Wyoming Freestone
Gibbon River Fishing Report, Flows and Hatches
A smaller Yellowstone freestone of quiet meadows and tumbling canyon, mixed brown and rainbow water that stays less crowded than Lamar and Slough Creek. Good caddis and mayflies in the flats, stoneflies in the canyon, on a short July-to-October season. A park permit is required, and there is no state license here.
Freestone
Wyoming
6,800 ft
Gauge 06037100
Right now
Live conditions
An expert read, in your pocket
Rivus knows your river right now. Live conditions, what’s hatching, and what to tie on, the moment you open it.
When the day turns and nothing’s working, ask Eddy and change the plan.
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The hatch chart
Gibbon River hatch chart
The emergences that come off the Gibbon by month, straight from the Rivus hatch model.
| Hatch | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Salmonfly Stonefly, #2-4 | ||||||||||||
Caddisfly Caddis, #14-18 | ||||||||||||
Golden Stonefly Stonefly, #6-8 | ||||||||||||
Midge Midge, #18-22 | ||||||||||||
Blue Winged Olive Mayfly, #16-18 | ||||||||||||
Flying Ant / Carpenter Ant Ant, #16-18 | ||||||||||||
Pale Morning Dun Mayfly, #16-18 | ||||||||||||
Callibaetis Mayfly, #14-16 | ||||||||||||
Pale Morning Dun Spinner / Rusty Spinner Mayfly, #16-18 | ||||||||||||
Little Yellow Sally Stonefly, #10-12 | ||||||||||||
Crane Fly Crane Fly, #12-14 | ||||||||||||
Grasshopper / Terrestrial Hopper, #8-14 | ||||||||||||
Terrestrial Beetle Beetle, #14-18 |
How it fishes
A Wyoming freestone
A freestone river runs free off snowmelt and rain, so it swings hard with the seasons. It blows out and browns up in spring runoff, then drops and warms into summer. The hatches track the water temperature more than the calendar, so you time your trip to the flow and the thermometer.
Flow and gauge
Reading the flows
The Gibbon is metered at USGS gauge 06037100. Watch the trend as much as the number: a river that is dropping and clearing fishes very differently from one that is coming up.
Access and regulations
Before you fish
Access and the right to fish are the angler’s responsibility, every time. Public access, private water, and seasonal closures vary along the river, so confirm where you can legally stand and wade before you go. We do not point you to a specific spot.
Read the current rules, license requirements, and any special-regulation water before you go. Regulations change season to season, so check them fresh.
Flow and water temperature from USGS, weather from NWS and NOAA, refreshed hourly. Real-time USGS readings are provisional and subject to revision. The hatch chart and river read are Rivus model output.