Blue Stream Fly Fishing
Fly Fishing Report for:

Henry's Fork - St Anthony - Idaho

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

Water Flow Chart

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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

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Directions To Location

Hatch Chart

Month Hatch Time of Day Recommended Fly Sizes Popular Fly Patterns
January Midges Late morning to early afternoon #20-24 Zebra Midge
February Midges Late morning to early afternoon #20-24 River Keeper Midge
March Midges, BWO Late morning to early afternoon #18-20 WD-40, Barr's BWO Emerger
April Midges, BWO, March Browns Late morning to early afternoon #14-16 Pale Morning Dun
May Caddis, March Browns Late afternoon to evening #14-16 Elk Hair Caddis, March Brown Dun
Salmonfly, Stonefly Late afternoon to evening #6-8 Rogue Foam Salmonfly, June Bug
June Green Drakes, PMDs Mid-late afternoon #14-16 Green Drake Paradrake, Pale Morning Dun
Stoneflies, Caddis Late afternoon to evening #6-8, #14-16 Rogue Foam Stone, Elk Hair Caddis
July Drakes, PMDs Mid-late afternoon #14-16 Rusty Spinner, Parachute Adams
Stoneflies, Caddis Late afternoon to evening #6-8, #14-16 Rogue Foam Stone, Elk Hair Caddis
August PMDs, Terrestrials Mid-late afternoon #14-16 Parachute Adams, Ant Patterns
September Terrestrials, Tricos Mornings #20-24 Ant Patterns, Trico Spinners
October BWOs, Midges Late morning to early afternoon #18-24 BWO Emerger, Zebra Midge
November Midges Late morning to early afternoon #20-24 River Keeper Midge
December Midges Late morning to early afternoon #20-24 Zebra Midge

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 Henry’s Fork region of St. Anthony offers prime fishing spots to explore. Particularly for Fly fishing, few sites are proven to be ideal for individuals seeking dazzling spots.

  • Box Canyon: Known for its remarkable trout fishery. Its wealth of riffles, pools, and pockets provide excellent fly fishing experiences.
  • Railroad Ranch: This stretch of Henry’s Fork offers clear waters where trout can easily be spotted. It’s considered a challenging place, thus advisable for experienced anglers.
  • Cardiff Bridge: If you seek big fish, the section around Cardiff Bridge brings a lot of potentials. It’s very productive during the hatch season specifically.
  • Warm River to Ashton: Offering a mix of fast and slow waters, it’s a wonderful spot for both novice and skilled fly fishers.
  • Lower Mesa Falls: This location is famous for its Fall-run of Brown trout along with breath-taking scenery.

Best Access Points

Henry’s Fork is an angler’s paradise with some of the best fly fishing spots in the U.S. Notably, the St. Anthony area offers numerous, easily accessible popular fishing points.
  • Vernon Bridge: Access is on the southeast and northwest corners of the bridge. This location is great for different species of trout.

  • Chester Access: You can find it upstream from Chester on the south side. Provides a big area for fishing worms and spinners for rainbow trout.

  • Salem Ponds: Located south of Salem 1st West, with parking available along the highway. You can catch good-sized fish here.

  • Fun Farm Bridge: You can access it at the south side of Fun Farm Bridge. Known for large brown and rainbow trouts.

These are some of the best access points for fly fishing in Henry’s Fork – St. Anthony. Each offers unique fishing opportunities that will keep you coming back for more.

Local Fish

  • Trout: Notably, the most common pick by fly fishermen.
  • Brown Trout: Not only do they grow to large sizes, but they strike ill-constructed flies without mercy making them an exciting catch.
  • Rainbow Trout: Highly sought after due to their acrobatic fight techniques after being hooked.
  • Cutthroat Trout: Named after the vivid orange-red streak on the throat, they are often found in the purest and most remote waters.
  • Brook Trout: Although not native to the area, they have adapted well and are abundant in the region.
  • Mountain Whitefish: A native species related to the trout, it’s often overlooked by fishermen targeting trout but is great for practice and quite abundant.
  • Arctic Grayling: Best known for its distinctive, large dorsal fin and beautiful coloring – a real trophy catch.
  • Pike: Known for their aggressive strikes and finicky predatory habits, these species aren’t for the faint-hearted.

About The River

Henry’s Fork-St Anthony is an esteemed site for anglers worldwide. Its initial name derived from Major Andrew Henry, a fur trader in the early 1800s. Later, it was known as St Anthony due to the established town on the river’s bank.

The abundant, clear waters are famous for fishing, particularly Fly-Fishing, with popular fishes being the Rainbow Trout and the Brown Trout. Over the years, conservation efforts have preserved the rich ecosystem.

  • 1820: Andrew Henry, from Missouri Fur Company, first exploits the river.
  • Late 1800s: The town of St Anthony arises.
  • 1935: Warm River Campground opens, attracting anglers and becoming an integral part of fishing history.
  • 1968: Preservation action by Henry’s Fork Foundation ensures fish populations thrive.

As you cast your line into the gleaming water, you’re not just fishing – you’re becoming a part of the rich tapestry that is the story of Henry’s Fork-St Anthony.

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