Welcome to the Colorado-Kansas Arkansas River Compact Administration’s website!  We welcome any suggestions, please comment using the Contact page.

Past ARCA Annual Meeting Presentations

2025 Annual Meeting

Committees of ARCA
Monday, December 8th, 2025 (Lamar, CO)*

Annual Meeting
Tuesday, December 9th, 2025 (Lamar, CO)*

*Meetings start times and location will be determined closer to meeting date.  

Model Domain Area within Arkansas River Basin

Photo of John Martin Reservoir
courtesy of Army Corps of Engineers, Albuquerque District