South Platte River
Cheesman Canyon & Deckers

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Forecast






Trending Flies in Recent Reports

  1. San Juan Worm  

  2. Scud  

  3. Mercury Midge  

  4. Juju Baetis  

  5. Zebra Midge  

  6. Leech  

  7. PMD  

  8. Griffith's Gnat  

  9. Parachute Adams  

  10. Elk Hair Caddis  

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Recent Guide Reports

Aug 16 FlyCast River Forecast

Technicality: 4/5

Flows increased on Tuesday and Wednesday from 317 to 502 cfs. The increase in flow has pushed trout back towards the banks and outer seams. Unless you can find a slow pool or run, we recommend focusing your efforts on the outer sections of the river. Trout are keying in on large bugs above and below the surface. Above the surface, Chubby Chernobyls and Amys Ants will work well when trailed with a San Juan Worm, Pats Rubber Legs or PMD Emerger. When nymphing, lead with a large pattern such as a Pats Rubber Legs, San Juan Worm, crane fly larva or scud. Below one of those patterns, trail one or two baetis/PMD emergers. Allowing your line to swing at the end of the drift will encourage strikes on the emergers.

Ideal Days to Fish: Tuesday, Wednesday & Thursday

Suggested Flies:

Sub-surface: red Copper John (#18-20), RS2 (#20-22), JuJu Baetis (#22-24), JuJu PMD (#20-22), WD 40's (#22-24) Chocolate Thunder (#20-22), Barr's Emerger (#20-22), Pheasant Tails (#18-22), Black Beauty (#22-24), Zebra Midge (#18-22), Mercury Midge (#22-24), Top Secret Midge (#22-24), Disco Midge (#22-24), Electric Caddis (#16-18), Super Pupa (#16-18), Rainbow Warrior (#20-22), Pats Rubber Legs (#10-12), Little Yellow Sloan (#14-16), leech patterns, scuds and San Juan Worms.

Surface: Parachute Adams (#20-24), Parachute PMD (#20-22), Elk Hair Caddis (#16 - 18), Chubby Chernobyl (#10-12) and Griffiths Gnat (#22 - 26).



This report was written by FlyCast River Forecast: https://www.flycastusa.com/

Aug 16 FlyCast River Forecast

Technicality: 4/5

Ideal flows proved to be short lived. The dam opened up on Tuesday, increasing Cheesman Canyon flows from 367 cfs to 539 cfs. This sharp increase pulled trout away from the center of the river and consolidated them in the soft water along the banks. While you may find a couple pools/runs slow enough to hold trout, the majority of the action will be along the outer seams and banks. Dry dropper and hopper dropper setups have been highly effective when targeting trout in the slow and shallow water. The Amys Ant has been our go-to dry fly pattern when running a dropper off the back. Lead with an Amys Ant and trail either a San Juan Worm, scud, Pats Rubber Legs or PMD Emerger. If youre nymphing the outer seams, a heavy nymph rig will do the trick. Dont be stingy with the weight and dont be afraid to lead with a large pattern. Increased flows have trout keying in on stoneflies, worms, crane fly larva and scuds. Pink and green scuds in particular have been highly productive. Trailing one or two baetis/PMD emergers behind one of those patterns will pick up trout in the late morning and early afternoon.

Ideal Days to Fish: Tuesday, Wednesday & Thursday

Suggested Flies:

Sub-surface: RS2 (#20-22), Barr's Emerger (#20-22), JuJu PMD (#20-22), Chocolate Thunder (#22-24), JuJu Baetis (#20-22), Pheasant Tail (#20-22), WD 40 (#20-22), Mercury Midge (#22-24), Black Beauty (#22-26), Zebra Midge (#20-24), Blood Midge (#20-22), Disco Midge (#20-22), Electric Caddis (#16-18), Super Pupa (#16-18), Pats Rubber Legs (#10-12), Little Yellow Sloan (#14-16), leech pattern and San Juan Worm.

Surface: Parachute Adams (#22-24), Parachute PMD (#20-22), Elk Hair Caddis (#16-18), Griffiths Gnat (#20-22) and Chubby Chernobyl (#10-12).



This report was written by FlyCast River Forecast: https://www.flycastusa.com/

Aug 11 FlyCast River Forecast

Technicality: 4/5

Sitting at 342 cfs, flows through Deckers are in the money zone. Prior to the drop in flow, trout were hugging the banks but are now able to spread out across the river. Along with the banks and outer seams, the deep pools and runs will hold trout during the morning hours. In the afternoon, target the head of runs and riffles. Trout love to feed in the faster water when temperatures rise. Hopper droppers and dry droppers are still effective methods when fishing the near the banks. Aside from that, double/triple nymph rigs will pick up plenty of trout in the deeper and faster water. PMD and baetis patterns have been the key lately, but if youre struggling to get the trouts attention, swap out your lead fly for a Pats Rubber Legs, Guides Choice Hares Ear or caddis larva. JuJu PMDs, Barrs Emergers, olive RS2s, Chocolate Foam Wing Emergers and Black Beauties are all must haves right now.

Ideal Days to Fish: Tuesday, Wednesday & Thursday

Suggested Flies:

Sub-surface: red Copper John (#18-20), RS2 (#20-22), JuJu Baetis (#22-24), JuJu PMD (#20-22), WD 40's (#22-24) Chocolate Thunder (#20-22), Barr's Emerger (#20-22), Pheasant Tails (#18-22), Black Beauty (#22-24), Zebra Midge (#18-22), Mercury Midge (#22-24), Top Secret Midge (#22-24), Disco Midge (#22-24), Electric Caddis (#16-18), Super Pupa (#16-18), Rainbow Warrior (#20-22), Pats Rubber Legs (#10-12), Little Yellow Sloan (#14-16), leech patterns, scuds and San Juan Worms.

Surface: Parachute Adams (#20-24), Parachute PMD (#20-22), Elk Hair Caddis (#16 - 18), Chubby Chernobyl (#10-12) and Griffiths Gnat (#22 - 26).



This report was written by FlyCast River Forecast: https://www.flycastusa.com/

Aug 11 FlyCast River Forecast

Technicality: 4/5

Flows came down over the weekend and currently sit in-line with the historical average. As a result, water clarity has increased and trout are now able to spread out and feed in various sections of river throughout the day. Dry droppers along the banks will still produce results, but dont be afraid to cover a lot of water. If youre targeting the banks and outer seams, rig up an Amys Ant followed by a PMD or baetis emerger. Other than that, nymph rigs will get you on the most fish. The reduction in flow has trout keying in on smaller bugs right now, so we recommend starting with a double baetis/PMD nymph rig. If thats not getting the job done, lead with a scud, caddis larva, Prince Nymph or Hares Ear.

Ideal Days to Fish: Tuesday, Wednesday & Thursday

Suggested Flies:

Sub-surface: RS2 (#20-22), Barr's Emerger (#20-22), JuJu PMD (#20-22), Chocolate Thunder (#22-24), JuJu Baetis (#20-22), Pheasant Tail (#20-22), WD 40 (#20-22), Mercury Midge (#22-24), Black Beauty (#22-26), Zebra Midge (#20-24), Blood Midge (#20-22), Disco Midge (#20-22), Electric Caddis (#16-18), Super Pupa (#16-18), Pats Rubber Legs (#10-12), Little Yellow Sloan (#14-16), leech pattern and San Juan Worm.

Surface: Parachute Adams (#22-24), Parachute PMD (#20-22), Elk Hair Caddis (#16-18), Griffiths Gnat (#20-22) and Chubby Chernobyl (#10-12).



This report was written by FlyCast River Forecast: https://www.flycastusa.com/

Aug 07 The Blue Quill Angler

Clarity: Excellent

14 Day Forecast: Look for above average flows. Anglers should prepare themselves for hatches of midges, caddis, PMDs, yellow sallies, golden stoneflies, and Tricos.

Tips and Other Information: Flows are still high due to run-off. Make sure you target the soft water margins and use lots of weight. Anglers should prepare themselves for hatches of midges, caddis, yellow sallies, PMDs, and Tricos, Dont be afraid to throw some big-bites too, as scuds, leeches, craneflies, and stoneflies are also great options, especially for an attractor. Cheesman Reservoir quit spilling two days ago. All of the water is now coming off the bottom of the reservoir.

Effective Patterns: #20 Juju Baetis, #14-16 UV Scud, #10 Pats Rubber Legs, #20 Chocolate Foam Wing Emerger, #22 Stalcups Baetis, 20-22 Mercury Midge, #18 Buckskin, #20 Pale Olive Midge Larva, #20 Sparkle Dun, #18 Barr Emerger, #18 Mitchells Split Case, #14-16 Elk Hair Caddis, #14 Yellow Stimulator, #24 Stalcups Trico, #16 Barrs Graphic Caddis, #16 Mercers Swing Caddis, #22-24 Matts Midge, #22-24 Griffith Gnat, and #20-22 Parachute Adams.

This report was written by The Blue Quill Angler: http://www.bluequillangler.com
303-674-4700

Aug 07 The Blue Quill Angler

Clarity: Excellent

14 Day Forecast: Look for the flows to return to their normal historic levels soon. Anglers should prepare for hatches of golden stoneflies, caddis, yellow sallies, and PMDs.

Tips and Other Information: Cheesman Dam quit spilling two days ago and currently all the water is flowing off the bottom of the lake. Flows are still 200 cfs above their normal historic levels, but they are dropping fast, as the outflows from below Spinney are at 300 cfs, plus 110 cfs flowing out of Tarryall Reservoir. Water temps are perfect, in the mid 50s, and the Cheesman trout are loving life. Anglers should prepare themselves for hatches of midges, caddis, PMDs, and golden stones. Dont be afraid to throw some big-bites, as scuds, leeches, craneflies, and stoneflies are also great options, especially for an attractor. Effective droppers include Buckskins, Barr Emergers, Mercury Midges, Barrs Graphic Caddis, RS 2s, and Mercury Flashback Pheasant Tails.

Effective Patterns: #20 Juju Baetis, #14-16 UV Scud, #10 Pats Rubber Legs, #20 Chocolate Foam Wing Emerger, #22 Stalcups Baetis, 20-22 Mercury Midge, #18 Buckskin, #20 Pale Olive Midge Larva, #20 Sparkle Dun, #18 Barr Emerger, #18 Mitchells Split Case, #14-16 Elk Hair Caddis, #14 Yellow Stimulator, #24 Stalcups Trico, #16 Barrs Graphic Caddis, #16 Mercers Swing Caddis, #22-24 Matts Midge, #22-24 Griffith Gnat, and #20-22 Parachute Adams.

This report was written by The Blue Quill Angler: http://www.bluequillangler.com
303-674-4700

Aug 04 FlyCast River Forecast

Technicality: 4/5

Flows decreased by roughly 75 cfs last Friday, which helped improve water clarity. At 525 cfs, the wider sections of the river continue to fish the best and the majority of trout are still concentrated along the banks, outer seams and slack water. Hopper droppers/dry droppers are a great place to start, especially when targeting the banks. The trico hatch is slowly improving, so keep an eye out for hatch activity between 8 am and 11 am. Aside from that, Amys Ants and #12 Chubby Chernobyls will get the attention of trout looking up. Trailing a JuJu PMD, black RS2 or Chocolate Foam Wing Emerger will pick up trout feeding sub-surface. Heavy nymph rigs will work well when fishing the outer seams and slack water. You still cant go wrong leading with a Pats Rubber Legs, leech, worm or pink/green scud. Baetis and caddis patterns will do the trick below your large lead/attractor pattern. Dont be stingy with weight. If your indicator is moving faster than the current, add more weight.

Ideal Days to Fish: Tuesday, Saturday & Sunday

Suggested Flies:

Sub-surface: red Copper John (#18-20), RS2 (#20-22), JuJu Baetis (#22-24), JuJu PMD (#20-22), WD 40's (#22-24) Chocolate Thunder (#20-22), Barr's Emerger (#20-22), Pheasant Tails (#18-22), Black Beauty (#22-24), Zebra Midge (#18-22), Mercury Midge (#22-24), Top Secret Midge (#22-24), Disco Midge (#22-24), Electric Caddis (#16-18), Super Pupa (#16-18), Rainbow Warrior (#20-22), Pats Rubber Legs (#10-12), Little Yellow Sloan (#14-16), leech patterns, scuds and San Juan Worms.

Surface: Parachute Adams (#20-24), Parachute PMD (#20-22), Elk Hair Caddis (#16 - 18), Chubby Chernobyl (#10-12) and Griffiths Gnat (#22 - 26).



This report was written by FlyCast River Forecast: https://www.flycastusa.com/

Aug 04 FlyCast River Forecast

Technicality: 4/5

Cheesman Canyon flows are still a bit high for this time of year, but with recent decreases, weve seen hatch and surface activity improve. Early morning and evening hours have been the most productive for dry fly fishing. Keep an eye out for tricos and midges in the morning. In the afternoon, PMDs, BWOs, caddis and yellow stones will make an appearance if the conditions are right. If youre on the river after a brief rainstorm, be ready to throw dries. Amys Ants trailed by baetis emergers are productive when fished along the banks. If youre fishing deeper water, nymph rigs lead with large bugs trailed by smaller emerger patterns are the way to go. Weight is your best friend right now when nymphing, so if you havent seen any action, add more weight. Youll get snagged more frequently, but itll be worth it. Brown/black Pats Rubber Legs, crane fly larva, leeches, Electric Caddis, JuJu PMDs, Barrs Emergers, Flashback Pheasant Tails and Black Beauties are all great patterns for a nymph rig.

Ideal Days to Fish: Tuesday, Saturday & Sunday

Suggested Flies:

Sub-surface: RS2 (#20-22), Barr's Emerger (#20-22), JuJu PMD (#20-22), Chocolate Thunder (#22-24), JuJu Baetis (#20-22), Pheasant Tail (#20-22), WD 40 (#20-22), Mercury Midge (#22-24), Black Beauty (#22-26), Zebra Midge (#20-24), Blood Midge (#20-22), Disco Midge (#20-22), Electric Caddis (#16-18), Super Pupa (#16-18), Pats Rubber Legs (#10-12), Little Yellow Sloan (#14-16), leech pattern and San Juan Worm.

Surface: Parachute Adams (#22-24), Parachute PMD (#20-22), Elk Hair Caddis (#16-18), Griffiths Gnat (#20-22) and Chubby Chernobyl (#10-12).



This report was written by FlyCast River Forecast: https://www.flycastusa.com/

Jul 29 FlyCast River Forecast

Technicality: 4/5

Sitting at 650 cfs, the South Platte through Deckers is still high and slightly off color. Considering the weekend storms, we dont anticipate the color to improve until later on in the week. Trout are still holding tight to the banks for most of the day, so find a section where the banks are clear of shrubbery. This will help you make clean casts along the bank and outer seams without getting in the river. We fished a section of Deckers last Friday and spooked plenty of trout when we were forced to wade along the banks. Hopper droppers and dry dropper setups are producing well right now, especially when fished along the shallow banks. Chubby Chernobyls, Amys Ants andYellow Sallys are great dry patterns for a dry dropper setup. Behind one of those patterns, trail a red/pink San Juan Worm, pink scud, Pats Rubber Legs or JuJu PMD. If youre nymphing, use a yarn indicator to limit surface disturbance when you cast.

Ideal Days to Fish: Wednesday, Saturday & Sunday

Suggested Flies:

Sub-surface: red Copper John (#18 - 20), RS2 (#20 - 22), JuJu Baetis (#22 - 24), WD 40's (#22 - 24) Chocolate Thunder (#20 - 22), Stalcup's Baetis (#20 - 22), Pheasant Tails (#18 - 22), Black Beauties (#22 - 24), Zebra Midge (#18 - 22), Mercury Midge (#22 - 24), Top Secret Midge (#22 - 24), Disco Midge (#22 - 24), Electric Caddis (#16 - 18), Super Pupa (#16 - 18), Rainbow Warrior (#20 - 22), Pats Rubber Legs (#10-12), Little Yellow Sloan (#14-16), leech patterns, scuds and San Juan Worms.

Surface: Parachute Adams (#20 - 24), Elk Hair Caddis (#16 - 18), and Griffiths Gnat (#22 - 26).



This report was written by FlyCast River Forecast: https://www.flycastusa.com/

Jul 29 FlyCast River Forecast

Technicality: 4/5

Flows are up in Cheesman Canyon (606 cfs) and while fishable sections are limited, big days can be had if you adjust your approach. Stick to the banks and focus on the soft water. With trout primarily holding along the banks, outer seams and eddies, do your best to fish from the bank. Dry droppers and nymph rigs are working well right now. Fish a dry dropper/hopper dropper if youre targeting the shallow banks, but if you fish the deeper water, a heavy nymph rig will produce the best results. Chubbies, PMXs and Amys Ants are great dry fly patterns for a dry dropper setup. If you catch a PMD hatch, trail a PMD Emerger or JuJu PMD behind one of those flies. If you see them rising, dont hesitate to switch to a Parachute PMD. Sub-surface, trout are keyed in on red/pink San Juan Worms, scuds, leeches, crane fly larva, caddis larva and PMD emergers. When nymphing, lead with one of the larger patterns and trail one or two PMD/baetis emergers behind it. Dont forget to let your line swing at the end of the line! Youll be surprised how many trout bite on the swing.

Ideal Days to Fish: Wednesday, Saturday & Sunday

Suggested Flies:

Sub-surface: RS2 (#20 - 22), Stalcup's Baetis (#20 - 22), Chocolate Thunder (#22 - 24), JuJu Baetis (#20 - 22), Pheasant Tail (#20 - 22), WD 40 (#20 - 22), Mercury Midge (#22 - 24), Black Beauty (#22 - 26), Zebra Midge (#20 - 24), Blood Midge (#20 - 22), Disco Midge (#20 - 22), Electric Caddis (#16 - 18), Super Pupa (#16 - 18), Pats Rubber Legs (#10-12), Little Yellow Sloan (#14-16), leech pattern and San Juan Worm.

Surface: Parachute Adams (#22 - 24), Elk Hair Caddis (#16 - 18), Griffiths Gnat (#20 - 22) and Chubby Chernobyl (#10-12).



This report was written by FlyCast River Forecast: https://www.flycastusa.com/

Fly Shop Directory

Website: http://www.anglersall.com/
Phone Number: (303) 794-1104
Address: 5211 South Santa Fe Drive, Littleton, CO 80120
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Address: 100 N. Main St., Ste 206, Breckenridge, CO 80401
Website: http://www.flies-n-lies.com/
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Address: 8570 S. Hwy. 67, Deckers, CO 80135
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Website: http://www.thepeakflyshop.com
Phone Number: 719-260-1415
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Website: http://troutsflyfishing.com
Phone Number: 303-733-1434
Address: 1303 E. 6TH Ave, Denver, CO 80218