San Joaquin, CA

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3. Horseshoe Bend (Redinger Dam to Kerckhoff Reservoir)

Class III-IV(V)
6 Miles
Avg Gradient 33 fpm
Max Gradient 50 fpm

Scenic Section


Scenic Section
Photo of Eric Burke by Paul Martzen taken April 16, 2005 @ 1,600 cfs



River Description

Horseshoe Bend is a beautiful section of river that has seen relatively little boating use in the past. It only has boatable flows during periods of spill; typically late Winter and Spring of an average to high water year. Many years there is no spill at all and therefore no boatable flows. Scheduled weekend recreation releases will happen in the future if certain fishery studies allow it. In the meantime SCE started providing real time flow information in the summer of 2006, which will allow boaters to use this reach whenever there is boatable flow.

The river character is classic pool drop, with long pools separating relatively short steep drops. The streambed is a deep granite trench and many rapids are formed by large boulders. Most rapids, even the small ones, have distinct horizon lines, which hide any view of the correct route until you are just about entering the rapid or have in fact committed to the rapid. Low cliffs or sculpted boulders form much of the shoreline, but all rapids are easily scouted from shore. There are a few small beaches along the length and one large beach at about the halfway point. It is a very pretty section of river.

Time required: One can enjoyably spend all day, but fast trips are also feasible. A recent kayak trip at 2000 cfs with 3 boaters, doing 4 scouts, two portages, 1 swim, and numerous rolls, took 2 hours and 15 minutes from put-in to take-out.

The Horseshoe Bend Trail is on river right. It comes close to the river in a couple spots, but usually it is several hundred yards up on the hillside. Sometimes its path is obvious but in many other areas it is faint. The downstream end of this trail starts where the road to the powerhouse is gated. The upstream end starts from a level area a mile before you reach Willow Creek. At the upstream end, there is a sign for the trail and a dirt road leading to a power tower. Vegetation in the area is grasslands, brush, oaks and some Digger Pines.

Getting there: From Fresno, take Highway 168 (or highway 41 to Friant Rd to Auberry rd), to Prather. Continue a couple miles then turn left onto Auberry road and go to the town of Auberry. In town veer left at the school onto Powerhouse Rd. Drop down to Kerchoff reservoir, cross the bridge and immediately turn left into a parking area which is the take-out. Allow 1 hour and 10 minutes from Fresno. Continuing to the put-in, cross the highway to a small but paved road. Drive 4.5 miles to Willow Creek below Reddinger dam.
From Madera take highway 145 to Friant, to Auberry rd, to Prather and Auberry, etc. See this Google Map.

Put in: Is easiest at Willow Creek just downstream of the dam rather than at the dam itself. Drive on a dirt road on the left side of the creek to where a huge pipe comes out of the hill and crosses the creek. Duck under the pipe and follow the trail out to the main river. Kayakers often just launch into the creek itself and fight through the trees on the way to the river. Trees are thick in the creek just below the bridge and again very thick at the mouth. A new trail is to be constructed someday, but the final plan has not been approved by the forest service yet. 

Sept 2008 trail status report to FERC.

  Topozone map. google map

You can launch near the dam, by carrying down a trail that leads to a gauging station.  Launching here allows you to run a big serious drop in a narrow gorge.

Take out any where at Kerchoff Reservoir. There is a large turnout on the northwest side of the highway bridge and a decent take out underneath this bridge. It is a short carry from the water up to the road, but rafters may wish to paddle across the reservoir to good beaches with car access. The shuttle is about 4.5 miles on a paved one lane road. Allow 10 to 15 minutes driving time each way. Topozone map. google map


Toilets and primitive campsites are available at Smalley Cove on Kerchoff reservoir. Toilets are also available at the boat ramp on Reddinger Reservoir, not far past the dam. There is an area suitable for primitive camping at the put-in, but on the north side of the paved road, up a short dirt road. There is a grocery store and several decent resteraunts in the nearby town of Auberry. There are more stores and restaurants at the shopping mall in Prather, at the junction of Auberry Rd. and Highway 168.

FERC Information:   Reddinger Reservoir and Big Creek #4 powerhouse operate under FERC license # 2017 reissued in December 2003.

Threats to the River:
The downstream area of the San Joaquin is presently under study for several potential large dam and reservoir sites which could also affect this section of the river. See: Upper San Joaquin Basin Storage Investigation Three sites are under serious investigation! One site is about one mile upstream of the confluence with Finegold Creek and could have a maximum size of around 2.1 million ac/ft. Another site is downstream of Temperance flat and could be as big as 2.7 million ac/ft. The last site is upstream of Squaw Leap about halfway through the Patterson Bend section. This would only contain 1.4 million ac/ft. Despite their size maximum annual yield is only 200,000 ac/ft. All of these reservoirs will bury the Patterson Bend section and will also bury some or all of the Horseshoe Bend section. Maps from the study showing the sizes of the proposed reservoirs are linked below.

A speech by Gary Bobker of the Bay Institute, gives some arguments against building new dams at these locations.



Paul Martzen
Guidebooks: Cassady & Calhoun, Holbek & Stanley

Chris Labounty comments:

Ran Horseshoe on Sunday (May 29, 2005) with a stomping flow (10,000 cfs). Reddinger had one door full open, and a second maybe half way. Big water, confusing currents, and random whirlpools that liked to try to turn you sideways or backwards right above holes. I can't recall a time I've ever had to fight so hard to catch eddies, but I scouted about 5 times. Scouting Big Dog was near impossible, as the big river right eddy appeared to be at a higher elevation than the current going past. There was one enormous hole a little ways before Little Dog that took most of the right half of the river. An exciting run to say the least, and I look forward to doing it again at a downshifted flow. Interestingly, later in the afternoon, they had shut off the second door of the damn and took things down a notch from the looks of the 1st rapid.

Local Clubs:
For more information on this and other local paddling areas, please feel free to contact these local clubs: SJPaddlers, NEW Kayak Club, or Gold Country Paddlers.

Online:
You can get more information from California's Whitewater Community at boof.com.


StreamTeam Status: verified
Last Updated: 2008-10-01 13:23:31

Search Results

Photos/Videos 1- of 30

Horseshoe Bend, San Joaquin


Horseshoe Bend, San Joaquin  San Joaquin CA
(7.80KB .jpeg)

San Joaquin proposed reservoir: mile 286


San Joaquin proposed reservoir: mile 286  San Joaquin river CA
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10,000 cfs


10,000 cfs  San Joaquin CA
(71.94KB .jpeg)

First Falls at 1,000 cfs


First Falls at 1,000 cfs  San Joaquin CA
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Raft above Test Rapid at 1,600 cfs


Raft above Test Rapid at 1,600 cfs  San Joaquin CA
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Raft in Test Rapid at 1,600 cfs


Raft in Test Rapid at 1,600 cfs  San Joaquin CA
(84.64KB .jpeg)

River Board in First Falls


River Board in First Falls  San Joaquin, Horshoe Bend CA
(87.12KB .jpeg)

Raft in Little Dog


Raft in Little Dog  San Joaquin, Horshoe Bend CA
(82.67KB .jpeg)

Scenic Section


Scenic Section  San Joaquin, Horshoe Bend CA
(93.60KB .jpeg)

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Gauge Description:

Flow in Horseshoe Bend is a combination of spill from Reddinger, now posted by Edison as San Joaquin above Willow Creek and the flow in Willow Creek. Willow Creek often contributes 100 cfs or so early in the season, but decreases to almost nothing by summertime. Willow sometimes contributes huge amounts during big winter rainstorms. Click on the "Show List" button and you can see flows for some other river reaches in the basin as well as reservoir elevations. See also Dreamflows for this flow and many other rivers.

There is a staff gauge behind a rock at the downstream side of the mouth of Willow Creek. The staff measures increments of 500 cfs, up to 5000 cfs.

Horseshoe Bend will occasionally have flows in the winter and early in the Spring from low elevation runoff. It will also receive any spill from Mammoth Pool, which usually occurs if the Snow pack in the basin is 100%. The probability increases as the snow pack rises above 100%. Depending on weather patterns, spill can sometimes occur with less snow pack.
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icon of message No guide books for this stream. If you know of a book that describes this stream please contact and advise the StreamTeam member for this run.

User Comments

2006-07-31 01:12:28 (846 days ago)
Daniel LundbergDetails
I just did an evening run on the Horseshoe Bend section of the San Joaquin River on 7/26/06 at 2400 cfs. I ran it with Dan and Evan, and I have to say they did a great job showing me the lines. I must also say I was quite nervous. I was happy to discover that all the holes that I encountered, or watched those guys try to punch through and then get flipped, were all washing out. There were a few really large and nasty holes, but they were easy to see and avoid as you paddled down the rapids. The bottoms of most of the rapids were made up of these crazy lateral waves that were bouncing off the sides of the canyon, along with some very strong boils. This all helped add to my excitement and nervousness. Once I got over my fears, I was able to enjoy this incredibly scenic river that included some beautiful granite gorge walls. We also saw three large owls near the put-in, a first for me, after living in the area for seven years. I uploaded pictures and videos for your enjoyment, and I hope it encourages you all to take a trip down this section of river.
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Rapid Summary

Mile Rapid Name Class Features (Legend)
0.0Reddinger Dam
0.1Gauge Trail Put-inPutin Access
0.2Reddinger Gorge5.0
0.5Mouth of Willow CreekPutin
1.4Study rapidIV
2.0Scenic CorridorIII
2.4Two Holes HidingIV
2.8Long and ShallowIV
3.3Backbone Creek
3.7Four HolesIV
3.8Little DogIV
4.1Big Dog5.0Video
4.2No NameIII+
4.4ConstrictionIII+
6.0Powerhouse HoleIII+
6.2Big Creek #4 PowerhouseIIAccess
7.2Bridge at Kerchoff ReservoirTakeout

Rapid Descriptions

Reddinger Dam
Reddinger Dam diverts 3,600 cfs to the Big Creek #4 Powerhouse and controls flows into Horseshoe Bend. One gate open is typical. Two gates open means really big water and only the hard core will want to challenge themselves.

Some people do or have launched just downstream of the dam, but getting to the river requires descending steep and very exposed slabs that are very wet and very slimy. 

Gauge Trail Put-in

This is the best put in option for paddling through the Reddinger Gorge.    Look for the gated road leading down towards the base of the dam.    A sign on the gates says, "Dam #7"  The trail starts just outside the gate and leads straight down the hill.   The trail is not in great condition but it is discernable.   There are some stairs and ladders near the bottom. 



Reddinger Gorge (Class 5.0, Mile 0.2)
A moderate rapid leads to a very big rapid, class 4+ to 5. It can be portaged over boulders on the left

Mouth of Willow Creek
This is the standard and easiest put-in location to use. Kayakers often launch into the creek at the road bridge and boat the .35 of a mile to the river. Others park by the pipe on creek left and carry 0.2 mile to the river.
Look for the gauging staff (photo) behind a rock on the downside of the creek mouth.
There is often a thick growth of bushes across the river downstream of the mouth. They grow in the shallow sediment that gets carried down Willow Creek and deposited in the relatively wide and slow main river channel.


Study rapid (Class IV, Mile 1.4)

After a mile of flatwater, small holes and ledges, cliffs develop, especially on the left. A group of large boulders block the channel. To scout, take out upstream on the right. At low flows the center slot is clean and the right side develops a route. At high flows the left side cleans up while the center develops into an ugly hole.



Scenic Corridor (Class III, Mile 2.0)
Granite cliffs rise on both sides of the river, creating a long scenic section. A series of moderate rapids are scattered throughout. Many of these rapids have holes to avoid, and most create weird and strong hydraulics in the tail water. There can be fantastic play spots at some flows.


Two Holes Hiding (Class IV, Mile 2.4)

Boulders on river right block your view of this sharp right turn. Rocks in the middle of the entrance force boaters to go far left or down a steep drop on the right. The current pushes boats towards a big hole on the left. Paddle hard to get right. An equally large hole hides in the middle in the tail waves below. Scout or portage on river right. Good recovery pool below. A few boaters have had deep dark swims here after being separated from their gear. (mileage is an estimate)



Long and Shallow (Class IV, Mile 2.8)
The river banks spread out and flatten out to some extent in this area. There is a blocky island in the middle with an overflow channel on the left and the main channel on the right. Obvious obstructions under the surface block the center and right at the top. Boaters must aim just to the left of center. Ledges and obstructions on the left become apparent as you approach, which forces one to thread a narrow line. One can wander farther a field if they wish to punch small ledge holes and hit rocks. If one tips over in this rapid, expect to hit rocks. Tuck up and stay in your boat till it cleans up. A good size hole does wait in the middle right of the tail waves. Small rapids lead to the far portion of the "Bend".

Backbone Creek

The river turns right into the bottom of the horseshoe and heads west. The small Backbone Creek comes in on the left and forms the nicest sand bar on the section. Flat water allows one to enjoy the beautiful cliffs and scenery for the next .3 of a mile.



Four Holes (Class IV, Mile 3.7)

Big rocks obstruct the middle and left at the top of this steep drop. Enter on the far right, aiming diagonally left between a big hole on the right and the recirculation from the rocks blocking the middle top. Once past the right side hole, immediately cut back right to avoid a huge ledge hole on the left. Once past this left side hole, aim back to the far left to avoid the big hole in the bottom middle.



Little Dog (Class IV, Mile 3.8)

The river turns back north and immediately comes to "Little Dog", the lead in rapid to "Big Dog". An easy take-out for scouting is on river left. . There are left, center and right routes through the rapid, but the center is probably safest at most flows. Go to the left of the big rock in the center, but then cut back to the middle to catch the main tongue. A second drop just downstream is straightforward. WARNING! Only a short distance of swift water separates the end of Little Dog, from the beginning of Big Dog. If someone swims out of Little dog there is a strong likelihood of also swimming Big Dog.



Big Dog (Class 5.0, Mile 4.1)
Click Here For Video

The right side entrance is a steep drop with a hole. Some boaters cut the left edge. The right side cliffs are horribly undercut and large volumes of water flow underneath. Once past the entrance the right side is relatively clean. A center entrance is most commonly used. The current moves from center to left and into an ugly undercut rock. Kayaks seem to get past the undercut okay, but it can flip rafts. Boaters usually enter center and charge right. They just fight two ledge holes if they don't get far enough right. Scout on river right. There is an easy portage over slabs on the right.



No Name (Class III+, Mile 4.2)
Rocks and holes in the middle force boaters to enter far right. The rapid curves gradually to the left and boaters must paddle to stay away from the overhanging right wall, though without going so far as to end up in a big hole on the bottom left side.

Constriction (Class III+, Mile 4.4)

The river enters a large round pool with a very narrow exit down a single steep drop. There tends to be strong recirculation at the base. Boats have to punch one side or the other of the hole, but the exact best line varies with flow. Scouting from river left is easiest. The right wall below the drop is very undercut and there is a strong eddy current going under it. If swimmers or equipment get pushed into this eddy, it can be awkward to reach them.


Past this drop, moderate rapids, weird upwelling and beautiful scenery continue until just above the powerhouse.



Powerhouse Hole (Class III+, Mile 6.0)
At lower flows (at least up to 2,000 cfs) the main channel constricts and drops into a steep recirculating wave. Kayaks can sneak on either side of the wave or just sneak down a separate channel on the right side. One can scout or portage from either side, but the left side is bedrock. At 1600 cfs this hole can be very sticky, and can keep rafts until ropes pull them out. Swimmers are flushed out immediately.

Big Creek #4 Powerhouse (Class II, Mile 6.2)
The powerhouse adds 3,600 cfs of additional flow. The water wells up from underneath then pushes everything over to the left. Relative flat water continues one mile to the highway bridge at Kerchoff Reservoir.

Bridge at Kerchoff Reservoir
Take out under the bridge on river right. Carry up to the old road and then back across the highway to the parking area.


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Epic Swims - San Joaquin Swim - At 18,000 CFS
Whitewater Release on Horseshoe Bend, California

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