Diamond Fork River
river in Utah
The Diamond Fork River is a tributary of the Spanish Fork River, flowing through a scenic canyon. It's managed as a wild trout fishery with special regulations in some areas. Anglers enjoy the solitude and the chance to catch native cutthroat.
Conditions right now
No USGS gauge is linked to this water yet, so we can't chart flows.
PMD and BWO hatches are expected to be active
- 01PMD and BWO hatches are expected to be active, particularly during the warmer, overcast afternoons.
- 02October Caddis are a significant fall hatch, capable of drawing aggressive dry fly takes.
- 03Consistent subsurface action can be found throughout the day with midge and stonefly nymphs.
- 04Wild brown trout are the primary target, especially in deeper runs, around structure, and less-pressured sections.
- 05Exploration of turn-offs and areas past the main campground is recommended for better opportunities.
Past reports week by week
9 weeksWhat to tie on
Picked from reports, hatches and the season. Tap a fly for the recipe and where else it works.
Tungsten Bead Pat's Rubber Legs
Large stonefly nymphs are a significant food source year-round, especially in colder fall water, providing a substantial meal for trout.
Buy at AmazonPMD Sparkle Dun
PMD emergers are a prime food source as fish key into the film during fall hatches, mimicking vulnerable insects.
Zebra Midge
Midges are a consistent, primary food source year-round, making this pattern excellent for subsurface feeding in colder fall water.
Buy at AmazonBaetis Nymph
Baetis nymphs are active year-round and particularly effective during fall BWO hatch periods, providing a consistent subsurface food source.
Woolly Bugger (Olive)
A versatile year-round streamer, effective for imitating leeches and baitfish that aggressive trout, particularly brown trout, will key on in colder fall flows.
Blue-Winged Olive (BWO) Comparadun
BWOs are a consistent fall hatch on overcast days, and this low-profile dry is excellent for selective trout feeding on adults and emergers.
Buy at AmazonPMD (Pale Morning Duns)
Pale Morning Duns are actively hatching in fall and were specifically noted in early October on this river, providing a key food source for trout.
Soft Hackle Wet (Partridge & Orange)
Caddis pupae and emergers are active throughout fall; this pattern is excellent when swung through the current, imitating vulnerable insects.
Buy at AmazonOctober Caddis (Dry)
October Caddis are the largest caddis hatch of the year in many western rivers and are very active during fall, provoking aggressive strikes.
Buy at AmazonWhere to fish and who to ask
Fifth Water Hot Springs Trailhead
Access point for the lower sections of the river, especially good for hiking in and finding less pressured water.
Three Forks Area
Confluence of the Left Fork and Right Fork of Diamond Fork, offering diverse water and good access.
Fly shops within 40 miles
Trout Creek Flies
Eddie Robinson's Fly Fishing
Fly Fish Food
Fish Heads Fly Shop
Get Diamond Fork River reports by email
Save this water and we'll email you a weekly summary of conditions, hatches and what's working.
Utah season by season
What changes on the water through the year, with the flies for each season.
Read before you go
Winter Fly Fishing: Essential Cold Weather Tips & Tactics
Master winter fly fishing with proven cold weather strategies, gear selection, and tactics for catching trout when temperatures drop.
Fly Line Types Guide: WF, DT, Running & Shooting Heads
Master fly line selection with our comprehensive guide to weight forward, double taper, running lines, and shooting heads for every fishing situation.
Fly Fishing Pack vs Vest: Which Setup Is Right for You?
Compare fly fishing packs and vests to find the perfect gear setup for your angling style and fishing conditions.
Best Fly Fishing Sunglasses: Lens Color & Polarization Guide
Master lens color selection and polarization technology for superior vision and fish detection on the water.
Fly Fishing Nets – Rubber vs. Nylon & Why It Matters for Fish
The net you choose dramatically impacts fish survival. Here's why rubber nets are superior to nylon for catch-and-release success.
Best Budget Fly Fishing Combo Setups for Beginners
Expert guide to affordable fly fishing combos that won't break the bank but deliver quality performance for new anglers.
Quick answers
Common questions about Diamond Fork River.
What flies work best on Diamond Fork River?
Our top scored fly patterns for Diamond Fork River right now are Tungsten Bead Pat's Rubber Legs (80% confidence), Isonychia Dun (80% confidence), Hopper (80% confidence). These picks are scored from recent fishing reports, hatch data, and seasonal patterns.
What fish species are in Diamond Fork River?
Diamond Fork River holds Bonneville Cutthroat Trout, Rainbow Trout, Brown Trout. See the species links on this page for fly recommendations and seasonal behavior for each.
What are current flow conditions on Diamond Fork River?
Live USGS streamflow readings for Diamond Fork River are charted in the sidebar of this page and updated automatically from the nearest gauge.
Is Diamond Fork River fishing well right now?
We publish a fresh bite report for Diamond Fork River each week based on recent on-the-water intel. The current report — with conditions, hatches, and what's producing — is on this page.