See all 2 routes on Rock River
Wisconsin | Southern Wisconsin
Rock River
Janesville Centerway Dam portage to Afton Road Boat Launch
Check current paddling conditions for this Rock 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
Put in below Centerway Dam via the public portage path and take out at Afton Road Boat Launch. This is a short route with unusually strong current and urban/industrial hazards; the direct Afton gauge is used conservatively.
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
Centerway Dam public portage launchThe Centerway Dam portage is the required put-in; never run the dam or launch near the powerhouse outlets.
Take-out
Afton Road Boat LaunchRock County's access inventory describes Afton Road as a small-watercraft launch with parking but no camping or restroom service.
Plan this segment
Access caveats and watch for
Access caveats
- The Centerway Dam portage is the required put-in; never run the dam or launch near the powerhouse outlets.
- Rock County's access inventory describes Afton Road as a small-watercraft launch with parking but no camping or restroom service.
- The route passes public riverfront and industrial shoreline; do not land on restricted property or improvise a take-out at bridge or plant structures.
- Confirm the Afton launch and Centerway portage remain open before leaving; flooding, construction, or events can change access.
Watch for
- Fast current below Centerway Dam, narrow bridge gaps, strainers, and pillow currents at bridge pillars.
- Evonik chemical-plant shoreline, fences, restricted areas, and limited bailout options.
- High or rising water; do not launch when the Afton gauge is above the 6.5-ft slow-no-wake trigger or when local warnings are posted.
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 | Rock River at Afton, WI |
| 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 |
| Ideal range | Needs paddler reports |
| Known low-water floor | 2,350 cfs |
| High threshold | Not calibrated yet |
| Evidence strength behind the range | Local route guidance |
| Gauge observed | Checking |
| Paddle Today updated | Checking |
| Main source behind this score | Wisconsin River Trips Janesville Rock River gauge observation |
| 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.
- Exact routeCenterway Dam to Afton, 2.9 mi
Wisconsin River Trips documents the exact Janesville Centerway Dam-to-Afton Boat Launch trip, public portage launch, route length, and finish.
- Endpoint coordinates42.6850,-89.0256 to 42.6675,-89.0461
Rock County's official Rock River Water Trail inventory identifies Centerway Dam and Afton Road Boat Launch with DMS coordinates and access notes.
- Minimum-only gauge reference2,350 cfs / 5.04 ft observation
Wisconsin River Trips records the trip at 2,350 cfs / 5.04 ft and describes the current as fast; PaddleToday uses this as a conservative minimum-only reference, not an ideal range.
- Gauge-linked high-water policySlow-no-wake above 6.5 ft
Rock County applies a gauge-linked slow-no-wake rule downstream from Indianford Dam when USGS 05430500 exceeds 6.5 ft; this is used as a no-launch caution, not a paddling-quality threshold.
- Direct live gaugeUSGS 05430500 Rock River at Afton
USGS operates the direct Afton station and exposes continuous stage/discharge graphs.
Verify it yourselfCheck the source links
Use these links to double-check the gauge, route details, and access notes before you head out.
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
Compare another stretch on this river, or jump to nearby options before you pick a plan.
Quick answers
Rock River paddling FAQ
What water level is good for paddling Rock River?
Paddle Today watches Rock River at Afton, WI and uses 2,350 cfs as the conservative low-water floor for this route. The ideal range still needs more paddler reports.
Where does this Rock River route start and end?
This route starts at Centerway Dam public portage launch and ends at Afton Road Boat Launch, about About 2.9 mi on the water.
Is this Rock 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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