Williams Fork River
Rob Herrmann Photography

Williams Fork River

Difficulty Intermediate/Advanced
Ideal Days To Fish 10/14, 10/17 & 10/19

Weekly Report

Report DateOct. 14, 2021

Flows on the Williams Fork have been somewhat erratic over the last few weeks with sporadic releases from the dam. However, as it stands they are sitting at a comfortable level. Trout have room to spread out throughout the day, but are gravitating to the deeper runs, pools and pockets. In the early hours trout will hold in the slack water and along the banks. The nymph rig continues to produce the best results, but we’re seeing some good action on smaller streamers and dry flies as well. When nymphing, small and imitative midge and baetis will produce the best results, but don’t shy away from larger searcher patterns like a Pat’s, Egg Sucking Leech or San Juan Worm. Trail any of the aforementioned patterns with one or more smaller imitative midge or baetis like a Zebra Midge, Black Beauty, Top Secret, RS2, Darth Baetis or Juju Baetis. Play with your depth throughout the day as it can often be the key to success. Hatch activity has been good as well with midge and BWOs making regular appearances throughout the day. Come prepared with a few Parachute Adams, Parachute BWOs, BWO Comparaduns, Griffith’s Gnats, Cluster Midges and Matt’s Midges.

Recommended Flies

River Flow

Flow Region
FlyCast Collective Ad

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 off 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 its 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 tailwater 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.