Rock Creek

Boat Ramps: 0
Access Points: 0
Species: 6

Rock Creek in Cassia County, Idaho is a 43.4-mile tributary of the Snake River that flows through both Cassia and Twin Falls Counties. This designated Recommended Fishing Water and Family Fishing Water offers diverse angling opportunities in two distinct sections. The lower section provides easily accessible stream fishing at Rock Creek County Park in Twin Falls, featuring park amenities and regular stocking programs. The upper section winds through Forest Service lands above the historic townsite of Rock Creek, where beaver ponds enhance fish habitat and create excellent fishing conditions in a more remote mountain setting. The creek is best known for its consistent trout fishing opportunities and serves as an ideal destination for both novice and experienced anglers.

Idaho licenses and regulations4 to check before you go

Species & education

Learn what type of fish are at Rock Creek and what's needed to catch them.

Find which waters have the species you want to catch

Rainbow Trout

Oncorhynchus mykiss

Brown Trout

Salmo trutta

Cutthroat Trout

Oncorhynchus clarkii

Brown Bullhead

Ameiurus nebulosus

Common Carp

Cyprinus carpio

Northern Pikeminnow

Ptychocheilus oregonensis

Fish stocking schedule

Latest 5 stockings

Rainbow Trout1,275 fish · Catchable sizeJun 15, 2026
Brown Trout3,014 fish · 4.5 inMay 7, 2026
Rainbow Trout486 fish · 13.0 inApr 28, 2026
Rainbow Trout1,006 fish · 13.0 inAug 4, 2025
Rainbow Trout322 fish · 13.0 inAug 4, 2025

Source

Idaho Department of Fish and Game

Updated Nov 13, 2026. Sizes are the length the agency reports. Dates are as precise as the agency reports them.

Open stocking page

Fishing spots, boat ramps & amenities

Learn how to get on Rock Creek. Uncover great fishing access points, boat ramps, and all the facilities you need for an unforgettable day on the water. Some locations shown may border or include private property. Always check property boundaries and applicable regulations before visiting. onWater's Public & Private Land layer can help you plan your access with confidence.

Idaho Troutfitters

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Know where you can legally fish on Rock Creek

See public and private land boundaries along the water, turn on private parcels with owner details to know where permission is required, and find land-trust parcels that offer permitted fishing access.

Idaho licenses and regulations

Idaho Boating Regulations

When using any type of watercraft to access a body of water, it is important to follow all federal, state, and local rules and regulations. These rules and regulations include boat permitting and licensing, invasive species inspections and stamps, life jacket and PFD rules, motor size and horsepower restrictions, noise limitations, restrictions on personal watercraft, and many more. Visit the web link below for the most current rules and regulations for this body of water.

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Idaho Fishing License

"To fish in Idaho any person 14 years of age or older must have a valid fishing license. Anglers younger than 14 do not need a license, but there is a small difference between resident and nonresident youth. -A resident child under 14 has their own separate fishing limit. -A nonresident child under 14 must be with someone who has a valid fishing license and their fish are in included in the license holders fishing limit. However, a nonresident child may purchase their own license and have their own limit. Special fishing permits are need for some activities for both residents and nonresidents: -Fishing for salmon and steelhead -Fishing with two poles."

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Idaho Fishing Regulations

This river has a variety of species and regulations, including potential floating and/or watercraft restrictions. Because this river is specially managed for species, seasons, angling methods, and watercraft, it is strongly encouraged you check all federal, state, and local regulations before fishing. Visit any of the links below, inquire locally, or contact a local fly shop to learn current regulations and restrictions.

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Idaho Stream Access Laws

Navigable streams are recognized as public transportation corridors, thus members of the public have the right to use the corridor, provided they enter and exit the corridor at a public right of way and remain within the corridor. Many navigable streams flow through private property, thus it is important that anglers know their rights and responsibilities when fishing in navigable waters that flow through private property.

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Take Rock Creek with you

The onWater Fish app keeps this water's access points, species and conditions in your pocket, with the tools you use once you're there.

Use the map without signal
Download the map around Rock Creek to use it offline when coverage drops.
Log your catches here
Keep a private fishing journal for Rock Creek to find where and when fish are biting for you.

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