Fishing Season: Year Round

Owyhee River - OR

Fishing Outlook & Conditions

Water Temp:

40

Three Rivers Ranch's Tip of the Week

Flows are steady at 115 cfs, which makes for great conditions to walk and wade in! Midges are producing in the mornings, tapering off towards midday. Evenings are still producing some PMD's with Blue Wings beginning to dominate most of the dry fly activity. Terrestrials are starting as well! More and more hoppers have been seen on and near the river. Still, fishing consists of mostly subsurface nymphs throughout the majority of the day. Call our Boise Fly Shop at (208) 939-6065 to find out the latest info on the Owyhee River and to book a guided trip for 2026.

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Map of Owyhee River

Water Flow Data

Orvis-Endorsed guides nearby

Three Rivers Ranch

5-Day Outlook as of 8/13/26

Thunderstorms and showers pushing through the next couple of days. Daytime air temps will linger in the mid to low 90's, with nighttime lows dropping to high 50's to low 60's. Lots of weather moving through, fish on!

Techniques & Tips as of 8/13/26

Nymphing midges and baetis, BWO adults and emergers

Local Species Available Year Round

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    Brown trout

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    Rainbow trout

Three Rivers Ranch's Recommended Fly Patterns

"Must-have" fly fishing patterns in descending order of importance:

Name: Colors: Size(s):
RS2 PMD 16-18
Birchell’s Hatching Midge N/A 18-22
Magic Midge N/A 18-22
Bead Head Brassie™ Black 18-22
Sculpzilla Olive 6
Zebra Midge Black/Red 18-22
Bead Head Woolly Bugger Streamer black, rust, olive 6-10
Split Case PMD Nymph Brown 18-22
Woolley Bugger Olive 8

RS2

The RS2 is a must-have emerger fly pattern for any trout fisherman.

2.99

Item #067T

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Three Rivers Ranch's Recommended Gear

Description: About Owyhee River

Beginning in northern Nevada, the Owyhee River flows northward toward southeastern Oregon and southwestern Idaho before it joins, as a major tributary, the Snake River. The Owyhee and its tributaries gather watershed from the Owyhee Plateau. The river travels through steep canyon area, valley communities and the Duck Valley Indian Reservation. Once it crosses the Idaho border, it eventually meets up with the South Fork Owyhee River. As it passes through the lower southeast corner of Oregon, it combines with the West Little Owhyee River (from the south), the Middle Fork Owyhee River and the North Fork Owyhee River (both from the east). Other tributaries such as Jordan Creek, Rattlesnake Creek and Crooked Creek merge into the Owyhee as it makes its way toward the Snake River near the Idaho-Oregon border. Before the river officially meets up with the Snake, it’s stopped by the Owyhee Dam, which creates man-made Lake Owyhee. Below the dam the river then merges with the Snake River.

Nearest Airport:

BOI

Hatches:

BWO's, Midges, PMD's

Best Time to Fish:

Mid Afternoon

Best Stretch:

Snively Hot Springs up river to the Dam

Best Access:

Great Road Access