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RiverBrain

Colorado – US

Class
V to V+
Length
12 Mile(s)
Put-in elevation
9,565 Feet
Take-out elevation
8,442 Feet
Typical season
May to September
Author
KSC

Current Flow

150 CFS

Gauge height: 2.07 FT

Reading from Jul 10, 2026 9:45 PM

0.00/hr (12h) 0.00/hr (24h)

Running

Hit some laps

Primary gauge
LA POUDRE PASS CREEK BELOW LONG DRAW RESERVIOR Gauge detail & alternatives Live gauge ↗

Recommended levels

Minimum150
Average350
Maximum800

Recommended use

  • Kayaking
  • Rafting
  • Canoeing
  • SUP
  • Packrafting
  • Fishing

Struck-through craft are not recommended for this run.

Flow history — last 6 days

Photos

Big South Put-in · 07-12-2010 · Weird Creek put-in · Photo by Kevin Cripps · Subject: Jake Vos, Texas Ken

Open in full map →

Description

Ask a seasoned Colorado kayaker what their favorite run in the state is, and more times than not you’ll hear the words “Big South” in their response.  High up the Cache La Poudre river drainage, melting off the eastern slope of Rocky Mountain National Park, this gem funnels its way through relatively unspoiled high altitude forests and meadows.  In California, this run might blend in with the crowd, but in Colorado, this stands out as a long stretch of quality whitewater in a wilderness setting.  It’s not uncommon to find East coast boaters staked out at this run on a summer road trip and Fort Collins locals always abound.  

 

Despite this run having a relatively long season, access is a constant battle.  The typical put-in involves driving up Long Draw Road and putting in on Weird Creek at the base of Long Draw Reservoir.  Unfortunately, the Forest Service rarely opens the road before July 4th, when most of the runoff has already occurred.  In some years, the road is closed for the entire boating season.  The reasons given  for the closure are inconsistent.  Generally the Forest Service sites concerns over the campgrounds being used before they are dry, even though there has been a successful precedent for day use access only.  This is one of the most disappointing access issues in all of Colorado.

 

If the road isn’t open, there are two subpar options for getting on the run.  The first option allows access to the bottom portion of the run.  A casual two hours of hiking and lake paddling will gain access to the top of Prime Time Gorge (see the “Access” tab).  The only reasonable way to access the full run when the gate is closed is to drive into Rocky Mountain National Park and put-in for a “source” run (i.e. putting in near the source of Big South proper). This is usually done as an overnight trip and requires a long shuttle.  The source put-in to the run proper adds an extra 4-6 hours on the water and can involve a lot of boat dragging and hiking if the water level and/or snow situation is less than ideal.

 

So what’s all the fuss about?  The Big South has it all.  Serious class V boaters can test their skills on a few larger solid class V rapids, but competent IV-V boaters can enjoy numerous fun class IV and several V- drops with some portages around the big ones.  The run has a section of steep unnatural mank, a nice stretch of pool drop creek boating, a double drop into a massive hole, a long complex rapid, clean 8 foot boofs, and countless technical boulder gardens all through a beautiful high forest wilderness area.

 

When Long Draw Road opens in early July and there is water in the creek, Big-South-apalooza usually ensues.  Boaters from across the state tend to show up on the weekend about the same time and parties criss-cross as they make their way down the river.  The day either starts at the top of Weird Creek or a few hundred yards above the Weird Creek and Big South confluence, depending on the amount of water being released from Long Draw and the party’s tolerance for gear abuse weighed against hiking.  

 

Weird Creek is an unnatural riverbed that offers some entertainment at the price of significant boat abuse.  Rock Lobster is the signature drop, that although slightly steeper than the rest of the creek, it isn’t that much different.  It comes near the end of the creek and involves a manky entrance followed by a sharp turn to avoid wood, and a manky runout.

 

Shortly after Rock Lobster, the Big South proper enters from the right.  Enjoy the added flow and meander a ways further until the action starts.  The upper portion of this run looks very unlike most of Colorado.  Slow meandering pools are punctuated by several larger drops.  For the most part, horizon lines are obvious and ought to be scouted.  Cool World, the largest drop in the upper section, has a deceptively mellow lead in and can sneak up on the inattentive boater.

 

The upper and lower stretches are divided by a 2 mile section of class II.  I suggest thinking of it as a break before the fun kicks into gear on the lower stretch.  The lower stretch has a more continuous nature and becomes increasingly so the further downstream you travel.  At normal flow, eddies abound and even large groups are manageable.  Enjoy several fun mini gorges, two larger rapids, and more fun class IV than you’ll likely be able to keep track of on your first run down.  If you want to look like a veteran, pack bug spray.

 

FLOW INFORMATION

Check out the Poudre Rock Report (external link) for the latest gauge info.  There is a marked rock (6 marks) under the bridge at the takeout that is commonly used to measure the flow on the Big South (don't confuse this with the Pineview Falls rock gauge).  The gauge listed for this run is only for the outflow from Long Draw reservoir and does not include the natural flow draining out of RMNP on the main stem of the Big South.  Below is a rough translation of the rock gauge (measured by the mark the water line is touching):

1.5 = very low (consider running only the lower half)

1.5 - 3 = low 

3 - 6 = medium

All marks buried = high

Rapids

# Rapid Class Recommended flow Description Scout
1 Pinball Wizard IV+ —–—

When it looks like Weird Creek starts to fall off the face of the earth, you’re probably in Pinball Wizard.  It’s anyone’s guess where exactly the rapid starts and stops.  Stick with the normal plan of action on Weird Creek and keep the boat as straight as possible and try not to pin.

2 Rock Lobster V- —–—

Many people walk this junky rapid, but I’ve never been able to figure out why this rapid is much different than the rest of Weird Creek.  The rapid has a slightly steeper entrance and requires a move to the right to avoid some logs. Swims here tend to be unpleasant.


3 Starter Fluid V- —–—

This is where the real goods begin.  There’s plenty of time to get nervous about the run, so don’t do it yet. Starter Fluid is all about fun.  A class III-IV entrance leads to a 10 foot horizon line with an easy and quality boof. Try to drive up on the right corner of the center channel for the best vertical. 

4 Bouncing Betty, Taco Bobs V- —–—

These two drops go together like peanut butter and jelly.  The first drop, Bouncing Betty, involves boofing through a narrow slot to avoid pinning on the downstream rocks.  A small pool separates it from Taco Bobs.  Ferry back to the river right and keep the boat straight through the next slot.  A death occurred here in 2009 when a boater pinned on the downstream side of the slot on Bouncing Betty.

5 Barroom Brawl V- —–—

A horizon line in the right channel signals Barroom Brawl.  At the center of the horizon line, take a big sweeping left stroke to keep yourself off the undercut left wall at the bottom and hold on for the ride.


6 Fantasy Flight V —–—

Immediately after Barroom Brawl a large pool above another significant horizon line starts Fantasy Flight. Choose between the ugly looking left line and the ugly looking right line. The left line is nice at higher flows, but I prefer the less popular right line at lower levels.

7 Cool World V+ —–—

A class IV boulder garden separates Fantasy Flight from Cool World.  Don’t get lulled into the innocuous looking entrance to Cool World.  Scout on river left and take a good look at the “lobster trap” and some subtle undercuts that lurk below before committing to this rapid.  It usually goes better than it looks, but the consequences of a blown line can be bad.  If you portage this drop, at least enjoy the 8 foot ledge at the bottom.

8 Bonk IV+ —–—

A small horizon line with a boulder splitting the channel starts Bonk. Take the left channel and try to keep from getting shoved into the left wall, else your boat might go, “Bonk!”

9 Meltdown Madness V —–—

Wood ebbs and flows from this rapid making its runnability vary at different levels.  While technically not that difficult, be sure to scout the deadly sieve in the middle of this drop before committing.  Portage higher and farther to the left than you think you want to.

10 Nitrogen Narcosis IV+ —–—

After the long section of flatwater, the gradient picks up again starting with this rapid.  Look for a great boof at the end of this boulder garden rapid.  

11 Prime Time Gorge V- —–—

After passing through some fun boulder gardens, the best boulder garden awaits as it enters a snall gorge.  Depending on the level you'll either navigate around boulders, holes, or both until the river pinches through a fun boof and into a still pool in a gorgeous mini gorge. 

12 Double Trouble V+ —–—

This is one the Big South's signature drops. The river cascades about 40 feet over two 20 foot tiers and terminates in a river wide hole that can best be described as, impressive. The top drop has lines down the left, center, and right. The bottom portion is a steep sloping curtain requiring a delayed boof stroke to propel you through the massive hole at the bottom. What's so great about this rapid is that even though it's large and scary, it's clean and boaters generally win or lose based on the execution of their run, rather than chance. The bottom hole is a great place to set safety.

13 Pincushion V- —–—

Don't be the pin in the pincushion.  This innocuous looking horizon line drops straight into a nasty block of rock that has pinned boaters, caused swims and pitons, and generally put boaters in uncomfortable situations.  Fortunately, the move is relatively easy.  The money move is to rock slide the flat boulder on the left side of the tongue leading into it, however I've found that as long as you land with your bow facing left, the results are satisfactory.

14 Slideways V —–—

This is my favorite rapid on the run because it combines almost all the disciplines of kayaking into one rapid.  Run a boulder garden at the top, boof a 4 foot ledge through a small hole/seam that wants to feed you into a dangerous slot on the left.  Next, charge a glorious 8 foot spout boof and eddy out on the right.  Ferry back over to a small eddy on river left and set up for the last ramp into a sticky hole. 

15 Tubular Balls V- —–—

The character of this rapid changes significantly at different flows, but is always fun.  At high water this rapid can get rowdy.  At lower flows, squeeze through a slot at the top and punch the various holes below and boof off the ledge in the center or ride the ramp down the river right side.

16 The Rush V —–—

Most boaters take out before this rapid or near the beginning of this rapid and walk to the takeout, but if it's clear of wood and you're still in want of more action, drop into this last steep section of whitewater, but scout and most likely portage Curtain Call, a seived out rapid near the very end of the run.

Access

Type Name Elevation Camping Water Boat ramp Vehicle access Description
Put-In Peterson Lake 9,565 Feet No No No All Vehicles

Paddle across the reservoir and hike down the hill.

Put-In Barnes Meadow Hike 9,065 Feet No No No All Vehicles

Before the gate is opened you can paddle across Barnes Meadow Reservoir and hike across the obvious saddle on the map. This drops into the canyon at the bottom of Prime Time Gorge. The Big South trail is on the south side of the river for those wanting to hike up and run Prime Time.

Put-In Long Draw Reservoir 10,051 Feet No No No All Vehicles

The normal put-in for when the gate is open.

Take-Out Big South Campground 8,442 Feet No No No All Vehicles
Put-In Coral Creek No No No All Vehicles

Corral Creek trailhead provides access to the Big South if Weird Creek is too low to run or you do not want to break your boat. Hike about a mile and put in at the confluence of Weird Creek and Cache La Poudre.

Camps

No river camps added yet.

Permit

No permit is required, or permit info hasn't been added yet.

Fishing

No fish species have been associated with this run yet.

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