Bollinger Canyon Creek: Difference between revisions

Bollinger Canyon Creek is unique in that it retains a population of [[Coastal rainbow trout]] which have been extirpated from much of the [[San Francisco Bay]] watershed through development and the installation of migration barriers like dams<ref name=":2" />. It is speculated that this population is of hatchery origin and escaped from a stocked pond during a flood event<ref name=":3" />. Regardless of their origin, the most recent survey of trout distribution in the region showed that rainbow trout were successfully reproducing in Bollinger Creek<ref name=":3" />. The lack of development in Bollinger Canyon and the quality of the habitat found in the area has likely aided the trouts' establishment in the creek. The total population is unknown, and it is unclear how the trout fared during the severe [[Droughts in California|droughts]] between 2012 and 2020.