See all 5 routes on Henrys Fork
Idaho | Eastern Idaho / Island Park
Henrys Fork
Box Canyon Campground to Last Chance Boat Ramp
Check current paddling conditions for this Henrys Fork 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 4-mile Class II tailwater float below Island Park Dam through the Box Canyon basalt corridor to the developed Last Chance ramp.
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
Box Canyon Boat RampUse only the named public launch or landing; a nearby bank, bridge shoulder, fishing easement, or private campground is not substitute access.
Take-out
Last Chance Boat RampConfirm 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
- Island Park Dam boundary
- swift confined current
- limited shoreline exits
- Last Chance mandatory take-out
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 | Henrys Fork near Island Park, 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 | 1,000 cfs to 2,000 cfs |
| Low threshold | 1,000 cfs |
| High threshold | 2,000 cfs |
| Evidence strength behind the range | Official and local sources |
| Gauge observed | Checking |
| Paddle Today updated | Checking |
| Main source behind this score | Upper Snake basin inventory and current Box Canyon guidance: 1,000-2,000 cfs |
| 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 corridorBox Canyon Campground to Last Chance Boat Ramp; About 4 river miles
Idaho Upper Snake River Basin boating inventory identifies the endpoint chain, river miles, or managed float corridor.
- Public access controlBox Canyon Boat Ramp to Last Chance Boat Ramp
Coordinates represent named public ramps, bank launches, park landings, or an explicitly described staging point.
- Direct live gaugeUSGS 13042500 - Henrys Fork near Island Park, 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
Launch only below Island Park Dam at the Box Canyon access; never approach the dam structure or enter closed shoreline areas. The confined basalt canyon has fast current, deep water, and limited walk-out options. Use a properly fitted PFD, cold-water protection, and a craft appropriate for Class II water. Use 1,000-2,000 cfs as a conservative operating band, check the live gauge and dam-release notices, and take out at Last Chance before the downstream Railroad Ranch reach.
- Camping classificationnearby_basecamp
Box Canyon Campground and nearby Forest Service sites provide a basecamp when open; Last Chance is a day-use take-out, not an on-route overnight site.
- Image decisionHenrys Fork / Henrys Lake watershed 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.
- Idaho Upper Snake River Basin boating inventory
- Official access/map control
- USGS 13042500 monitoring location
- USGS 13042500 current conditions
- Additional threshold support
- Henrys Fork Foundation upper-river access map
- Box Canyon flow and route guidance
- USGS Henrys Fork near Island Park direct gauge
- How's Your River Henrys Fork access/run index
- Henrys Fork / Henrys Lake watershed 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.
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Keep exploring
More routes to check next
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Quick answers
Henrys Fork paddling FAQ
What water level is good for paddling Henrys Fork?
Paddle Today watches Henrys Fork near Island Park, ID and treats 1,000 cfs to 2,000 cfs as the target band for this route, with weather and recent trend included in the final score.
Where does this Henrys Fork route start and end?
This route starts at Box Canyon Boat Ramp and ends at Last Chance Boat Ramp, about About 4 river miles on the water.
Is this Henrys Fork 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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