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South Dakota | Akron / Westfield Border
Big Sioux River
Ron Wilmot River Access to IA-3 / SD Hwy 50
Check current paddling conditions for this Big Sioux 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
Launch from Ron Wilmot River Access and paddle the lower Big Sioux border-river segment to the IA-3 / SD Hwy 50 concrete launch. USGS 06485500 at Akron is just upstream, so use that gauge as the same-day check and treat 400 cfs as the conservative low-water floor.
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
Ron Wilmot River Access concrete launchGFP's Jay Heath access layer marks Ron Wilmot as Parking Yes, Launch Yes, Camping No, and a concrete launch surface managed by Plymouth County Conservation Board; MyCountyParks separately confirms a boat ramp and parking for Big Sioux River access.
Take-out
IA-3 / SD Hwy 50 concrete launchGFP's layer marks IA-3 / SD Hwy 50 as Parking Yes, Launch Yes, Camping No, and a concrete launch surface managed by Plymouth County Conservation Board.
Plan this segment
Pulling access map tiles. Usually under 5 seconds.
Access caveats and watch for
Access caveats
- GFP's Jay Heath access layer marks Ron Wilmot as Parking Yes, Launch Yes, Camping No, and a concrete launch surface managed by Plymouth County Conservation Board; MyCountyParks separately confirms a boat ramp and parking for Big Sioux River access.
- GFP's layer marks IA-3 / SD Hwy 50 as Parking Yes, Launch Yes, Camping No, and a concrete launch surface managed by Plymouth County Conservation Board.
- GFP maps River's Bend Wildlife Area and Lazy H Campground as campground records rather than launch-supported Big Sioux river accesses. Treat them only as separate nearby camping support.
- Do not substitute IA-12, Missouri River Boat Club, Sioux City, the Missouri confluence, private ramps, fee/private accesses, or informal banks as launch or take-out points without separate access and hazard review.
Watch for
- Shallow bars, scraping, and slow current when the Akron gauge is below the 400 cfs community floor.
- Wood, strainers, bridge debris, bank mud, fences, or wire after rain or high water.
- Agricultural and urban water-quality concerns on the lower Big Sioux, especially after heavy rain or visible runoff.
- Open border-river wind exposure, limited public egress, muddy or flood-shifted landings, and a no-extension boundary at IA-3 / SD Hwy 50.
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.
No approved route photos yet
Start the gallery with shots of the access, river character, or any detail that helps paddlers know what this run actually looks like.
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 | Big Sioux River at Akron, IA |
| 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 | 400 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 | Sioux Empire Paddlers Big Sioux River Akron flow guidance |
| 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 water-trail segmentRon Wilmot to IA-3 / SD Hwy 50; 5.4 mi
South Dakota GFP's Jay Heath Canoe and Kayak Trail access layer marks Ron Wilmot as the upstream concrete launch and stores the downstream segment as 5.4 water miles toward the next launch-supported IA-3 / SD Hwy 50 access.
- Public put-inRon Wilmot River Access concrete launch
The GFP Jay Heath access layer marks Ron Wilmot as Parking Yes, Launch Yes, Camping No, concrete launch surface, and Plymouth County Conservation Board-managed. MyCountyParks independently says Ron Wilmot River Access has a boat ramp and parking for Big Sioux River access.
- Public take-outIA-3 / SD Hwy 50 concrete launch
The GFP Jay Heath access layer marks IA-3 / SD Hwy 50 as Parking Yes, Launch Yes, Camping No, concrete launch surface, and Plymouth County Conservation Board-managed.
- Upstream corridor gaugeUSGS 06485500
USGS operates the Big Sioux River at Akron, IA, just upstream of the selected segment. During implementation review, Water Services returned 521 cfs and 4.99 ft at 2026-08-07 18:00 CDT.
- Low-water floor400 cfs minimum-only
Sioux Empire Paddlers lists Big Sioux River Akron Iowa as ideal above 400 cfs. The app uses that lower-corridor guidance as a minimum-only floor and does not infer an upper cutoff.
- Camping statusNearby basecamp only
GFP's access layer marks the selected Ron Wilmot and IA-3 / SD Hwy 50 launch records as Camping No. Nearby River's Bend Wildlife Area and Lazy H Campground support separate basecamp options, but route copy does not infer endpoint, informal, or private-bank camping.
- Access distinctionRiver's Bend and Lazy H are not route launches
GFP maps River's Bend Wildlife Area and Lazy H Campground as campground records rather than launch-supported Big Sioux river accesses. They are treated only as separate nearby camping support.
- Safety contextFence, wood, water-quality, wind, private-bank, and non-extension context
GFP warns that fences cross many navigable South Dakota streams, and Friends of the Big Sioux points paddlers toward current river access and water-quality resources. Treat this as a bounded Ron-Wilmot-to-IA-3 / SD-Hwy-50 day segment.
- Gallery imageNo image selected
Bounded review of SD GFP, Sioux Empire Paddlers, Plymouth County/MyCountyParks, Wikimedia Commons, and same-route image leads did not find a clearly rights-clean exact-route reusable gallery asset.
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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More routes to check next
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Quick answers
Big Sioux River paddling FAQ
What water level is good for paddling Big Sioux River?
Paddle Today watches Big Sioux River at Akron, IA and uses 400 cfs as the conservative low-water floor for this route. The ideal range still needs more paddler reports.
Where does this Big Sioux River route start and end?
This route starts at Ron Wilmot River Access concrete launch and ends at IA-3 / SD Hwy 50 concrete launch, about About 5.4 mi on the water.
Is this Big Sioux River route good for beginners?
This is listed as an easy route, but conditions still matter. Check today's score, water level, weather, and access notes before you go.
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