The following letter dated January 21, 1918 from the SFPUC Archives reports on Peninsula Stream Flows.
Frenchmans Creek is a 4.4-mile-long stream in San Mateo County. Frenchmans Creek runs through privately owned land on the outskirts of Half Moon Bay. Though surrounded in its lower reaches by agricultural land, it supports wildlife habitat and, until recently, steelhead salmon spawning grounds.
Purisima Creek and several of its tributaries flow through the Purisima Creek Redwoods Open Space. The Preserve is located on the western slopes of historic Kings Mountain in Woodside, California. This 4,471-acre preserve was established with a $2 million gift from the Save the Redwoods League.
Lobitos Creek is a small river in San Mateo County. Rogers Gulch and Schoolhouse Creek are small stream tributaries of Lobitos Creek.
Tunitas Creek is a 6.6-mile-long stream in San Mateo County. Tunitas is Spanish for “little prickly pears”. An all-weather paved county road, Tunitas Creek Road, follows the creek from its source at 1,860 feet on Kings Mountain in the Santa Cruz Mountains to the Pacific Ocean at Tunitas Beach.
Pilarcitos Creek is a 13.5-mile-long coastal stream in San Mateo County, that rises on the western slopes of the Santa Cruz Mountains and descends through Pilarcitos Canyon to discharge into the Pacific Ocean Half Moon Bay State Beach.
San Gregorio Creek is a river in San Mateo County. Its tributaries originate on the western ridges of the Santa Cruz Mountains whence it courses southwest through steep forested canyons.
Pescadero Creek is a major stream in Santa Cruz and San Mateo Counties. At 26.6 miles (42.8 km), it is the longest stream in San Mateo County and flows all year from springs in the Santa Cruz Mountains. Pescadero is Spanish for “fishing place”. In spring 2015, three Coho Salmon were discovered spawning in Pescadero Creek.
Butano Creek is a principal river in San Mateo County and carries a large amount of the runoff of the Santa Cruz Mountains into the Pacific Ocean after joining the Pescadero Creek delta at Pescadero Marsh. The creek is 15.0 miles long.