Colusa Casino Resort invites you to play responsibly. Colusa Casino Resort is fully committed to the highest level of ethical and responsible policies and procedures in our gaming practices. If you think you have a gambling problem, call 800-GAMBLER . You must be 21 or older to gamble. Copyright @ 2016 Colusa Casino Resort. 3770 HWY 45, Colusa, CA 95932 | Phone: (530) 458-8844.