2
Species stocked1
Species in this period: Westslope Cutthroat Trout
Most recent stockings
| Date | Species | Quantity | Size | Details |
|---|---|---|---|---|
| Jun 5, 2025 | Westslope Cutthroat Trout | 1,000 | 4.6 in avg length | Washoe Park Trout Hatchery · Montana FWP Fish Stocking Records |
| Jun 22, 2023 | Westslope Cutthroat Trout | 1,000 | 4.5 in avg length | Washoe Park Trout Hatchery · Montana FWP Fish Stocking Records |
Source: Montana Fish, Wildlife & Parks Last checked: Sep 5, 2026 10:37am
Fishery intelligence
Official fishery evidence
Agency survey records and measured fishery data, distilled for trip planning.
6
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- 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
panfish- 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- 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
perch, 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
Montana Western Fishing District regulations apply. Check the current FWP regulations and any posted site-specific restrictions before fishing.
Getting on the water
Access and launches
Seeley-Swan/Clearwater corridor access should be checked for seasonal road and launch conditions.
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, Yellow perch
FishMT has a Rainy Lake waterbody page with official FishMT navigation and source sections. Use as source-available survey context until stronger public details are collected.
Trout, Yellow perch
Montana Fish, Wildlife & Parks FishMT source check includes fishery survey, sampling, or population context for Rainy Lake. This supports species planning for Trout, Yellow perch, not guaranteed success.
Trout, Yellow perch
FishMT Rainy Lake page exists as an official waterbody source. Use as limited access-planning context and verify details before surfacing strongly.
Trout, Yellow perch
Rainy Lake has source-available FishMT context, but detailed public signal strength remains light. Use as a low-confidence planning clue only.
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.
Heritage Outdoors
Locally owned outdoor and fishing storeSeeley Lake, Montana · Local Seeley-Swan Valley outdoor store carrying fishing equipment, camping essentials, and seasonal outdoor gear.
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.
Lake Inez
2.9 miles away · Lake
Targets include Kokanee, Rainbow Trout, Yellow Perch.
Lake Alva 3.8 miles away · LakeTargets include Kokanee, Rainbow Trout, Yellow Perch.
Holland Lake 6.2 miles away · LakeTargets include Westslope Cutthroat Trout, Rainbow Trout, Bull Trout.
Lindbergh Lake 9.6 miles away · LakeTargets include Bull Trout, Westslope Cutthroat Trout, Rainbow Trout.
Did you know?
What makes Rainy Lake distinctive
Rainy Lake sits at roughly 4,198 feet in elevation, so seasonal access and water temperature can differ sharply from lowland lakes.
Rainy Lake is documented in Missoula County County with a dedicated FishyNW fishing and access profile.
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.