Tunitas Creek is a 6.6-mile-long stream in San Mateo County, California. Tunitas is Spanish for "little prickly pears". The creek rises at an altitude of 1,860 feet on Kings Mountain in the Santa Cruz Mountains and flows to the Pacific Ocean at Tunitas Creek Beach. An all-weather paved county road, Tunitas Creek Road, follows its course. Steelhead trout have b…Tunitas Creek is a 6.6-mile-long stream in San Mateo County, California. Tunitas is Spanish for "little prickly pears". The creek rises at an altitude of 1,860 feet on Kings Mountain in the Santa Cruz Mountains and flows to the Pacific Ocean at Tunitas Creek Beach. An all-weather paved county road, Tunitas Creek Road, follows its course. Steelhead trout have been found in the creek.