Waterfowl season will officially be open across all of California soon. California’s Balance of State, Southern San Joaquin Valley and Southern California Waterfowl Zones open Saturday, Oct. 22, 2022, and the Colorado River Zone opens Sunday Oct. 23, 2022. These zones will remain open through Jan. 31, 2023. The Northeastern Zone opened Oct.1, 2022, and will close Jan. 11, 2023.