Smith River
Permit-Only Float · Camp Baker to Eden Bridge
Central Montana, USA
Open live forecast →Target species: Brown and Rainbow.
Stream gauge: 06077200. Flow and water temperature update on every refresh.
Weekly AI Outlook as of 06/05/26
At 451 cfs, the Smith is running clean and perfect for the permit float. Water temp hit 54.5°F — right on the threshold for salmonfly emergence, which should be cranking up in the canyon sections. Golden stones are already active. No recent shop intel — outlook based on current conditions. Focus dry/dropper rigs with big stones up top and PMD nymphs trailing. The cold snap Saturday (39°F high) will slow surface activity, but Sunday's rebound should fire things back up.
- Flow: 451 cfs — ideal permit water. Clean and wadeable with perfect canyon visibility. Well below the 1,000 cfs threshold for prime fishing.
- Hatches: 54.5°F water temp triggers salmonfly emergence. Golden stones active. PMDs and caddis building. Saturday's freeze pauses bugs.
- Water Temp: 54.5°F — crossed the salmonfly threshold. Expect big stone activity in canyon sections despite air temp volatility ahead.
- Best Window: Late afternoons through evening. Avoid Saturday's cold front — fish Sunday afternoon rebound after temps recover to 55°F.
Generated weekly from live USGS gauge readings, weather forecasts, and recent fly shop reports. Updates Friday mornings.
About this Water
- Freestone
- Best months: May–Sept, peak June–July
The Smith River in central Montana is one of the great wilderness float fishing experiences in the American West. The 59-mile permit-only float through a remote limestone canyon offers 4-5 days of camping and fishing in a setting that has changed little since Lewis and Clark passed nearby. Brown and rainbow trout inhabit the canyon pools and riffles in good numbers, responding enthusiastically to dry flies during the evening caddis hatches. The permit system ensures light pressure and a genuine wilderness experience.
The Smith River permit lottery is one of the most competitive in Montana — demand far exceeds supply, reflecting the extraordinary quality of this wilderness float experience.
January Outlook
The Smith River permit float is closed for the season. The canyon is inaccessible in deep winter — the Camp Baker road into the canyon is typically impassable without snowmobiles or snowshoes. This is planning season for the Montana FWP permit lottery.
Productive Patterns
- Closed — off season
Tips
The Smith River permit lottery applications open in January. Visit the Montana FWP website to apply. Demand significantly exceeds supply — the permit lottery is competitive.
Water Notes
River closed. Canyon road typically impassable. River flows low and ice present.
February Outlook
Still off-season. The Smith River canyon remains inaccessible. The permit lottery applications are processed in February with results announced before the season opens.
Productive Patterns
- Closed — off season
Tips
Lottery permit results arrive in late winter. If selected, begin planning your multi-day float camping logistics. Shuttle services and outfitters in White Sulphur Springs can assist.
Water Notes
River closed. Winter conditions. Camp Baker road closed or restricted.
March Outlook
Pre-season on the Smith River. March sees snowmelt beginning and the canyon road may open by late month in mild years. The river is rising toward optimal float conditions. Permit holders are confirmed.
Productive Patterns
- Pre-season — no fishing
Tips
The Smith opens for permit floats in mid-May. March is for logistics — shuttle arrangements, gear preparation, fly selection. The canyon teases its approach through the limestone walls.
Water Notes
River rising with snowmelt. Canyon road may partially open late in the month. Float season begins mid-May.
April Outlook
High water runoff on the Smith River. The float season hasn't opened yet and flows are typically too high and turbid for safe floating. The canyon is coming alive but is not yet fishable.
Productive Patterns
- Pre-season — high water
Tips
April runoff on the Smith can push flows to 2,000+ cfs, making the float dangerous and fishing poor. The season opens when flows stabilize, typically mid-May. Final gear preparations for permit holders.
Water Notes
1,000–3,000+ cfs. Turbid runoff from the mountains. Permit season opens mid-May when conditions allow.
May Outlook
The Smith River permit-only float (Camp Baker to Eden Bridge) is typically fishable from mid-May. BWO and Caddis hatches produce good dry fly action alongside spectacular white limestone canyon walls.
Productive Patterns
- Elk Hair Caddis
- BWO Parachute
- Pheasant Tail
- Golden Stone
Tips
A 4-5 day float camping expedition. Permit required from Montana FWP lottery. Shuttle service to/from Camp Baker available from White Sulphur Springs area outfitters. Wading is possible at camp sites.
Water Notes
500–1,500 cfs. Runoff may delay float start in high snow years. Check river forecast carefully before putting in.
June Outlook
Prime float season. Caddis and PMD hatches are prolific. Brown trout are abundant and willing in the canyon sections. The canyon limestone geology produces outstanding water chemistry for trout.
Productive Patterns
- Elk Hair Caddis
- PMD Sparkle Dun
- Golden Stone Stimulator
- Copper John
Tips
Evenings on the Smith are exceptional — dense caddis hatches and rising fish across the entire river surface. Camp at the marked campsites. The canyon walls in late light are magnificent.
Water Notes
500–1,500 cfs. Late runoff can affect early June. Best after flows drop below 1,000 cfs.
July Outlook
Peak summer float conditions. Hopper fishing begins and fish are aggressive. The Smith's isolation means fish see relatively few artificial flies compared to other Montana rivers.
Productive Patterns
- Dave's Hopper
- Chubby Chernobyl
- PMD Cripple
- Elk Hair Caddis
Tips
July floats have ideal temperatures and flows. Pack for afternoon thunderstorms — the canyon channels weather quickly. Morning hopper, evening caddis is the daily program.
Water Notes
400–800 cfs. Ideal float conditions. Water 62–68°F.
August Outlook
Hopper season is excellent on the Smith. The canyon grasslands produce abundant natural hoppers and fish respond accordingly. Minimal pressure due to the permit system.
Productive Patterns
- Dave's Hopper
- Parachute Ant
- Elk Hair Caddis
- Streamer (evening)
Tips
The permit system's biggest benefit shows in August when other rivers are crowded — the Smith is pristine and lightly fished. Evening streamers produce the largest fish.
Water Notes
300–600 cfs. Low and clear in late August. Wading becomes possible in places. Water 64–68°F.
September Outlook
Fall float conditions. BWO hatches return. Brown trout are aggressive in September as they begin pre-spawn conditioning. The canyon turns golden with cottonwood color.
Productive Patterns
- Blue Winged Olive
- Streamer
- Hopper
- Mahogany Dun
Tips
The fall permit draw for September is less competitive. Browns in the 18-22 inch class are the target. Streamer fishing improves significantly through the month.
Water Notes
250–500 cfs. Crystal clear. Water 50–60°F. Prime fall conditions.
October Outlook
The Smith River float permit season is closed after Labor Day. The canyon is accessible to hikers and backpackers but the permit float system is finished for the year. The canyon in October is spectacular with cottonwood color along the limestone walls.
Productive Patterns
- Closed — permit season ended
Tips
The float season ends in September. Some day-hiking access to the canyon rim is possible in October. Brown trout would be excellent in the canyon in October but access without a float is extremely limited.
Water Notes
River low and clear 200–400 cfs. Canyon largely inaccessible without a multi-day float. Season closed.
November Outlook
Off season. The Smith River is at rest through winter. The canyon road to Camp Baker may close with early snow. The river's permit system protects this unique resource through the winter season.
Productive Patterns
- Closed — off season
Tips
The Smith River is closed from October through mid-May. Use the off-season to apply for next year's permit lottery and plan your multi-day expedition.
Water Notes
River low and cold. Canyon road may be closed. Off season.
December Outlook
Winter on the Smith River canyon. Deep snow, closed roads, and a river at rest. The limestone canyon walls and cottonwood bottoms are dormant but extraordinary in winter light.
Productive Patterns
- Closed — winter season
Tips
The Smith River permit lottery applications open in January — mark your calendar. The canyon is locked in winter and inaccessible. A great time to read about the history of this storied Montana river.
Water Notes
River low and frozen in sections. Canyon road closed. Complete off-season.
Hatch Calendar
| Insect | Peak | Active | Size | Productive Patterns |
|---|---|---|---|---|
| Blue Winged Olive Baetis tricaudatus |
Apr, Oct | Mar, Apr, May, Sep, Oct | #18–22 |
|
| Salmonfly Pteronarcys californica |
Jun | May, Jun, Jul | #4–8 |
|
| Golden Stonefly Hesperoperla pacifica |
Jun | Jun, Jul | #8–12 |
|
| Caddis Hydropsyche / Brachycentrus spp. |
Jul, Aug | May, Jun, Jul, Aug, Sep | #14–18 |
|
| Pale Morning Dun Ephemerella inermis |
Jul | Jun, Jul, Aug | #16–18 |
|
| Yellow Sally Isoperla / Chloroperlidae |
Jul | Jun, Jul, Aug | #12–16 |
|
| Hoppers Acrididae / Tettigoniidae |
Aug | Jul, Aug, Sep | #8–12 |
|
Access & Approach
Put-in at Camp Baker (White Sulphur Springs, MT). Take-out at Eden Bridge. A Montana FWP permit is required — drawn by lottery annually in late winter. Shuttle service available from White Sulphur Springs outfitters. Camping at designated sites only.
Regulations & License
Fishing in Montana requires a current license. Always verify season dates, bag limits, and any special-regulation waters before you fish.
Montana fishing regulations & license →
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About Current
Smith River conditions on Current combine real-time flow data (USGS, WSC, CDEC, CEHQ), weather, tide predictions, hatch probabilities calibrated to this specific water, and recent fly shop reports from the area.
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