Wade34/100
Wading is the most sensitive plan today. Use protected edges only, avoid crossings, and downgrade quickly if clarity or current feels wrong.
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Fly fishing report · 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.
Check flow & weatherToday's river scoreHigh source confidence
54
Caution
Best option: Float.
A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.
Updated Jul 13, 11:17 PM UTCUsually refreshes about every 45 minutes
Recommended approachFloat
Mode scores adjust the river-wide score for the risks of wading, bank fishing, or floating.
Bank / edgeCheck
This report does not describe this as a primary mode. Verify legal access, depth, launches, and retreat options before planning around it.
Float · Best fit58/100
A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.
Confirm before you leave
Flow and weather right now.
Use the flow trend to confirm the score before you leave. Weather can change the safest and most productive fishing window.
Loading current flow and weather.
River strategy
Treat the South Teton as a small tributary with special timing rules, not as a copy of the main Teton River.
The South Teton near Rexburg can be useful when flows are clear, modest, and cool enough for careful trout fishing. The reach gets less attention than the main Teton, but that does not make it simple: tributary rules, low summer water, private edges, and small-water etiquette all matter.
- 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.
Why this score moved
HeatLowers score
The NWS forecast is near 96F. Without live water temperature, heat risk needs a conservative check.
Public alertUse caution
A heat alert is active near this forecast point, so the score is capped until water temperature and fish-handling risk are checked. NWS alert: Extreme Heat Warning issued July 13 at 2:50AM MDT until July 13 at 9:00PM MDT by NWS Pocatello ID.
Best mode nowUse caution
Float: A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.
FlowHelps score
USGS shows 66 cfs with a falling about 16% over about 6 hours trend. same-date USGS history (1983-2025, 41 readings) puts the normal middle range around 25 cfs-432 cfs. Flow is inside the same-date normal range, so weather, temperature, and access become the next checks.
SeasonHelps score
Early summer: Often the best mix of water and insect activity if temperatures remain safe.
Read the water
What changes the plan.
The South Teton is best as a short, careful small-water plan when the gauge is steady, water is cool, and access is obvious. It loses value during low warm summer periods, high muddy pulses, or any time the legal season and cutthroat rules do not support the trip.
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.
Field plan
Fish it with intention.
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.
Backup water
Use the main Teton, Teton at Driggs, or South Fork Snake when the South Teton is too low, warm, or access-limited.
Hatches & flies
Bring a flexible box.
TimingWhat to watchUseful flies
SpringMidges, BWOs, small caddisZebra midge, BWO emerger, caddis pupa
Reviewed pattern · report says “Zebra midge”Zebra MidgeLook for a very slim tapered thread body, evenly spaced contrasting wire rib, a small bead, and no tail or wing. The reviewed classic is black with silver wire and a silver bead. Red, olive, brown, glass-bead, jig-hook, resin-coated, or tailed forms must remain labeled variations rather than replacing the classic identity.See photos & how to fish it ↗
Reviewed family · report says “BWO emerger”Blue-Winged Olive PatternsBWO describes a hatch group, not one fly. Nymph, emerger, dry, cripple, and spinner profiles must stay separate because they occupy different parts of the water column.See family guide ↗+ 1 more reviewed guide in the Fly Box Early summerCaddis, PMDs, small stonesElk hair caddis, PMD cripple, small stone nymph
Reviewed pattern · report says “Elk hair caddis”Elk Hair CaddisLook for a tented elk- or deer-hair wing, clipped hair head, dubbed body, rib, and hackle palmered along the body. The body color should be labeled because tiers often match different natural caddis colors.See photos & how to fish it ↗
Reviewed family · report says “PMD cripple”Pale Morning Dun PatternsPMD names an insect group, not one fly. Pale nymphs, trailing-shuck emergers, upright or low-riding duns, cripples, and spent-wing spinners stay visibly separate.See family guide ↗+ 1 more reviewed guide in the Fly Box SummerTerrestrials, caddis, attractorsFoam ant, beetle, small hopper, dry-dropper
Reviewed family · report says “Foam ant”Ant PatternsAnt patterns can be foam, fur-bodied, winged, or sunken. The narrow waist and paired body lobes matter more than one material recipe.See family guide ↗
Reviewed family · report says “beetle”Beetle PatternsBeetle flies range from simple foam shells to hair-bodied and sunken forms. A rounded back and compact profile distinguish the family from ants and hoppers.See family guide ↗+ 1 more reviewed guide in the Fly Box FallBWOs, midges, small streamer windowsBWO emerger, zebra midge, olive bugger
Reviewed family · report says “BWO emerger”Blue-Winged Olive PatternsBWO describes a hatch group, not one fly. Nymph, emerger, dry, cripple, and spinner profiles must stay separate because they occupy different parts of the water column.See family guide ↗Reviewed pattern · report says “zebra midge”Zebra MidgeLook for a very slim tapered thread body, evenly spaced contrasting wire rib, a small bead, and no tail or wing. The reviewed classic is black with silver wire and a silver bead. Red, olive, brown, glass-bead, jig-hook, resin-coated, or tailed forms must remain labeled variations rather than replacing the classic identity.See photos & how to fish it ↗+ 1 more reviewed guide in the Fly Box 01
Move slowly and fish upstream or quartering upstream so the first cast into each small pocket is useful.
02
Keep rigs short and light. Overbuilt indicator rigs can spook more fish than they catch on this size water.
03
Check the IDFG rules first, especially tributary timing and cutthroat harvest restrictions.
04
If access is not obvious and public, do not treat a small riverbank as a walking trail.
Access & responsibility
Know the entry. Know the exit.
Check Idaho Fish and Game rules for the South Teton River and Henrys Fork tributaries before fishing, including season dates and cutthroat harvest restrictions.
Rexburg area
Use the city area as the orientation base, then confirm legal public entry before fishing.
Eagle Park vicinity
A Rexburg public-recreation reference point for local corridor planning, not a license to cross private land.
Signed road crossings and public edges
Fish only where access and parking are clearly legal.
Transparent sources
Check the facts behind the plan.
Last material review: 2026-06-02
Common questions
Before you leave.
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.