Live conditions for every trout river in the U.S.
Angler Tech brings real-time USGS streamflow, water temperature, and public access information into one map — so you can check the water before you go.
What you get
Live USGS streamflow
Real-time CFS, gauge height, and water temperature for every gauged river in the country — refreshed every few minutes.
Current conditions
Compare current flow and water temperature before choosing when and where to fish.
Fly reference
Browse proven fly patterns, seasonal guidance, hook sizes, and presentation tips.
Access & wading safety
State DWR access points and boat ramps mapped, plus wading safety derived from live gauge readings.
Saved waters
Keep the rivers, lakes, gauges, and access points you care about easy to find.
Catch log & reports
Log catches with photos and conditions, and see recent community reports on the rivers you follow.
Fly fishing by state
River guides for the fly-fishing states — top waters, seasons, hatch timing, and license info in one place.
Rivers people fish
A handful of the most-fished waters in the U.S. — open the map to see current flow, water temperature, and nearby access points.
Field notes
All posts →- August 1, 2026 · 7 min read
How to Read a River: Where Trout Actually Hold and Why
How to read trout water: the seams, riffles, buckets, and current breaks that hold fish — and how to spot them before you make a cast.
- July 31, 2026 · 6 min read
When Is Hopper Season? How to Fish Grasshopper Patterns From August to First Frost
When hopper season starts, why wind and heat turn it on, and how to fish grasshopper patterns and hopper-dropper rigs through late summer.
- July 23, 2026 · 6 min read
What Is a Tailwater? Why Dam-Fed Rivers Are Summer's Best Trout Fishing
What a tailwater is, why rivers below dams stay cold all summer, and how to fish them: flows, flies, and the famous Western tailwaters worth the drive.
Frequently asked
Where can I fish near me?
Angler Tech maps every gauged trout river in the U.S. with live USGS streamflow, water temperature, and access points. Allow location access on the live map to see the closest fishing spots to you, or search any body of water in the United States.
What is the best time to fish today?
Open the live map to compare current streamflow and water temperature before deciding when and where to fish.
Do I need a fishing license?
Yes — every U.S. state requires a fishing license. Angler Tech links directly to each state's DWR license page from the relevant state landing page.
Is Angler Tech free?
Yes. The live river map, current conditions, access points, catch log, and fly reference are free to use.
Map
Fly Guide