Wisconsin | South Central Wisconsin

Beaver Dam River

Cotton Mill Park to County Road J

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Difficulty moderate American Whitewater rates the reach Class I-II. Keep it out of beginner recommendations unless the gauge is in the low-to-normal band, wood is known passable, and paddlers are comfortable with swift current, small weirs, strainers, and low bridges.
Permits None noted No route-specific permit is known. Follow posted city-park rules at Cotton Mill Park and do not block the County Road J landing, driveway, gate, or bridge shoulder.
Camping Day trip No on-route camping is documented. Treat this as a short day route with a moving-water safety margin.
Season Mar-Nov Spring and fall are the cleaner targets. Summer can work during controlled releases, but warm-water algae blooms, erratic dam operations, and storm debris should lower confidence quickly.

Dial in the shuttle, distance, and access.

Use this section once the route looks viable and you need to turn it into an actual trip plan.

Access, shuttle, and map

Launch at Cotton Mill Park just below the Beaver Dam Lake dam and finish at the improved County Road J landing. This route has more gradient and small waves than most south-central Wisconsin paddles, so the live gauge, recent wood reports, and same-day dam behavior matter more than mileage.

Start

Put-in

Cotton Mill Park Open map

Cotton Mill Park is the clean public start, but the launch is close to the dam and the first small weir. Scout the first bridge/drop before committing.

Finish

Take-out

County Road J landing Open map

County Road J now has a dedicated landing and parking area per recent Miles Paddled reports, but it is still road-adjacent. Do not block the nearby gate or private access.

Pulling access map tiles. Usually under 5 seconds.

Access caveats

  • Cotton Mill Park is the clean public start, but the launch is close to the dam and the first small weir. Scout the first bridge/drop before committing.
  • County Road J now has a dedicated landing and parking area per recent Miles Paddled reports, but it is still road-adjacent. Do not block the nearby gate or private access.
  • A controlled release can make the route runnable, but abrupt dam-gate changes can also make the river rise quickly. Check the gauge shortly before launching and again at the put-in.

Watch for

  • Class I-II waves, small weirs, and pushy downtown current, especially around Beaver Street, Center Street, Mill Street, and the Kraft corridor.
  • Strainers and fresh wood between Davis Street and Cooper Street, around the Kraft corridor, and in the wooded middle reach.
  • Low bridge clearance, blue-green algae warnings near the impoundment, wastewater-plant context, cold water, and wind on the slow marshy finish.

Check the data behind today's call.

Use this section when the page shows stale data, limited confidence, or a call you want to verify before driving.

Read quality
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Data confidence mostly comes down to three things: how direct the gauge is, how clear the range is, and how fresh the data is.

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Tomorrow and weekend

This is a cautious early look. If the data is too thin, we leave it out.

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Weekend Checking

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Gauge, thresholds, and timing

These are the live readings and threshold notes behind today's score.

Gauge site Beaverdam River at Beaver Dam, WI
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Target band 30 cfs to 140 cfs
Low threshold 29 cfs
High threshold 211 cfs
Data confidence behind the range Local route guidance
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Paddle Today updated Checking
Main source behind this score Wisconsin River Trips Beaver Dam River gauge guide
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What 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 support Beaver Dam - 5.8 miles

    Dodge County lists the Beaver Dam River as a county waterway route and describes the same downtown-to-Hwy-J trip character, ending where the rapids fade after Highway J.

    Source

  • Direct gauge and reach USGS 05425912 / 5.35 miles / Class I-II

    American Whitewater lists Cotton Mill Park to CTH J as a 5.35-mile Class I-II reach using the Beaverdam River at Beaver Dam gauge.

    Source

  • Primary app range 30 to 140 cfs

    Wisconsin River Trips treats 30-90 cfs as the great target band and 91-140 cfs as high-side but good if rapids are the priority; the app uses that combined 30-140 cfs as the guarded normal window.

    Source

  • High-water ceiling 211+ cfs too high for broad use

    Wisconsin River Trips says strainers and fast current become annoying at 141-210 cfs and that 211+ cfs becomes obnoxious and partly dangerous; American Whitewater also warns not to exceed the recommended maximum because bridges can become difficult or impossible.

    Source

  • Endpoint coordinates Cotton Mill Park 43.45456, -88.84298; County Road J 43.39397, -88.86828

    Miles Paddled publishes GPS coordinates for Cotton Mill Park and the County Road J take-out, and its 2026 comment confirms a dedicated parking and landing area at County J.

    Source

  • Put-in authority City park at 200 Haskell Street

    The City of Beaver Dam lists Cotton Mill Park as a public city facility on the easterly edge of Beaver Dam Lake with fishing and basic park amenities.

    Source

  • Hazards Dam releases, strainers, low bridges, algae

    American Whitewater documents strainer and low-bridge risk, blue-green algae warnings, and recent 2024-2026 trip reports with portage/wood updates; Wisconsin River Trips warns that dramatic dam releases can occur suddenly.

    Source

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Beaver Dam River paddling FAQ

What water level is good for paddling Beaver Dam River?

Paddle Today watches Beaverdam River at Beaver Dam, WI and treats 30 cfs to 140 cfs as the target band for this route, with weather and recent trend included in the final score.

Where does this Beaver Dam River route start and end?

This route starts at Cotton Mill Park and ends at County Road J landing, about 5.5 to 5.8 mi on the water.

Is this Beaver Dam 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.

See something outdated?

Access, hazards, wood, and shuttle details change. Send a quick correction if something looks off.