Sweetwater River
river in Wyoming
The Sweetwater River played a significant role in westward expansion and now offers a unique, off-the-beaten-path fly fishing adventure in a high desert landscape.
Conditions right now
No USGS gauge is linked to this water yet, so we can't chart flows.
Blue-Winged Olives (Baetis sp
- 01Blue-Winged Olives (Baetis sp.) are peaking this month, especially on overcast afternoons.
- 02Midge activity is strong and consistent, offering reliable subsurface opportunities throughout the day.
- 03Deeper runs, slower pools, and areas with good structure are key focus points as water temperatures drop.
- 04Olive Woolly Buggers and Meat Whistles are excellent for aggressive, larger trout looking for substantial meals.
- 05On warmer fall days, terrestrials like hoppers can still be effective along grassy banks.
Past reports week by week
5 weeksWhat to tie on
Picked from reports, hatches and the season. Tap a fly for the recipe and where else it works.
Blue-Winged Olive Comparadun
Blue-Winged Olives are a primary fall hatch on freestone rivers, making this low-profile dry fly essential for selective trout feeding on emergers and adults.
Meat Whistle
This streamer is excellent for targeting aggressive, larger brown trout that are looking for a substantial meal in the colder fall water, imitating baitfish.
Buy at AmazonJujubaetis
Jujubaetis are excellent Baetis nymph imitations, highly effective when fished subsurface as trout key in on emerging nymphs during fall hatches.
Buy at AmazonZebra Midge
Midges are a consistent food source year-round, and this weighted nymph is particularly effective in fall for getting into the strike zone in slower pools and deeper runs.
Buy at AmazonBlood Dot Egg
As fall progresses, trout begin to key into egg patterns, making this a high-protein offering that imitates salmon and trout eggs.
Buy at AmazonOlive Woolly Bugger
A versatile and reliable streamer pattern, the Olive Woolly Bugger effectively imitates leeches and baitfish, enticing aggressive strikes from larger trout in colder fall waters.
Schroeder’s Parachute Hopper
On warmer, sunnier days in early fall, terrestrial activity can still be a factor, especially along grassy banks where hoppers might fall into the water.
Hare's Ear Nymph
A classic and versatile searching nymph, the Hare's Ear Nymph effectively imitates a wide range of active aquatic insects and is a year-round staple.
Buy at AmazonWhere to fish and who to ask
Independence Rock State Historic Site
While primarily a historic site, there is public river access nearby, offering a unique fishing experience near a famous landmark.
Jeffrey City Area
Access points near the former uranium mining town of Jeffrey City, providing entry to the river's middle sections.
Split Rock Section
An iconic landmark with public access to the river, offering a scenic backdrop to your fishing.
Get Sweetwater River reports by email
Save this water and we'll email you a weekly summary of conditions, hatches and what's working.
Wyoming 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.
Best Fly Fishing Waders of 2025 – Breathable vs. Neoprene
Expert comparison of breathable and neoprene waders with top 2025 models for every budget and fishing condition.
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.
Quick answers
Common questions about Sweetwater River.
What flies work best on Sweetwater River?
Our top scored fly patterns for Sweetwater River right now are Comparadun (BWO) (80% confidence), Tungsten Bead Pat's Rubber Legs (80% confidence), San Juan Worm (80% confidence). These picks are scored from recent fishing reports, hatch data, and seasonal patterns.
What fish species are in Sweetwater River?
Sweetwater River holds Brown Trout, Rainbow Trout. See the species links on this page for fly recommendations and seasonal behavior for each.
What are current flow conditions on Sweetwater River?
Live USGS streamflow readings for Sweetwater River are charted in the sidebar of this page and updated automatically from the nearest gauge.
Is Sweetwater River fishing well right now?
We publish a fresh bite report for Sweetwater River each week based on recent on-the-water intel. The current report — with conditions, hatches, and what's producing — is on this page.