Compare 1 documented access option before you commit to a shoreline or launch.
View access →Montana lake guide
Georgetown Lake Fishing
Georgetown Lake is a major western Montana trout and kokanee destination where elevation, weather, ice season, boating access, and current regulations all matter.
LocationGranite County / Deer Lodge County, Montana
Primary targetsKokanee, Rainbow Trout
Best seasonSpring to early summer
Lake sizeabout 2,818 acres
Max depth38 feet
Access1 documented option
Guide reviewed
Start here
Plan Georgetown 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 depth15 feet
Max depth38 feet
Elevationabout 6,337 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 bathymetry resource
Official static bathymetry
Interactive contours available
Georgetown Lake depth map
Official public lake-depth PDF. Survey age and lake conditions may limit current accuracy. Not for navigation.
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.
Trout and salmon
Kokanee
Troll small dodgers, hoochies, wedding rings, or spinners.
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
Brook Trout
See seasonal habitat, presentations, identification, and regulation cautions.
View species guide
Stocking information
Georgetown 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 stocked746,506
Stocking events23
Years stocked5
Species stocked2
Species in this period: Brook Trout, Rainbow Trout
Most recent stockings
| Date | Species | Quantity | Size | Details |
|---|---|---|---|---|
| Jun 23, 2026 | Brook Trout | 44,226 | 5 in avg length | Giant Springs Trout Hatchery · Montana FWP Fish Stocking Records |
| Jun 15, 2026 | Rainbow Trout | 26,472 | 4 in avg length | Bluewater Springs Trout Hatchery · Montana FWP Fish Stocking Records |
Source: Montana Fish, Wildlife & Parks Last checked: Sep 5, 2026 10:53am
Fishery intelligence
Official fishery evidence
Agency survey records and measured fishery data, distilled for trip planning.
9
verified signals
Research & surveys
Official survey records available
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, kokanee- 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
kokanee early- 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
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.
Quick answers
Georgetown Lake fishing questions
Answers to common fishing questions that go beyond the four trip-planning decisions above.
When is the best time to fish Georgetown Lake?
At more than 6,300 feet, Georgetown has a long ice season and fast-changing weather. Verify current ice, wind, and access conditions before winter or shoulder-season travel.
See seasonal guidance →Is a depth map or bathymetry available for Georgetown Lake?
Verified official Montana FWP bathymetry chart; live FWP contour query also enabled. FishyNW only labels bathymetry as available when a source-backed map, chart, or contour resource is documented.
View map and bathymetry →Are there special fishing regulations for Georgetown Lake?
Georgetown Lake has lake-specific exceptions in Montana regulations. Check the current Western District regulations before fishing.
Review regulations →Know before you go
Rules and restrictions
Georgetown Lake has lake-specific exceptions in Montana regulations. Check the current Western District regulations before fishing.
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.
Rainbow trout, Brook trout, Kokanee
Montana FishMT lists Georgetown Lake with current report, fish species, survey data, and access site sections.
Rainbow trout, Brook trout, Kokanee
Montana FishMT source check includes fishery survey, sampling, or population context for Georgetown Lake. This supports species planning for Rainbow trout, Brook trout, Kokanee, not guaranteed success.
Rainbow trout, Brook trout, Kokanee
FishMT notes a partial fish kill was observed at Georgetown Lake in 2018, with follow-up gill netting in 2018 showing results similar to previous years. Use as historical fishery context.
Rainbow trout, Brook trout, Kokanee
FishMT lists Georgetown Lake fishing pressure estimates including very high 2021, 2020, 2019, and 2017 angler-day totals compared with many western Montana waters. Use as a high pressure signal.
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.
Keep exploring
Nearby waters
The four closest FishyNW lake guides by straight-line distance.
Harpers Lake
32.8 miles away · Lake
Targets include Rainbow Trout, Westslope Cutthroat Trout.
Lake Como 46.3 miles away · LakeTargets include Rainbow Trout, Westslope Cutthroat Trout, Kokanee.
Delmoe Lake 47.0 miles away · LakeTargets include Rainbow Trout, Yellowstone Cutthroat Trout, Brook Trout.
Browns Lake 54.1 miles away · LakeTargets include Rainbow Trout, Cutthroat Trout, Brook Trout.
Did you know?
What makes Georgetown Lake distinctive
Georgetown Lake covers roughly 2,818 surface acres, making it one of the larger waters represented in FishyNW.
Georgetown Lake sits at roughly 6,337 feet in elevation, so seasonal access and water temperature can differ sharply from lowland lakes.
Georgetown Lake is documented in Granite County / Deer Lodge 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.