Blue Stream Fly Fishing
Fly Fishing Report for:

Williams Fork - Below Williams Fork Reservoir - Colorado

Hatch Chart - Best Access/Spots - Local Fish - About

Water Flow Chart

Using Water Flow Charts & Weather Reports: Begin with our water flow charts to grasp stream velocity and volume – look for stable or rising trends to pinpoint ideal fishing times. Learn to interpret sudden spikes or drops, which can indicate potential challenges. Next, consult our weather reports to understand ambient conditions. Pairing the two, you can anticipate fish behavior, choose the right gear, and select the best fishing spots. Use these tools together for a holistic approach to your next fishing adventure.

In-Depth Weather

Directions To Location

Hatch Chart

Month Hatch Time of Day Recommended Fly Sizes Popular Fly Patterns
January Midge Midday #18 - #22 Zebra Midge, Black Beauty
Winter Stonefly Afternoon #16 - #18 Micro Stone, Black Stonefly Nymph
Baetis Late Afternoon #20 - #22 RS2, Juju Baetis
February Midge Midday #18 - #22 Zebra Midge, Griffith's Gnat
Winter Stonefly Afternoon #16 - #18 Micro Stone
March Midge Midday #18 - #22 Zebra Midge, Griffith's Gnat
Blue-winged Olive (BWO) Afternoon #18 - #20 Parachute BWO, Pheasant Tail Nymph
April Midge Midday #18 - #22 Zebra Midge
Blue-winged Olive (BWO) Afternoon #18 - #20 Parachute BWO
May BWO Afternoon #18 - #20 Emerger Patterns, Pheasant Tail Nymph
Caddis Evening #14 - #18 Elk Hair Caddis, X-Caddis
June Golden Stonefly Midday #10 - #14 Golden Stone Nymph, Stimulator
Caddis Evening #14 - #18 Elk Hair Caddis
July Golden Stonefly Midday #10 - #14 Golden Stone Nymph
Caddis Evening #14 - #18 Elk Hair Caddis, X-Caddis
August Terrestrials Midday #10 - #16 Hopper Patterns, Ants, Beetles
Caddis Evening #14 - #18 Elk Hair Caddis
September Terrestrials Midday #10 - #16 Hopper Patterns, Ant Patterns
Blue-winged Olive (BWO) Afternoon #18 - #20 Parachute BWO, Pheasant Tail Nymph
October Blue-winged Olive (BWO) Afternoon #18 - #20 Emerger Patterns, Pheasant Tail Nymph
Midge Midday #18 - #22 Zebra Midge
November Midge Midday #18 - #22 Zebra Midge, Griffith's Gnat
Blue-winged Olive (BWO) Afternoon #18 - #20 Parachute BWO
December Midge Midday #18 - #22 Zebra Midge, Black Beauty
Winter Stonefly Afternoon #16 - #18 Micro Stone, Black Stonefly Nymph

While we strive to ensure the precision of our hatch charts, some reflect broader river region insights. Through ongoing partnerships with local guides and fly shops, we’re committed to refining our data. Should you notice any inconsistencies or have feedback, we welcome you to reach out. 

Best Fishing Spots

The Williams Fork area, situated just below Williams Fork Reservoir, is a prime location for fly fishing enthusiasts. Few among the best spots for fly fishing in this area include:

  • Middle Fork: A deep, swift water section perfect for abundant rainbow and brown trout.
  • South Fork: Renowned for its excellent dry fly fishing opportunities due to the plentiful insect hatches, especially in the summer.
  • Williams Fork Reservoir Outlet: A tailwater stretch with consistent water temperatures and food supply for trout, ideal for year-round fishing.
  • Public River Access Points: Offering various spots ideal for wading and bank fishing.

Fly fishing on the Williams Fork provides an unmatched experience of tranquility combined with the thrill of catching a variety of trout species.

Best Access Points

If you’re an angler seeking prime fly fishing spots on the Williams Fork – Below Williams Fork Reservoir, there are a few key access points to consider:

  • Williams Fork River Access Point: Accessible via County Road 3 from Parshall, offering abundant tailwater with a healthy population of Brown and Rainbow Trout.
  • Pathfinder Park: This long stretch of the river starts from the reservoir’s day use area and follows the course up to the upstream boundary of the city limits, providing an excellent place to fly fish.
  • Williams Fork Campground: Accessed by County Road 33, this site near the reservoir also provides river access.
  • Kemp Breeze State Wildlife Area: Popular among locals and visitors alike, it offers wide access to the river.

Remember to respect private properties around the area and always practice catch and release to sustain the rich fly fishing heritage of the Williams Fork River.

Local Fish

  • Brown Trout: Known for their strong fight and beautiful coloration, brown trout are a prime target for anglers on the Williams Fork.
  • Rainbow Trout: Rainbows are favored by many fly fishers because of their acrobatic fights and eagerness to take a fly.
  • Brook Trout: Smaller than browns and rainbows, brook trout are beautiful sportfish that can sometimes be found in abundance.
  • Cutthroat Trout: Native to the western United States, cutthroat trout are a thrill to hook into on the Williams Fork.
  • Mountain Whitefish: These are often overlooked by anglers, but can put up a great fight and are plentiful in the river.
  • Northern Pike: These are aggressive predators that can reach large sizes and are a thrilling catch on a fly rod.
  • Arctic Grayling: These unique and beautiful fish are a rare catch in the area, making them a coveted species for fly anglers.
  • Lake Trout: While more commonly targeted in the reservoir itself, lake trout occasionally make their way into the river and offer a challenging fight.

About The River

One of the hidden gems of Colorado is the Williams Fork Below the Williams Fork Reservoir. Replete with history and bursting with natural beauty, it’s a place that surprises you in the best possible sense. The valley was originally inhabited by the Ute Indians, offering a glimpse into pre-Columbian America.

Founded in the late 19th Century, it heralded the era of reservoirs, a testament to engineering marvels. The Williams Fork Reservoir, which serves as a major part of Denver’s water supply, became an integral part of the valley in the 1950s.

  • The fertile banks of the reservoir are home to a diverse range of wildlife including elk, mule deer, and various bird species.
  • Furthermore, for those with an adventurous spirit, Williams Fork offers exceptional fishing. Trout fishing here is an experience like no other.

The Williams Fork – Below Williams Fork Reservoir holds history, wildlife, and exciting recreational opportunities. A hidden marvel!

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