11 Mile Canyon Fishing Report

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Fishing Report

Jun 12, 2018

Water levels in Eleven Mile Canyon have dropped over the past few days and the current flow is at 55 c.f.s. While there are still plenty of visible trout to cast at, the fishing has become more challenging with the decrease of water being released. With the temperatures climbing as the day progresses, the best fishing continues to be in the early morning hours and later in the evenings. Caddis pupa and larva are abundant and we are still seeing the occasional BWO on the water. When nymphing, be wary of larger strike indicators, use 5x or 6x fluorocarbon tippet, and stick with the smaller size #22-#24 midges. Have a variety of Pheasant Tails, Baetis, Caddis, and BWOs in your flybox. Below are some recommended patterns that have been successful in fooling the trout.


  • Graphic Caddis, Tan, Olive, #14-18
  • Nitro Caddis, Tan, Olive, #16-18
  • RL Tung Pheasant Tail, Natural, Black, #18-22
  • CDC RS2, Purple, Grey, #20-24
  • Purple Haze, Dun, Olive, #18-24
  • Trans Ant, Black, Red, #14-20

Previous Fishing Reports

May 8, 2018

Signs of spring are beginning to show all along the South Platte River. The bug activity has increased dramatically over the past few weeks and the fish are enjoying the increase in multiple food sources. We are seeing a heavy emergent activity of mayflies, midges and even caddis.

The flows at Eleven Mile Canyon have been bumped slightly over the past few days and are now around 85 cfs.  The water temperature is in the mid-40s and excellent water clarity makes sight fishing a breeze.  These conditions do require stealthier approaches, lighter tippets (fluorocarbon), smaller flies, and longer leaders. Make sure you use plenty of weight, be wary of large, bright strike indicators, and get your patterns into the fish’s feeding lanes quickly. The best fishing has been between 9 a.m. and 4 p.m. We are starting to catch fish on caddis larva and pupa patterns and BWO hatches continue to be abundant in the late afternoons, especially on overcast days.  As always is the case, look for trout to be holding in the slower, deeper runs and pools where they can obtain the largest quantity of food, while expending the least amount of energy.  


  • Thorax BWOs, Olive, Dun, #18-24
  • Rainbow Warriors, Red, Pearl, #20-22
  • Sparkle Wing RS2s, Grey, Olive, #20-24
  • Juju Baetis, Black, Purple, Red, #18-22
  • Sam's Carolina Caddis, Chartreuse, #18-20
  • Nitro Caddis, Tan, Chartreuse, #16-18

Mar 9, 2018

The flow in Eleven Mile Canyon has been consistent around 75 c.f.s for the past several weeks, which is slightly above the historical average for this time of year. The water is for the most part clear, allowing for abundant sight fishing. The best fishing has been between 9am - 3pm. On some days, the wind has picked up in the late afternoons, and the fishing slows down a bit. There is very little ice on the banks, so the majority of the river is fishable. The trout have been taking small midges and emergers in the morning, with dry fly activity in the later afternoon. For success, you must use tiny patterns in the #20-26 range for both nymphing and dry flies.  We recommend using plenty of split-shot, long leaders, and certainly 6x fluorocarbon tippet. Midges and BWOs have been spotted on the surface on overcast days, but nymphing is still the most productive technique this time of year. Try an attractor pattern up top (scuds/eggs/worms), trailed by chocolate, purple, red, or black midges. The recent warmer weather has seen an increase in insect life along the banks and the canyon fish seem to be healthy, strong, and abundant.


  • JuJu Baetis, Purple, Red, #20-24
  • Sniper Baetis, Purple, Black, #18-22
  • Zebra Midges, Black, Red, Chocolate, #20-22
  • Griffith Gnats, Grizzly, Hi-Vis, #22-24
  • Sow Bugs, Gray, #16-18
  • Sam's Carolina Caddis, Chartreuse, #18-20

Dec 4, 2017

Over the weekend, flows have increased in the canyon to 90 c.f.s, which is good news.  The water is clear with river temperatures in the low 40's, so sight fishing should be possible.  Try different weights to hit all the levels of the water column to see where the fish are feeding and adjust accordingly. Midges and BWO nymph imitations should be your focus throughout the winter.  Black, chocolate, and red midge colors are good this time of year.  We also recommend going down to 6x or even 7x fluorocarbon.  Some midge hatches are happening in the afternoon, so make sure to have some #22-#24 Adams or BWOs in your fly box. Nymphing has been productive lately, but don't miss the opportunity to go after fish targeting specific hatches, especially on those overcast days. 


  • Barr's BWO Emergers, Olive, #18-22
  • Thorax BWO Dry, Olive, Dark Grey, #20-24
  • Parachute Adams, Grey, #20-24
  • Zebra Midges, Red, Chocolate, Black, #20-22
  • Killer Mayfly, Black, Brown, #18-22
  • Darth Baetis, Black, Olive, Grey, #18-22

Sep 20, 2017

Fishing in Eleven Mile Canyon has been pretty good lately. As we transition into fall the PMD hatch has come to an end while the fall Blue Winged Olive hatch begins. Look for BWO's hatching in the afternoons, especially on cloudy days with light winds.

We are still seeing good Trico hatches in the mornings which should continue into October. September is also a great time to try a hopper dropper combo, especially in the afternoons when no other hatch is obvious.


  • Barr's BWO Emerger, #18-22
  • TB Pheasant Tail, #18-22
  • Sparkle Dun Baetis, Olive, #20-22
  • JuJubee Midge, Red, Brown, #20-22
  • Zebra Midge, Black, Copper, #20-22
  • Griffith's Gnat, Grizzly, #18-22

Jul 12, 2017

Fishing in 11 Mile Canyon is very good. We are seeing all of the typical summer hatches. Tricos, Pale Morning Duns (PMD), Caddis and Stoneflies.

Tricos Duns (female/olive) are hatching first thing in the morning followed by the Trico Spinner Fall. Just before the Tricos wrap up the PMDs start to come off. The entire process is usually wrapped up by 1pm.

In the afternoon and evening try using a Hopper/Dropper combo or a Caddis Dry Imitation. 


  • Drowned Trico Spinner, #20-22
  • Barr's Visa-dun Trico, #20-22
  • Comparadun PMD, #16-18
  • Thorax PMD, #16-18
  • Hippy Stomper, #14-16
  • Elk Hair Caddis, #16-18
  • RS2, Black, #20-22

Jun 19, 2017

The entire South Platte is fishing great. It's an excellent time to be on the water!

Flows have been bouncing around a bit but the additional water is welcome. Like the rest of the South Platte we are starting to see Tricos and PMD's. The fish should start keying in on them soon.

Caddis have been active throughout the day. This is also a great time of the year to throw a Hopper + Dropper.


  • Bead Head Pheasant Tail, #18-22
  • Puterbaugh Caddis, #16-18
  • Girdle Bug, Coffee/Black, #6-10
  • RS2, Black, #20-22
  • Hares Ear, Olive, #16-18
  • Trico Spinner Pearl Wing, #20-22
  • Stimulator, #12-16

May 22, 2017

Fishing in the canyon has been very good. Flows have been pretty consistent over the past month but are still on the low side. While not as technical as the Dream Stream these fish will still spook so approach with caution.

Midges, Blue Winged Olives (BWO's), and Caddis are all active. Start the day dead drifting nymphs or stripping/swinging small streamers. We have been seeing some hatches beginning in the early afternoon.

If you see Caddis fluttering around the water but no obvious hatch try fishing a Caddis Pupa just under the surface either behind a dry or as part of a subsurface rig.


  • S Platte Roller, #14-16
  • Two Bit Hooker, Brown, Red, #18-20
  • Mercury Phesant Tail, #18-20
  • Etha-wing BWO, Olive, #20-22
  • JuJu Baetis, Purple, #18-22

Apr 20, 2017

With consistent warm spring temperatures and decent flows the fishing in the canyon has been heating up. More fish are leaving their deep wintering holes and venturing into the shallower riffles and runs to feed.

While good hatches of Blue Winged Olives (BWO's) have been going off throughout the South Platte River the fish seem to still be focused on feeding subsurface.

Good hatches of Baetis (BWO's) have been going off throughout the South Platte River and the Caddis are just around the corner.

We've been seeing good surface activity in the afternoon. Especially on overcast days with less wind. 

Nymphing with Baetis and Caddis larva can be very effective. As the Caddis become more prevalent, swinging pupa patterns can be deadly.

Don't overlook stripping or swinging streamers. With warmer water temps these fish will move for a meal. 


  • Etha-Wing BWO, #20-22
  • Vis-dun Baetis, #20-22
  • Rubber leg Pheasant Tail, #18-22
  • Juans Hi-Vis Baetis, Red, Purple, #18-20
  • Wooly Bugger, #12-14
  • Mini Leach, #14-16
  • Caddis Larva, #16-18

Feb 18, 2017

The flows in the canyon have been drifting up slowly over the past few weeks. Most of the water is ice free and accessible. Overall, the fishing has been fairly decent.

Despite the warm afternoons we've had lately the overnight temps are still very cold. Focus on the areas that have the earliest exposure to the sun.

Midge hatches have been somewhat sporadic. Dead drifting midge patterns or swinging small streamers and mini leaches have both produced fish. Fishing small (20-26) midge patterns on the surface has also been effective when fish are rising.


  • Zebra Midge, red, #20-22
  • Skinny Nelson, black, #20-24
  • Fly Currents UV Emerger, black, brown, olive, #20-24
  • Sniper Baetis , olive, purple, #18-22
  • Mini Leaches, natural, black, rust, #12-16

Jan 16, 2017

The fishing in the canyon is fantastic. If you wanna dry fly fish, which is proving productive as long as the wind is down, try a tiny Parachute Adams trailed by a small high viz Griffiths Gnat. Nymph the deep slow pools with 6x flurocarbon tippet and tiny red, black and purple midges. Don't hesitate to dredge the bottom with your favorite streamer pattern like a Slump Buster or white Wooley Bugger. 


  • Wooley Bugger, White, #6-10
  • High Viz Griffiths Gnat, Natural, #20-24

Dec 13, 2016

The canyon is fishing better than the Dream Stream right now, but is still difficult. The flows are much higher at 96 c.f.s. Anglers should still look for trout in the deeper pools and riffles. Water clarity is excellent. 

 A few shady spots of the river are starting to see some ice build-up. BWOs are hatching between 10-11am & then again in the late afternoon. Use imitations in the #20-24 range and be sure to have light leaders and small tippet on your dry fly presentations.


  • Griffith Gnat, #20-24
  • GT Adams/BWOs, #20-24
  • Hot Pocket BWO Emergers, #20-24
  • Midges, #22-24

Oct 10, 2016

Flows in the canyon have been hovering in the 120 cfs range and fishing has been great.

We are still some Trico's but the hatch is starting to taper off. On cooler and overcast days we are also seeing decent Blue Winged Olive hatches.

As night time temperatures continue to drop the fish are less active in the early morning hours. Look for activity to pick up after 10 am as the water and air begin to warm.


  • Pheasant Tail, #20-24
  • RS2, Black, Gray, #20-24
  • Barr's Emerger, #20-22
  • Parachute Adams, #20-24
  • Trico Spinner, #22-24

Sep 1, 2016

The canyon is fishing excellent this week. The flows are up at 184 cfs and the fish are rising! Sight fishing is definitely possible. Tricos are now going off between 7-11am and caddis are plentiful in the late afternoon well into the evenings. Some PMDs are also being spotted but are not as heavy. The Tricos are past full swing and are getting smaller with every week.

Use olive imitations (female) in the early morning and switch to the black as the day goes on. Use #20-24 range and be sure to have light leaders and fluorocarbon tippet.


  • Trico Spinner, Pearl Black, #22-24
  • Thorax Trico, #22-24
  • RS2, Black, Sparkle Wing, #20-24
  • Graphic Caddis, #18-20
  • Caddis, Foam, Tan, #16-20

Aug 1, 2016

The canyon is fishing good and the flows are at 198 cfs. Fish are holding in riffles during the mornings and moving to the deep pools later in the day. Water clarity is good and Tricos are still going off during the morning between 8am - 11:30am. The fish are feeding heavily on the trico spinners. Caddis are hatching in the late afternoons especially on the overcast days. The caddis naturals are tan and light yellow right now.

Try fishing a double dry rig with a light yellow Elk Hair Caddis followed by a Trico Spinner. Use Trico imitations in the #20-24 range and be sure to have light leaders and small tippet on your dry fly presentations.


  • Trico Spinner, Pearl Black, Drowned, #22-24
  • Thorax Trico, #22-24
  • RS2, Black, Sparkle Wing, #20-24
  • Graphic Caddis, #18-20
  • Caddis, Elk Hair, #16-20

Jul 22, 2016

Eleven Mile Canyon is at 113 cfs and is fishing fantastic. Nymphing the slower pools will produce fish. Tricos in the morning along with the Caddis have been present for the past several weeks. Try Caddis nymphs, pink/red San Juan worms, black, grey or brown midge patterns in the #20-24 size range.

If you prefer dry fly fishing you're in for a treat. Try a rusty spinner behind an Elk Hair Caddis.


  • Trico Spinner, Pearl Black, Drowned, #22-24
  • Thorax Trico, #22-24
  • RS2, Black, Sparkle Wing, #20-24
  • Graphic Caddis, #18-20
  • Caddis, Elk Hair, #16-20
  • Fat Albert Hopper, #14-12

Jul 1, 2016

The canyon is fishing excellent this week. The flows have been rising steadily and are now at 98 c.f.s. There are trout everywhere, but especially stacked up in the deeper pools and riffles. Water clarity is excellent and trout are rising to feed.

Caddis, PMD, and Tricos are now all going off! The fishing is best between 8-11am & then again in the late afternoon, especially on the overcast days. The caddis naturals are small and dark in color. Use imitations in the #18-20 range and be sure to have long leaders and small fluorocarbon tippet on your dry fly presentations.


  • Trico Spinner, Pearl Black, Drowned, #22-24
  • Thorax Trico, #22-24
  • Adams, Hot Pocket, #20-24
  • Graphic Caddis, #18-20
  • Caddis, Foam, Olive, Brown, #16-20
  • Peacock Caddis, #16-20

Jun 1, 2016

Eleven Mile Canyon has a reputation for great fly fishing opportunities, and currently the river is not disappointing. With flows consistently hovering around 75 cfs, water clarity is exceptional. Trout of all species are abundant, and spread evenly throughout traditional runs, riffles and pools. If you spend some extra time carefully looking in these areas, sight fishing for trout in the 16-19 inch range can be excellent.

Dry fly action is ever present especially into the evening. Don't be afraid to throw a small streamer like a slump buster through the deeper pools.


  • Parachute Adams, #20-22
  • Comparadun BWO, #20-22
  • Pheasant Tail, Flashback, #20-22
  • RS2, Gray, Sparkle Wing, #20-22
  • Slumpbuster, #8-12

Apr 1, 2016

If it’s great dry fly fishing you want, then make sure you hit the canyon soon. The Blue Winged Olive hatch has been exceptional. The flows are at 60 cfs and it’s an opportune time for sight fishing. Fish a tandem dry fly rig with a size 18 Parachute Adams up front and size 22 or 24 Parachute Blue Winged Olive trailing.

Keep the distance between the flies short (around 6-8 inches). If the space between your dry flies is too large they will get stuck in different currents, and your presentation will be compromised.

Don’t let the great dry fly fishing overshadow the fantastic nymphing to be found in the canyon right now. Fish a tandem rig with a red San Juan worm up front and purple JuJu Baetis trailing. If you don’t get any takers on the Baetis try switching it out for a U.V. Midge Emerger.


  • Parachute Adams, #20-22
  • Comparadun BWO, #20-22
  • Pheasant Tail, Flashback, #20-22
  • RS2, Gray, Sparkle Wing, #20-22
  • Barr's Emerger, BWO, #20-22

Mar 7, 2016

Almost all ice is off the water at 11 mile canyon. The banks can still be snowy so use caution when walking down to the water. The flows are hovering around 65 cfs so look for fish in the deep pools and runs.

Use long leaders with 5x and 6x fluorocarbon tippet. Mornings can be cold in the shade of the canyon so dress warm. Try leading with an orange egg pattern, and a black u.v. emerger behind.


  • Foam Back Emerger, Choclate, #20-24
  • UV Emerger, Black/Choclate, #20-24
  • Pheasant Tail, Flashback, #20-22
  • RS2, Gray, Black, Sparkle Wing, #20-22
  • Barr's Emerger, BWO, #20-22