Pecatonica River – Mifflin
Date Paddled: April 21st, 2019
Put-in: Hwy G
Take-out: Cty Road E
Distance: 3.4 miles
Time: 3 hours 59 minutes (100 minutes would be more typical)
Gradient: 13.5' per mile (fast!)
Water Level: Pecatonica River at Darlington 340 CFS or 4.1'
The Pecatonica is a classic located in southwestern Wisconsin. I’ve paddled it several times before and it’s a nice river, but the downstream sections can be quite high and muddy during the spring. My running hypothesis is that for most rivers the further upstream you go, the better…less mud, better current, smaller banks, and more character. For the Pec, I wanted to test this to the extreme by launching near the tip-top of its watershed tree just upstream of Mifflin to scope out a previously unexplored section.
At the put-in off Hwy G, the Pecatonica was no more than a small creek. Navigable, but just. The first leg was sandwiched between large hills of corn to the south and a thin strip of woods to the north. This was a fast section with pool and riffle configuration…very reminiscent of the Big Green River.
The clarity here was great and revealed a red pebble substrate. If you do this paddle, keep an eye out for meteorite fragments. Nine years ago a meteorite created international buzz when it fell just north of Mifflin. Here is a map of the strewnfield which was directly over this very water trail.
The hilly cornfields were followed by a wooded bluff which featured the first of the trip’s many outcrops. The sandstone, woods, and rapids combined to create a cool corridor I really liked.
This was followed by a large sheep farm, whose occupants curiously watched me paddle by. A fence separated them from the river, but the sheep were pretty clever and knew how to work their way through the gaps. Following another brief corridor of outcrops, the river opened up again into open pasture…an attractive section very reminiscent of the nearby Blue River and Snow Bottom SNA.
The Livingstone Branch soon joined with the Main Branch and nearly doubled the flow rate. From then on, most of the rapids had much more padding, which was much appreciated. A highlight on this segment were the large gravel bars, while a lowlight were the huge exposed mud banks from decades of topsoil erosion. A long series of bluffs then forced the river suddenly to the east. The outcrops at the base of this ridgeline were quite striking. There was a mixture of sandstone and limestone on this trip, but here most were limestone and had fantastic texture.
I debated on taking out at Hwy G, but that would have cut the trip pretty short…so I continued on to Hwy E. This additional half mile formed a giant horseshoe and flowed past a large beef cattle farm. Erosion was a serious issue, but there were still scenic rapids and outcrops, with the best being just upstream of Hwy E.
In summary, this was a trip I really liked and gave five stars. It had all my favorite components (rapids + no logjam portages + outcrops + clear water + narrow). But I could see many paddlers disagreeing with my five star assessment because of its shallow depth and requirement for high flow rates.
Some ducks, some gobbling turkeys, an eagle, a mink, clams, turkey vultures, a red-tailed hawk, sheep, and many singing songbirds. The highlight was the huge schools of fish I saw…some of which looked like trout. A surprise as this is not officially a trout stream. In fact, I’ve paddled many trout streams and only the Big Green River rivaled this for number of fish.
Hwy G (first bridge) was a pretty easy bridge access IMO.
An alternate upstream put-in would be at Hwy X, which would add 4.2 miles to a trip. Beware that this would be an unexplored section and could be very shallow with some possible logjams (although I think it is pretty open). There are also likely some small outcrops. Hwy X is not an ideal bridge access as it is open, close to a home, and lacking in privacy.
I took out at Hwy E, which was a mediocre bridge access. Because of the long guardrail and rocky embankment, it will take some effort to pull your boat to your car. Best parking is SW of the bridge.
An alternate take-out 0.5 miles upstream is at Hwy 2 (second bridge). This is a much better bridge access, but if you take out here, you miss out on a neat section.
An alternate take-out 4.4 miles downstream is at Hwy A. This is a very good prospect with quick current, outcrops, and a state natural area. There might be a few minor logjams on this leg.
Shuttle & Rental Information:
The bike shuttle was very hilly (180′ of climbing) but is mercifully short at 1.7 miles. A hiking shuttle is certainly a viable option.
Hazards, Logjams and Current:
- Fence #1: Located by the sheep farm, this is super easy to get under.
- Fence #2: Located halfway into the trip, this consisted of a unique cable and float system. I was able to duck under, but it would be easy to portage if need be (it’s not electric).
- Fence #3: Located just upstream of the E bridge, there is a sagging cable across the channel. Not sure if electric, but I was able to easily duck under the left edge. This can be scouted from the bridge.
Logjams: None. There were 2-3 instances in which downed trees narrowed the channel, but I always felt it was easy to get through.
Current: Like many SW Wisconsin rivers, this has a pool and riffle configuration. Overall this was a fast trip that drops at an impressive 13′ per mile.
Rapids: There were countless riffles. For rapids, I didn’t note any more difficult than Class 1. But in high water, I could see some rapids being promoted to Class 2. This could be a fun whitewater river at very high levels.
River Depth and Navigability:
There is a gauge on the Pecatonica River, but is is about 35 miles downstream at Darlington. So…won’t be super accurate as the far upstream legs will rise and fall faster in reaction to rainfall. Note, parts upstream of the Livingston Branch are the most shallow. After that joins in, the rapids gain much more padding.
- < 300 CFS: I wouldn’t bother. Likely too shallow.
- 301-380 CFS: Pretty shallow…marginally doable, but many of the rapids will be extremely shallow. I did the trip at 340 CFS and really wished for more padding.
- 381-450 CFS: Likely a good depth…maybe some bumping, but not bad.
- 451-540 CFS: A high depth. This could be more of a whitewater trip and could be fun.
- 541-700 CFS: Very high depth…only suitable for experienced paddlers. Some banks may overflow at this depth.
- 701+ CFS: Maybe too high? I don’t know.
Alternate Pecatonica River Trips:
See the Overview Map for more details about the access options.
- Upstream of Hwy X: I think the river up here is too shallow to run.
- Hwy X to Hwy G1st: 4.2 miles. This section is a small creek and may need high water. Some logjams and probably small outcrops. Hwy X is not a great access and lacks privacy.
- Hwy G1st to Hwy E: 3.4 miles.
- Hwy G1st to Hwy G2nd/Mifflin: 2.9 miles. Great section with many rock outcrops and light rapids. Shallow, but becomes much deeper after the Livingston Branch joins up. Two fences, but easy to get past.
- Hwy G2nd/Mifflin to Hwy E: 0.5 miles. Short open section heavily grazed by nearby beef cattle. Some fun rapids and outcrops are on this segment. One fence to duck under (quite manageable).
- Hwy G2nd/Mifflin to Hwy A: 4.4 miles. An excellent prospect with good current, outcrops, a state natural area, and few logjams. Martin (reader comments) kayaked this section and wrote a nice summary here that you can read.
- Hwy A to Peniel Road/Hwy J: 1.7 miles. Maybe two outcrops, but I can see multiple logjams from satellite view though.
- Peniel Road/Hwy J to Jones Branch Road: 2.5 miles. First mile has congested woods and likely a handful of jams.
- Jones Branch Road to Powell Road: 3.1 miles. A wooded section that could have 3-5 jams, but also some potentially large outcrops and rapids.
- Powell Road to Oak Park Road: 8.0 miles. Very open section with no logjams. Highlights include green rolling hills, oak savannas, a few rapids, and one outcrop. Lowlights include four low fences.
- Powell Road to Hwy 151/Blackstone Cattle: 4.4 miles. The more scenic of the two sections with scenic hills and one outcrop. There are two low electric fences to duck under.
- Hwy 151 to Oak Park Road: 3.6 miles. This section had more corn and trees, and wasn’t as interesting but still was decent. There is one low electric fence and one super low barbed wire fence.
- Oak Park Road to Hwy O: 3.7 miles. Likely some logjams but also some outcrops at the end. Oak Park Road is muddy but doable put-in.
- Hwy O to Hwy G: 6.0 miles. Some scenic moments, but mud and logjams are detractions. Put-in and take-out are muddy.
- Hwy G to Darlington/Festival Grounds Park: 9.1 miles. A decent prospect. Note, while traditionally this leg is cleared of logjams for the annual canoe race, I’m not sure this has happened the past few years. As of 2020, there is a large logjam on this leg that requires a difficult portage up steep and muddy banks.
- Darlington/Black Bridge Park to Roller Coaster Road: 4.2 miles. A good prospect. Fun rapids located by the campground. Many put-in options in Darlington. Take-out is muddy and tricky.
- Roller Coaster Road to Walnut Road: 7.3 miles. While one of the nicer legs on the lower Pecatonica, the river has been too badly damaged by erosion to be an elite paddle. The highlight is a sandstone outcrop.
- Walnut Road to Riverside Road: 5.5 miles. Mediocre prospect flanked by a lot of farmland. Excellent put-in and take-out.
- Riverside Road to Hwy 78 Canoe Landing: 3.2 miles. Mud banks grow to epic proportions…might actually be a few logjams in this leg.
- Hwy 78 Landing to Larse Road: 6.2 miles. Straight, big, and muddy…not exciting, but there should be some decent rock outcrops halfway into the trip. Take-out may be challenging.
- Larse Road to Sargent Road: 4.3 miles. Meh. Put-in may be challenging. Should be a canoe ramp at take-out.
- Sargent Road to Hwy D/N: 4.6 miles. Flows partly through a SNA and by a valley ridge so might be interesting…might not…
- Hwy D/N to Hwy 11 Boat Ramp/Browntown: 8.8 miles. The East Branch comes in and doubles the river (now pretty big).
- Hwy 11 Boat Ramp/Browntown to Hwy B: 4.8 miles. Mediocre prospect. Take-out might be tricky because of a guardrail but I think it’s doable.
- Hwy B to Hwy M: 4.6 miles. Another mediocre prospect.. Put-in is also mediocre…take-out might be bad.
- Hwy M to West Winslow Road Boat Landing: 2.9 miles. Mediocre prospect…mostly in Illinois now.
- West Winslow Road Boat Landing and Beyond: The rest of Illinois I won’t cover. For more info, see Paddling Illinois by Mike Svob.