Idaho / West
South Teton River near Rexburg
A reach-specific South Teton report for anglers who need tributary rules, flow context, small-water tactics, and realistic access expectations near Rexburg.
Image: Generated regional planning image for South Teton River near Rexburg / BlueStreamFly generated; not exact location / BlueStreamFlyFishability now: South Teton River near Rexburg fishability today
GreatData confidence: High96/100
Fishable now because the live gauge is falling, weather is mild, and no public alert is active.
Flow observed
4:45 PM UTC
Weather observed
5:00 PM UTC
Score calculated
5:26 PM UTC
Why this rating
Flow
Weather
Public alerts
Next 6-12 hours
Improving / hold
A falling gauge and usable weather should keep the next 6-12 hours in play unless tributaries stain or heat builds.
USGS flow
390 cfs
Current trend: flow falling, rating likely holding strong unless weather or clarity changes.
More planning details: flies, flow bands, and live source checks
Fish it today
Start here
Base in Rexburg, check IDFG first, confirm public access, then fish short sections slowly with light rigs.
Best flow clue
Clear, modest flows that keep enough depth in buckets without making crossings muddy or pushy.
Skip trigger
Skip when tributary rules are closed, water is muddy, or low warm conditions would stress trout.
Flow decision bands
Clear modest tributary flow
Stable or slowly falling SF Teton flow is the best sign that small buckets, undercut edges, and short dry-dropper water can fish cleanly.
Muddy pulse
Rising or stained tributary water should move the day to scouting or a larger backup until visibility returns.
Low warm small water
Low water can fish only in cool windows with careful approaches and fast trout handling.
Rule or access mismatch
A good flow still needs IDFG tributary rules and clearly public access before fishing.
USGS flow
390 cfs
Current trend: flow falling, rating likely holding strong unless weather or clarity changes.
Live USGS flow
390 cfs / falling about 42%
Live NWS forecast
65F / Sunny
Water temperature not verified
Heat guidance uses weather and river type unless an official water-temperature value is available.
No NWS alert flag
No active NWS alert was returned for this forecast point.
RiverReports is the quick chart, backed by USGS 13055340 SF Teton River near Rexburg ID.
Idaho Fish and Game lists this water as South Teton River and ties it to Henrys Fork tributary rules.
IDFG tributary guidance includes season and cutthroat-harvest limits that should be checked before every trip.
Rexburg-area park access can help with orientation, but anglers still need to respect private banks and posted property.
Editorial review
How this report is maintained
This report uses official regulation, flow, weather, access, and public-land sources first, then adds practical planning guidance for fly anglers.
Byline
BlueStreamFly editorial desk
Reviewed by
BlueStreamFly source review
Maintained by
BlueStreamFly
Last material review
2026-06-02
Report confidence
Good confidence
86/100
Good confidence: RiverReports, USGS 13055340 near Rexburg, Idaho Fish and Game South Teton River rules, Rexburg Eagle Park access context, weather coverage, generated media disclosure, and route-specific small-water guidance support the page. Confidence is moderated by limited public access specificity, private-bank risk, small-water temperature swings, muddy pulses, and tributary-rule timing.
Regulations
Idaho Fish and Game South Teton River sources support tributary, season, and cutthroat rule checks.
Access
Rexburg Eagle Park provides local access context, but exact bank entries and private-property edges remain day-specific.
Flow and weather
RiverReports, USGS 13055340 near Rexburg, and the National Weather Service point support live flow and weather decisions.
Fishing usefulness
The page now separates tributary flow, small-water access, low warm water, muddy pulses, private-bank caution, IDFG rule checks, and Teton drainage backups.
Fishability dashboard and source review
2026-06-02 / material content or source review
RiverReports and USGS 13055340 SF Teton near Rexburg flow, Idaho Fish and Game South Teton River rules, Rexburg Eagle Park access context, National Weather Service data, and route-specific small-tributary and private-bank guidance were checked before updating the current-fishability decision layer.
2026-06-02
Updated the South Teton River near Rexburg with small-water flow bands, access cards, backup cues, and confidence signals.
2026-05-26
Published a new South Teton River near Rexburg report with tributary rule guardrails, flow checks, access caution, hatches, and small-water tactics.
Angler planning edge
Local details that change the plan
Best for
Short Rexburg-area trout sessions, Small-water dry-dropper fishing, Teton drainage backup planning
Wade or float
Wade only. This is small-water planning, not a float page.
Best flows
Clear, modest flows that keep enough depth in buckets without making crossings muddy or pushy.
When to skip
Skip when tributary rules are closed, water is muddy, or low warm conditions would stress trout.
Local plan
Base in Rexburg, check IDFG first, confirm public access, then fish short sections slowly with light rigs.
Pressure
Pressure is usually local and spot-based. One careless angler can affect a whole small reach.
Access nuance
Public orientation points do not make every bank public. Respect posted property and avoid using private banks as travel routes.
Backup water
Use the main Teton, Teton at Driggs, or South Fork Snake when the South Teton is too low, warm, or access-limited.
About the river
Setting, character, and why it fishes the way it does.
The South Teton River is a smaller eastern Idaho tributary near Rexburg. It should be read as a local small-water option rather than a destination float river.
Its value is in short windows: clear water, modest flow, careful approaches, and enough shade or current to keep trout comfortable.
This page keeps the RiverReports and USGS 'South Fork Teton' flow language where needed, but uses South Teton River in the visible fishing guidance because that is the official-style IDFG waterbody name.
Target species
Yellowstone cutthroat trout
A conservation-sensitive native trout that requires careful rule checks and gentle handling.
Rainbow trout
Part of the local trout mix and often found where flow and cover are adequate.
Brook trout
Possible in tributary-style water, depending on reach and current IDFG records.
Reading the water
Clear modest flow
Best for short dry-dropper rigs, small nymphs, and careful bank approaches.
Low warm water
Usually a reason to fish early, shorten the session, or skip trout fishing entirely.
Muddy pulse
Wait for visibility to recover; small tributaries lose fishability quickly when stained.
Cool shoulder season
Can fish with nymphs and small streamers when rules and access allow.
Best seasons
Late spring
Fish only after checking tributary-season rules and current runoff conditions.
Early summer
Often the best mix of water and insect activity if temperatures remain safe.
Late summer
Condition-dependent because low warm water can stress trout.
Fall
A better low-pressure window when flows and rules line up.
Preferred flow source
SF Teton River near Rexburg
RiverReports is the preferred chart source when coverage exists. When a matching USGS gauge exists, keep it open as the official backstop for station data and current hydrograph context.
USGS data chart
Official USGS trend
Streamflow over the latest USGS reporting window.
Latest
390 cfs
Jun 3, 4 PM UTC
Weather
River weather report
Weather can change wading safety, road access, water temperature, hatches, and the best time of day to fish.
Live forecast loads as you reach this section
This keeps the report fast while still using the official National Weather Service forecast point.
Hatches and flies
Hatch chart and fly picks
Spring
Midges, BWOs, small caddis
Zebra midge, BWO emerger, caddis pupa
Early summer
Caddis, PMDs, small stones
Elk hair caddis, PMD cripple, small stone nymph
Summer
Terrestrials, caddis, attractors
Foam ant, beetle, small hopper, dry-dropper
Fall
BWOs, midges, small streamer windows
BWO emerger, zebra midge, olive bugger
Small-water dries
Elk hair caddis, parachute Adams, ant, beetle
The creek is clear and fish can be approached without spooking the whole run.
Light nymphs
Pheasant tail, zebra midge, perdigon, caddis pupa
Fish are holding in small buckets, shade, and undercut edges.
Mini streamers
Micro bugger, small leech, slim sculpin
Water is cool, slightly tinted, or low light gives trout cover.
Tactics
How to fish it
Move slowly and fish upstream or quartering upstream so the first cast into each small pocket is useful.
Keep rigs short and light. Overbuilt indicator rigs can spook more fish than they catch on this size water.
Check the IDFG rules first, especially tributary timing and cutthroat harvest restrictions.
If access is not obvious and public, do not treat a small riverbank as a walking trail.
Rigging
Rod, leader, and setup notes
A 3- or 4-weight rod is enough for most South Teton fly-fishing situations.
Use 4X through 6X tippet for small dries and light nymphs.
A dry-dropper rig with a single small beadhead is often more efficient than heavy nymphing.
Wet-wading may be tempting in summer, but temperature and private-land awareness still matter.
Access
Access and planning notes
Rexburg area
Orientation baseWade / float / trail
Town corridor / public-access check
When to pick it
Start here when you need to connect the gauge, rules, weather, and public entry before fishing.
Caution
Town proximity does not make every bank public.
Eagle Park vicinity
Public reference pointWade / float / trail
Park context / scout
When to pick it
Use it as a local reference when access and conditions need a quick reality check.
Caution
Park context is not a blanket pass to cross private banks or leave posted areas.
Signed crossings and public edges
Short small-water sessionsWade / float / trail
Road crossing / walk-wade
When to pick it
Pick them when parking, entry, flow, and rules are all clearly aligned.
Caution
Small water shows pressure fast, so avoid crowding or repeated passes through the same pocket.
The South Teton is not a broad public corridor everywhere. Legal entry and private-property awareness are central to the plan.
City and park references help with orientation, but anglers still need to verify where fishing access is allowed.
Small-water pressure adds up quickly. Rotate through short sections and avoid crowding obvious buckets.
Regulations
Check before fishing
Check Idaho Fish and Game rules for the South Teton River and Henrys Fork tributaries before fishing, including season dates and cutthroat harvest restrictions.
Primary base
Rexburg
Best day style
Small-water and urban-edge access planning with strong tributary-season and private-land caution
Check first
RiverReports trend, USGS 13055340, IDFG South Teton River rules, tributary season notes, and Rexburg weather
Safety
Low warm water, muddy pulses, private-land edges, road crossings, and conservation-sensitive cutthroat handling
Gear
Helpful gear for this water
3- or 4-weight rod
Matches the smaller water and short casts.
Compact dry-dropper box
Caddis, attractors, ants, beetles, and small nymphs cover most good windows.
Thermometer
Useful when low summer water could stress trout.
Light boots
Enough support for crossings and brushy banks without overbuilding the setup.
Nearby water
Other water to research
Backup logic
Low warm water
Move to the main Teton, Teton at Driggs, or South Fork Snake instead of stressing small-water trout.
Muddy pulse
Wait for clarity or choose a larger system that recovers more predictably.
Access is unclear
Skip the bank and use a confirmed public route rather than guessing at private frontage.
Tributary-rule uncertainty
Confirm IDFG South Teton and Henrys Fork tributary rules before rigging.
Teton River
Use the main-stem page when you want broader lower-valley access and a larger river plan.
Teton River at Driggs
A higher-valley Teton option with a different gauge and access pattern.
South Fork of the Snake River
A larger structured float backup when small tributary water is too low or warm.
FAQ
Fast answers
Is South Teton River near Rexburg fishable today?
South Teton River near Rexburg looks very fishable right now. The live score is 96/100, based on current flow, weather, public alerts, and the report's planning context. Recheck the linked gauge and forecast before leaving because conditions can change quickly after rain, heat, access changes, or flow swings.
What flow is best for South Teton River near Rexburg?
Clear, modest flows that keep enough depth in buckets without making crossings muddy or pushy.
When should I skip South Teton River near Rexburg?
Skip when tributary rules are closed, water is muddy, or low warm conditions would stress trout.
Is South Teton River near Rexburg safe to wade right now?
The fishability score is not a wading guarantee. Wade only where your chosen access has safe edges, clear footing, legal entry, and no forced crossings; high, rising, stained, or storm-affected water should be treated conservatively.
Is this the same as the main Teton River page?
No. This page covers the South Teton River near Rexburg, a smaller tributary-style water with different access and rule checks.
What gauge should I use?
Use RiverReports for the quick chart and USGS 13055340 SF Teton River near Rexburg ID as the official flow reference.
Why do the names South Teton and South Fork Teton both appear?
RiverReports and USGS use South Fork Teton flow language, while Idaho Fish and Game lists the water as South Teton River. The page keeps both clear.
Sources
Source set for this report
Reviewed 2026-06-02