See all 8 routes on South Fork Snake River
Idaho | Eastern Idaho / Heise
South Fork Snake River
Byington to Heise Bridge
Check current paddling conditions for this South Fork Snake River route, including water level, recent gauge trend, weather, and route details.
Route location
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Need to know
Why this call
Conditions
Gauge history and hourly forecast
The top card is the quick read. This lower section keeps the longer gauge trend, gauge context, and hourly forecast together.
Gauge detail
Gauge history & hourly forecastDetailed view
Gauge
Recent trend
Checking preferred range.
Checking trend.
Gauge source
--Checking timestampMN DNR provides the current paddling level here, but not chart-ready recent samples.
Weather
Hourly forecast
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Next 8 hours
Short-route forecast
Checking the next several hours.
Route overview
Quick facts and what's next
Distance, difficulty, shuttle basics, and the near-term outlook before you commit to the drive.
Quick facts
Plan ahead
Upcoming outlook
These are early planning reads. Re-check live conditions before you commit to the drive.
Waiting on forecast.
Waiting on forecast.
Plan
Plan your trip
Launch points, shuttle details, distance, and access notes.
Route logistics
Access and shuttle
A short 2.8-mile lower-canyon float from the developed Byington ramp to Heise Bridge.
Prepare this trip
Take the plan with you
Download the canonical route, add a calendar hold, or send a simple float plan to your group.
Put-in
Byington Boat AccessUse only the named public launch or landing; a nearby bank, bridge shoulder, fishing easement, or private campground is not substitute access.
Take-out
Heise Bridge Boat AccessConfirm current closures, fire restrictions, seasonal gates, parking capacity, fees, launch condition, and Idaho invasive-species requirements before travel.
Plan this segment
Access caveats and watch for
Access caveats
- Use only the named public launch or landing; a nearby bank, bridge shoulder, fishing easement, or private campground is not substitute access.
- Confirm current closures, fire restrictions, seasonal gates, parking capacity, fees, launch condition, and Idaho invasive-species requirements before travel.
- Private banks are common. Do not land, scout, portage, or camp outside a signed public site or manager-designated corridor.
Watch for
- Dry Beds Canal diversion
- current fire-area land status
- swift current at Heise
Route gallery
See this route on the water
Photos help show what the access looks like and what the route actually feels like on the water.
Score & sources
Why this score
See the gauge, weather, and source notes behind today's call.
Why this scoreToday's evidence strength is checking
Evidence strength mostly comes down to three things: how direct the active gauge is, how clear the range is, and how fresh the data is.
- Checking evidence-strength notes.
- Checking evidence cautions.
Data behind the scoreGauge, thresholds, and timing
These are the live readings and threshold notes behind today's score.
| Gauge site | Snake River near Irwin, ID |
| Discharge | Checking |
| Gauge height | Checking |
| 24h trend | Checking |
| 24h change | Checking |
| Current band | Checking |
| Rain last 24h | Checking |
| Rain last 72h | Checking |
| Air temp | Checking |
| Water temp | Checking |
| Wind | Checking |
| Gusts | Checking |
| Rain timing | Checking |
| Target band | 6,000 cfs to 8,000 cfs |
| Low threshold | 1,500 cfs |
| High threshold | 15,000 cfs |
| Evidence strength behind the range | Official and local sources |
| Gauge observed | Checking |
| Paddle Today updated | Checking |
| Main source behind this score | RiverBrain Palisades Dam-Lorenzo 1,500-15,000 cfs band; 6,000-8,000 cfs ideal band derived around the published 7,000 cfs average |
| Gauge source | Checking |
| Weather source | Checking |
| Rainfall source | Checking |
NotesWhat to know before you go
These notes cover the access details, route quirks, and source caveats most likely to matter once you get there.
- Official route corridorByington to Heise Bridge; 2.8 river miles
BLM South Fork Snake River boating guide identifies the endpoint chain, river miles, or managed float corridor.
- Public access controlByington Boat Access to Heise Bridge Boat Access
Coordinates represent named public ramps, bank launches, park landings, or an explicitly described staging point.
- Direct live gaugeUSGS 13032500 - Snake River near Irwin, ID
Gauge is on the named waterbody and supplies context only.
- Threshold postureGauge-linked range used for live scoring
The cited route guidance is tied to this gauge and reach; hazards, closures, weather, and local inspection still override the score.
- Safety and land managementCurrent manager notices override this record
Cold, swift water, standing waves, whirlpools, wood, bridge piers, gravel bars, and diversions require active boat handling and a worn PFD. Palisades releases can change current and channel choice; use only designated launches and check the current BLM advisories before departure. BLM directs boaters to the north bank to avoid the Dry Beds Canal headgate, which captures nearly half the river.
- Camping classificationnearby_basecamp
Day trip; no camping at Byington. Use a currently open designated campground outside the route corridor.
- Image decisionSnake River Idaho regional context photograph
Approved route-area or same-river context; it does not depict every endpoint or current conditions.
- Overlap decisionRetained as a distinct access-to-access itinerary
Adjacent cards use different public endpoints and provide a different trip length, hazard set, skill tier, or operating boundary.
Verify it yourselfCheck the source links
Use these links to double-check the gauge, route details, and access notes before you head out.
- BLM South Fork Snake River boating guide
- Official access/map control
- USGS 13032500 monitoring location
- USGS 13032500 current conditions
- RiverBrain Palisades Dam-Lorenzo 1,500-15,000 cfs band; 6,000-8,000 cfs ideal band derived around the published 7,000 cfs average
- Snake River Idaho regional context photograph
- Idaho boating and invasive-species requirements
Paddler reports
Recent notes from paddlers
A few quick notes from people who were on this route recently.
Reports
Paddler reports
See recent photos and notes from people on the route.
Share your trip
Keep exploring
More routes to check next
Compare another stretch on this river, or jump to nearby options before you pick a plan.
Quick answers
South Fork Snake River paddling FAQ
What water level is good for paddling South Fork Snake River?
Paddle Today watches Snake River near Irwin, ID and treats 6,000 cfs to 8,000 cfs as the target band for this route, with weather and recent trend included in the final score.
Where does this South Fork Snake River route start and end?
This route starts at Byington Boat Access and ends at Heise Bridge Boat Access, about 2.8 river miles on the water.
Is this South Fork Snake River route good for beginners?
This is listed as a moderate route. Expect more planning than an easy float, and use the live score, route notes, and source links before committing.
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Access, hazards, wood, and shuttle details change. Send a quick correction if something looks off.