Truckee River Fly Fishing Report September 2026 | Fall Conditions & October Outlook
September has brought a noticeable shift from summer toward fall on the Truckee River. Cooler nights and shorter days have helped water temperatures recover across much of the river, and the cool period we saw in the middle of the month made a significant difference in both fish activity and the amount of river we can comfortably fish.
The fishing has become more varied as well. Midges and caddis are still important, but PMDs, sporadic mahogany duns, and the first signs of Blue-Winged Olives are adding more options. The California canyon has been fishing consistently, while the Nevada side—especially from the state line through downtown Reno—has shown excellent bug activity and has been producing some of the larger fish we have seen lately.
Fall Is Here, but Keep Checking Water Temperatures
September cooling has opened up much more of the Truckee, but conditions can still vary considerably from the California canyon to Reno and the lower river. Warm late-September afternoons can still push lower sections toward stressful temperatures, so check the gauge nearest the section you plan to fish and use a stream thermometer when you are on the water.
Truckee River Fishing Report September 2026 Summary
The biggest change this month has been the transition from summer heat into more comfortable fall conditions. Cooler nights have helped the river recover overnight, and the mid-September cool spell brought water temperatures down into a much better range across most sections. We are still paying attention to warm afternoons, but compared with July and August the overall fishing window has expanded considerably.
The California canyon has fished well on most days. Through Nevada, we have been finding larger fish more consistently, and the stretch from the state line through downtown Reno has had some of the most noticeable insect activity. When the bugs are moving, the fish in this section have been noticeably more active.
The lower river near Lockwood is also starting to come back into play. Morning fishing has been the best option there, but this section needs to be treated differently than the Sparks gauge alone might suggest. In our experience, water near Lockwood can run roughly 4–7°F warmer than the Sparks temperature gauge, and on warmer days we have still seen temperatures climb above 68°F. Continue carrying a thermometer if you are fishing the lower river.
September has also brought more variety in the bugs. August was heavily dominated by midges and caddis. We are now seeing midges, caddis, PMDs, occasional mahogany duns, and increasing BWO activity. That variety is a good sign of the seasonal change and gives anglers more options when selecting both nymphs and dries.
Truckee River Water Temperatures Are Improving
The Lower River Still Deserves Extra Attention
Cooler nights have helped tremendously, and most of the river is now spending much more time in an acceptable temperature range. That does not mean the thermometer can go back in the truck. Warm late-September days can still create afternoon issues, especially as you move east through Reno and toward Lockwood.
Current Fly Fishing treats 68°F as a serious warning point and generally stops targeting trout as temperatures approach it. At 70°F, we consider the river too warm for catch-and-release trout fishing. Always use the actual temperature where you are standing rather than assuming a nearby gauge represents the entire section.
This is especially important below Sparks. The Sparks gauge is a useful reference, but our on-the-water readings near Lockwood can be several degrees warmer. If you are fishing the lower river on a warm day, morning is still the safest and most productive window.
Insect Hatches & Fly Recommendations
Current Hatch Activity
- Midges: Still one of the most consistent food sources and a good choice throughout the river.
- Caddis: Caddis remain active and continue to be an important part of the September mix.
- PMDs: PMD mayflies are still showing and can be worth matching when you see activity.
- Mahogany Duns: We have started seeing sporadic mahogany dun activity as fall conditions settle in.
- Blue-Winged Olives: BWOs are beginning to show more consistently and should become increasingly important as we move into October.
- October Caddis: Keep an eye out for the first October caddis as we move deeper into fall.
Recommended Nymphs
- Spanish Perdigon / quill-body perdigon #16–20
- Black or brown midge patterns #18–22
- Small olive BWO nymphs #16–20
- Flashback Pheasant Tail #16–20
- PMD-style nymphs #16–18
- Olive or green caddis larvae #14–18
- Mahogany mayfly nymphs #14–18
- Stonefly or crayfish anchor patterns #6–10
Recommended Dries
- BWO dries and emergers #16–20
- Parachute Adams #16–20
- PMD dries #16–18
- Mahogany dun patterns #14–18
- X-Caddis / small caddis adults #14–18
- Midge dries and emergers #18–22
Recommended Streamers
- Small olive or black sculpin patterns
- Compact jig streamers #8–12
- Black or olive leech patterns
- Small baitfish profiles
- Crayfish patterns through deeper runs and buckets
For more fly-selection guidance, visit our Truckee River Fly Patterns page.
Water Flows, Temperatures & Float Conditions
Flows are likely to become a bigger part of the conversation as we move from late September into October. Seasonal reductions in dam releases can reduce some sections quickly, and lower flows can affect both float access and how fast the river warms during a sunny afternoon.
For our Floriston float, roughly 500 cfs at Farad is still workable. Once flows approach about 450 cfs and below, that section becomes too bony for us to float efficiently. As flows drop, Lockwood becomes the primary lower-river float option, but water temperature still has to cooperate before that section makes sense for a full day.
This creates a fall balancing act: the California canyon may have comfortable temperatures but become too low to float, while the lower Nevada river may have enough water but still be too warm on certain afternoons. We choose the section based on the combination of flow, temperature, weather, and where the fishing has been most consistent.
Current River Conditions Snapshot
Farad flow, Farad water temperature, and Sparks water temperature are shown below using the latest available USGS readings. Use these as reference points, then check the actual water where you plan to fish—especially below Sparks.
Where Fish Are Holding
As water temperatures cool, trout are beginning to spread out from the fastest summer water. Riffles and pocket water are still productive, but deeper runs, softer seams, and transitional water are becoming more important again. Do not assume every fish is in fast current simply because that was the pattern a month ago.
Guide Tip
Do not use the Sparks temperature gauge as the final word for Lockwood. It is a valuable reference, but the lower river can be significantly warmer. We have seen Lockwood run roughly 4–7°F warmer than Sparks, which is enough to turn an acceptable reading at the gauge into marginal water farther downstream.
If you are heading east, bring a thermometer and take a reading when you arrive. On warmer days, fish the morning and be willing to change sections or call it when the temperature climbs.
Most of the river is now within ideal trout tempetures, fish are moving around and settling into different water types. Fish everything until you find a pattern.
Truckee River Fishing Outlook: Late September Into October
We expect the fall transition to continue as nights get longer and the river loses more heat overnight. Warm spells can still temporarily shorten the lower-river fishing window, but the overall seasonal trend is moving in the right direction.
Blue-Winged Olives should become increasingly important as we move into October. Once BWOs become a more dominant part of the daily insect activity, fall fishing can be excellent. Overcast days are especially worth watching because they can create stronger mayfly activity and some of the better dry-fly opportunities of the season.
Flows will also determine where we spend our time. Floriston remains a float option while Farad stays around the 500 cfs range, but once the river drops toward 450 cfs and below, we will shift more attention toward walk-and-wade fishing and lower-river float options when temperatures allow.
Looking Ahead: Brown Trout Spawning Season
Give Spawning Trout Room
From mid-to-late October and into November, brown trout begin transitioning into their spawning period. We often see that activity begin earlier in the upper reaches of the Truckee and then progress downstream as fall continues.
As this happens, be mindful of where you wade. Trout deposit eggs in shallow areas of clean, smaller gravel. Avoid walking through those areas whenever possible.
If you see trout paired up or grouped together in shallow gravel, leave them alone. It can be tempting to make a cast to a visible fish, but giving spawning trout space gives those fish—and the next generation—the best chance of success.
Instead, focus on deeper water where trout are staging and actively feeding. There are plenty of opportunities to catch fish during the fall without targeting trout that are actively spawning.
Now Booking Fall Truckee River Guide Trips
October is one of our favorite times to fish the Truckee. Cooler water, increasing BWO activity, streamer opportunities, and the chance for selective dry-fly fishing can make this one of the most interesting periods of the year.
Float sections are selected around current flows and temperatures. If the California canyon becomes too low to float, we can shift to walk-and-wade fishing or use lower-river float sections once water temperatures make a full day practical.
Plan Your Truckee River Fishing Day
Use this September 2026 Truckee River fishing report together with the live river-condition gauges before planning your day.
September Truckee River Fishing FAQs
Are Truckee River water temperatures still a concern in September?
They can be, particularly on the lower river. Cooler nights have improved temperatures across most of the Truckee, but warm afternoons can still push lower sections toward stressful levels. Current Fly Fishing treats 68°F as a serious warning point and considers 70°F too warm for catch-and-release trout fishing.
What time of day is best for Truckee River fly fishing in September?
Much of the river now has a longer fishing window because of cooler nights and shorter days. The lower river near Lockwood is different: morning remains the better choice on warmer days because temperatures there can rise considerably through the afternoon.
What flies are working on the Truckee River in September?
Midges and caddis remain important, with PMDs, sporadic mahogany duns, and BWOs adding more variety. Small mayfly and midge nymphs are reliable choices, while BWO, PMD, caddis, and mahogany dun dries can become relevant when fish are visibly feeding near the surface.
What sections of the Truckee River are fishing best right now?
The California canyon has been fishing consistently, while the Nevada side has been producing some of the larger fish we have seen recently. From the state line through downtown Reno, strong insect activity has helped keep fish active. Lockwood is beginning to fish again as well, but water temperature needs to be checked carefully.
Can you float the Truckee River in September?
Yes, depending on the section, flow, and water temperature. For Current Fly Fishing, the Floriston section remains workable around 500 cfs at Farad but becomes too bony as flows approach 450 cfs and below. Lockwood becomes a more important float option as flows drop, but lower-river temperatures need to be cool enough for a full day.
What should anglers expect on the Truckee River in October?
BWOs should become increasingly important, with overcast days offering some of the better dry-fly opportunities. Brown trout will also begin transitioning toward spawning behavior from mid-to-late October into November. Avoid shallow spawning gravel and leave paired or grouped fish alone, focusing instead on deeper staging and feeding water.
Fish the Truckee River with Current Fly Fishing
September has opened up more of the river, and October is shaping up to offer classic fall fishing opportunities. We will continue choosing each trip around the best combination of flows, temperatures, insect activity, and where the fish have been most active.
