page_title: Arroyo Conejo
section_title: Course
hierarchical_section_title: Arroyo Conejo / Course
caption_attribution_description: English: Hill Canyon Wastewater Plant Wetlands.
context_page_description: Arroyo Conejo is the longest creek in the Conejo Valley, sprawling over the cities of Thousand Oaks and Camarillo, and the communities of Newbury Park, Casa Conejo and Santa Rosa Valley. Arroyo Conejo is the primary drainage for the City of Thousand Oaks. Its watershed covers 57 square miles of which 43 square miles are in the Conejo Valley and 14 square miles in the Santa Rosa Valley.
  It is an ancient creek, which, historically, was a seasonal-running creek. The arroyo is today perennial due to urban runoff from irrigation. Its north fork carved Wildwood Canyon out of bedrock over several millennia. Paradise Falls in Wildwood Regional Park has been described as perhaps the "most visual representation" of the arroyo today. The south fork originates in the Conejo Hills above Newbury Park. It also follows Thousand Oaks Boulevard, where it runs directly along and below the boulevard. In certain areas, the creek runs through concrete culverts and runs underneath the street. Past Newbury Park's Hill Canyon, the creek meets with Arroyo Santa Rosa in Santa Rosa Valley as it runs through the Pleasant Valley basin on its way to its estuary at Mugu Lagoon.
context_section_description: It runs from the Conejo Hills of Newbury Park, crosses horizontally Casa Conejo, before entering Thousand Oaks and Wildwood Regional Park. It originates in the Conejo Hills and streams into Hill Canyon and further into the Santa Rosa Valley, where it merges with Arroyo Santa Rosa and becomes Conejo Creek. Conejo Creek drains through the Pleasant Valley Basin, joins Calleguas Creek and enters into the Pacific Ocean by its estuary at Mugu Lagoon at the north end of the Santa Monica Mountains. Its northern border is made up by the Santa Susana Mountains, South Mountain and the Oak Ridge Mountains. Its southern boundary is compromised by the Santa Monica Mountains to the southwest and the Simi Hills to the southeast.
caption: Wetlands in Hill Canyon.
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