Tri-Cities 12 Tribes Casino - Proposed Casino Resort in Pasco, Washington

The Confederated Tribes of the Colville Reservation are proposing the Tri-Cities 12 Tribes Casino, a major casino-hotel resort planned for 177 acres in Pasco's King City area. The project is currently in the federal Environmental Impact Statement (EIS) review process and has not yet received construction approval. If approved, it would become one of the largest casino developments in Eastern Washington.

• Project is active and under federal review.
• Land must be placed into trust before construction.
• No Draft EIS released yet.
• No opening date announced.
• No construction start approved.
• Next milestone: Draft Environmental Impact Statement.

Latest Construction Update

As of June 2026:

The Bureau of Indian Affairs is preparing the Draft Environmental Impact Statement for the Tri-Cities 12 Tribes Casino. The Colville Tribes continue to advance the project, while Yakama and Umatilla tribes maintain formal opposition. No new filings, permits, or approvals have been issued since the 2024 scoping phase.

Construction Timeline

• 2019: Colville Tribes purchase 177 acres in Pasco.
• 2023: Fee-to-Trust application submitted.
• April 2024: Federal Notice of Intent published.
• April-June 2024: Public scoping period.
• 2025-2026: EIS preparation underway.
• Pending: Draft EIS => Final EIS => Record of Decision => Governor's concurrence => Construction.

Project Phases & Future Development

Phase 1:

• Casino.
• Hotel.
• Restaurants.
• Parking and infrastructure.

Phase 2 (conceptual):

• Expanded hotel rooms.
• Additional dining.
• Event center enhancements.

Phase 3 (long-term concepts):

• Tourism attractions.
• Additional resort amenities.

Planned Casino

• Approximately 2,000 slot machines.
• Approximately 30 table games.
• 70,500 sq. ft. gaming floor.
• Player rewards program (not yet announced).

Planned Restaurants & Bars

• Multiple dining venues.
• Casual and quick-serve options.
• Bar and lounge concepts.

Planned Hotel & Resort Amenities

• 8-story, 200-room hotel.
• Meeting and event space.
• Retail offerings.
• Resort-style amenities (details pending).

Planned Entertainment & Event Spaces

• Multi-purpose event center.
• Meeting rooms.
• Potential outdoor event capacity (conceptual).

Location

The casino will be built on off-reservation land owned by the Confederated Tribes of the Colville Reservation and located northeast of King City in Pasco, Washington.

• 177 acres in Pasco's King City area.
• Near Highway 395.
• Commercial and agricultural surroundings.
• Large-scale development footprint suitable for a full resort.

Map of Colville Tribes land in Pasco, Washington

Tribe

Tribe: Confederated Tribes of the Colville Reservation

Headquarters: 21 Colville St, Nespelem, WA, 99155 - Phone (509) 634-2200

Website:: www.colvilletribes.com

The Confederated Tribes of the Colville Reservation (CTCR) are a federally-recognized group of twelve Indigenous bands managing the Colville Indian Reservation in northeastern Washington

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