Williams Fork

Weekly Overview:

November 11, 2019:

  • Technicality: 2/5

  • The Williams Fork Stream Restoration Project began October 1. The CPW and Denver Water are performing stream restoration below the reservoir to the confluence of the Colorado. The project is expected to take anywhere from 4 to 6 weeks. During this time, you can expect low flows, heavy machinery and muddy water. This will take a toll on the Colorado Confluence as well. As such, you're better off fishing elsewhere until the project concludes. Stay tuned for updates and project timelines.

  • Ideal Days to Fish: NA

  • Go to flies:

    • Surface - Parachute Adams (#20-24), Elk Hair Caddis (#16-18), Griffiths Gnat (#22-24), Chubby Chernobyl, Hippie Stomper and Amy's Ant (#10).

    • Subsurface - Frenchie (#16-20), Guide's Choice Hare's Ear (#16-20), Psycho Prince Nymph (#18-20), Pheasant Tails (#18-20), Copper John (#16-18), RS2's (#20-22), JuJu baetis (#20-22), WD 40 (#20-22), Black Beauties (#20-22), Top Secret Midges (#22-24), Mercury Midge (#22-24), Foam Wing Emerger (#20-22), Pat's Rubber Legs (#12-14), Electric Caddis (#16-18), Super Pupa (#16-18), San Juan Worm, Flossies 

      • Need flies for your trip? FlyCast has collaborated with our friends at Anglers All ​to package a dozen flies that are hot on the Williams Fork right now - Click here for hand selected flies

Willy FLow.png
Credit: U.S. Geological Survey 
Department of the Interior/USGS
Upper CO_Willys Weather.png
Weather Provided by Weather Underground

Detailed River Info:


The Williams Fork River a.k.a Willy's Fork, is a two mile tail water below the Williams Fork Reservoir that feeds into the upper Colorado River. The most common access point to the river requires a 20 minute walk but trust us, the serenity and beauty is well worth the hike. The Willy's Fork provides a more peaceful outing compared to the other tail water options in Colorado.The Cotton Wood Tree lined river consists of deep runs, pools and pocket water. If you're looking to spend some time on the river make sure to bring plenty of water, sunscreen and beer. 


Let us start of by saying this is hands down one of the most beautiful rivers that we've ever fished. A bad day on this river (which isn't likely), is still an amazing day because of the scenery. The Willy's Fork provides anglers with a wide variety of fishing options due to it's abundance of deep runs and pools as well as pocket water and undercut grass banks. If you're fishing for numbers, targeting the banks will be your best bet. If you're searching for the 20 - 24 in. trout, add some weight and get down deep in the pools and runs. Besides the typical Caddis and Mayfly hatches, the Willy's Fork experiences a solid Stonefly hatch similar to the Colorado River. The most common trout found in this stretch are Browns and Rainbows. 


River Access:

The tail water section of the Williams Fork is located in the town of Parshall, CO. Anglers can access the river from two locations. You can park at the Williams Fork Division of Wildlife parking lot located at the intersection of county road 3 and county road 36. Parking at this location will require a 20 minute hike to the water. If you're looking to fish from the confluence, park in the town of Parshall off of Highway 40 and wade across the Colorado River. 

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