Williams Fork

Weekly Overview:

May 25, 2020:

  • Difficulty: Intermediate/Advanced

  • Flows on the Williams Fork continue to climb higher and have doubled since last week. At this flow, trout are being pushed to the banks and soft water. When nymphing, you’re going to want to toss a stonefly like a Pat’s, leech, worm or egg into the mix. Trail any of the aforementioned lead flies with smaller attractor patterns like a Rainbow Warrior, Copper John or Frenchie. However, do not disount the smaller midge and baetis patterns. Hatch activity has been great so come prepared to fish some dries. Look for trout to rise in areas with cover, particularly along the banks with brush and trees. Parachute Adams, Parachute BWOs and Elk Hair Caddis  make for great point flies when fishing a double dry fly rig. The front end of the week will be the most productive with stable air pressure. Otherwise, on the tail end of the week, small streamers could prove effective with sustained low air pressure and cloud cover. 

  • Ideal Days to Fish: Monday through Thursday

  • Go to flies:

    • Surface - Parachute Adams (#20-24), Griffiths Gnat (#22-24)

    • 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

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. 

© 2019 flycastusa.com

Get Social

  • Instagram Social Icon
  • Facebook Social Icon