News and Announcements



COSCA open space areas will be closed due to pending weather conditions as of sundown tonight. With potentially heavy rainfall expected over the next few days there is a potential for dangerous conditions, and using wet trails = costly trail damage. While extreme stream flows are not anticipated, waterways can be dangerous in heavy rains and conditions can change rapidly.  Please avoid waterways and trails this week  and hit the hot cocoa cupboard instead!  Follow our Facebook page for the most up-to-date trail news.  Thanks!


Questions About Fire Safety?

COSCA and the City of Thousand Oaks have collaborated on a new Fire Safety page.  Please visit to learn more.


Check our our new Trail Courtesy and MTB Etiquette pages!

If you're a new visitor to our trails or someone who's been a regular for years, our new pages about Trail Courtesy and Mountain Bike Etiquette have lots of great info!  These pages are  also accessible under the Trails tab at the top of the page.



Construction-Related Trail Closure


The City of Thousand Oaks is making improvements at its La Granada Reservoir off Mountain Crest Circle adjacent to the Hillcrest Open Space area.  During construction, portions of the Ray’s Way, La Granada, and Dapple Gray Trails will be intermittently closed.


The intermittent closures are anticipated to start July 18 and may occur for approximately one (1) year.   Signage will be placed on the affected trail sections to advise users of these closures.  Notice of closures will be posted onsite and on our website 48-hours in advance.


Current Status:  As of Wednesday, July 22, trails will be closed until further notice.


More information about the City’s project can be accessed at:



COSCA Board of Directors Meeting

The  next regular COSCA Board of Directors meeting is scheduled for February 10, 2021 at 6:00 p.m.  Please note that this meeting may be conducted virtually and public participation will therefore be facilitated via Zoom or telephone.  The agenda will be accessible here.



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COSCA is a joint powers agency between the City of Thousand Oaks and Conejo Recreation and Park District

2100 Thousand Oaks Blvd., Thousand Oaks, CA 91362   |   805.449.2345

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