Montana
Madison River below Hebgen Lake near Grayling
Location Snapshot
Immediately below Hebgen Lake, the Madison River runs through a cold, regulated upper reach before continuing toward Earthquake Lake and the broader Madison Valley. Wild rainbow and brown trout define the fishery, supported by riffles, runs, and strong tailwater-influenced habitat.
Current River Rating
Unavailable
Not enough local guidance to rate conditions.
Low confidence
Should I Go?
Not Enough Data
Timing Outlook
No reliable fishing window is available with the current data.
Why
- This river does not yet have enough local fishing guidance to assign a rating.
Cautions
- Water temperature is unavailable.
Blocking Factors
- Configured water observations are currently unavailable.
Current Readings
- Flow
- Not available
- Gage Height
- Not available
- Water Temperature
- Not available
- Latest current reading
- Not available
Monitoring temporarily unavailable. · USGS station 06038500 · Direct monitoring location
Readings from past 7 Days
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Historical readings are provided for context. Readings outside the current freshness window are not used to rate current conditions.
Better Nearby Options
Checking nearby StrikeTracks waters…
Preliminary guidance only. Always assess current weather, access, water depth, current speed, and your own ability before entering the river.
Changing Conditions Advisory
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Weather Near Gauge
Current Weather
Clear
Temperature
40°F
Feels like
32°F
Wind
5 mph SE
Wind gust
5 mph
Current precipitation
0.00 in
Updated
Oct 20, 2026, 3:45 AM
Recent Rainfall
Estimated precipitation near this gauge
Last 6 hours
0.00 in
Last 24 hours
0.00 in
Last 48 hours
0.00 in
Little recent rainfall near this river.
Next 24 Hours
Tue 5 AM
Clear
Temp 40°F
Chance 1%
Precip 0.00 in
Wind 5 mph
Tue 9 AM
Overcast
Temp 40°F
Chance 1%
Precip 0.00 in
Wind 7 mph
Tue 1 PM
Overcast
Temp 57°F
Chance 1%
Precip 0.00 in
Wind 6 mph
Tue 5 PM
Clear
Temp 59°F
Chance 1%
Precip 0.00 in
Wind 7 mph
Tue 9 PM
Clear
Temp 48°F
Chance 0%
Precip 0.00 in
Wind 3 mph
Wed 1 AM
Clear
Temp 44°F
Chance 2%
Precip 0.00 in
Wind 3 mph
Four-Day Forecast
Tue, Oct 20
Overcast
High 60°F / Low 38°F
Chance 2%
Precip 0.00 in
Max gust 11 mph
Wed, Oct 21
Overcast
High 61°F / Low 41°F
Chance 7%
Precip 0.00 in
Max gust 17 mph
Thu, Oct 22
Overcast
High 63°F / Low 42°F
Chance 55%
Precip 0.00 in
Max gust 14 mph
Fri, Oct 23
Showers
High 48°F / Low 38°F
Chance 98%
Precip 1.09 in
Max gust 12 mph
Weather and rainfall are estimated for this river's coordinates. Local conditions can vary, especially in mountainous terrain and during isolated storms.
Recent rainfall can influence river flow, but the timing and magnitude depend on watershed size, soil conditions, upstream reservoirs, and dam releases.
Weather data: Open-Meteo
Historical Flow
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Fishing Overview
Wild brown and rainbow trout are in the Madison River below Hebgen Lake near Grayling.
Fishery Profile
Documented species you may encounter at Madison River.
Species images are AI-generated illustrations for visual reference and may simplify natural variation. Fishery records are based on the cited agency sources. About fish illustrations
Target species
Brown Trout
Salmo trutta
- Expectation
- Primary
- Population
- Wild
- Native status
- introduced
- Confidence
- High confidence
Source: Montana Fish Wildlife and Parks
Rainbow Trout
Oncorhynchus mykiss
- Expectation
- Primary
- Population
- Wild
- Native status
- introduced
- Confidence
- High confidence
Source: Montana Fish Wildlife and Parks
Fishery characteristics
- Composition
- Wild
- Great Lakes tributary
- No
- Flow regime
- Mixed flow regime
Best seasons
- Spring
- Summer
- Fall
Common techniques
- Dry flies
- Fly fishing
- Nymphing
- Spinning
- Streamers
Official sources
Hatch Match
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Location and Access
USGS monitoring location
Gallatin, Montana
The map marker represents the cataloged waterbody or monitoring location and may not indicate legal parking or public access. Confirm access through the official information before visiting.
River Details
County
Gallatin
Management Category
Wild trout tailwater
Regulation Scope
Madison River below Hebgen Lake near Grayling.
Regulation Summary
Madison below Hebgen: FWP Madison special regulations and Central District Exceptions. Confirm current closures.
Target Species
Brown Trout, Rainbow Trout
Access, Parking, and Regulations
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