The San Rafael watershed comprises 11 square miles and is densely developed from its hills to filled wetlands. The creek originates in the hills above Tamalpais Cemetery and flows through residential and industrialized areas before forming the San Rafael Canal in the vicinity of Highway 101. The upper stream corridor consists of short stretches of open stream channel, underground culverts, and trapezoidal open channels. The creek enters San Rafael Bay at Pickleweed Park. San Rafael Creek and Canal, once important commercial waterways in Marin, are currently used as marinas for recreational watercraft. Habitat for native species is provided by a small marsh at Pickleweed Park, and a handful of intact woodland, grassland, and lagoon areas occur in the northern edge of the watershed.
Learn more about the history and habitat of the San Rafael watershed.