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Published on: 2/13/2015 3:55 PM
The following areas are closed. For temporary trail closure information due to wet weather, please call (408) 355-2200, press 7.  View here for more information about trail closures and why they are necessary in wet weather.
If you'd like to report a problem, please call (408) 355-2215 or email

Anderson Lake County Park

  • Anderson Dam
    Monday-Friday periodically due to health risks while drilling in naturally occurring asbestos. This closure will be Mon-Fri. from March 2, 2015 to mid-April.  During the closure there will be a flag person at the entrance of the dam and at the top to allow people to access the dam and the Rosendin property.
  • Anderson Park - Serpentine Trail is closed
    The Serpentine Trail is closed due to construction on the trail being performed by the Santa Clara Valley Water District.
  • Anderson Reservoir
    Anderson Reservoir will be closing due to low water levels on Oct. 15, 2014.


  • Mtn Lion Resource Mgmt Closure
    All trails south of and including Canada del Oro Trail and all trails west of and including the Cottle Trail  in Calero Park are closed to all users including foot traffic due to ongoing Mtn. Lion resource management activities. 
    Canada del Oro Preserve on the southwestern border of Calero Park is also closed to all users for the same.

Hellyer County Park

  • Hellyer Dog Park
    The Hellyer dog park will be closed for maintenance from 11/4/14 through 12/30/14. The Hellyer dog run will remain open during this time.

Lexington Reservoir

  • Lexington Reservoir
    Lexington Reservoir is closed due to low water level.

Motorcycle Park

  • Motorcycle Park
    Motorcycle Park will be closed on May 11, 2015, due to the AmGen bicycle event preparations.

Mt. Madonna

  • Blackhawk Trail

    The Blackhawk Trail from Contour to Ridge Trail is closed permanently to all users due to erosion. Call (408) 842-2341 for more information.


  • Summit Rock

    Summit Rock will be open to all September 1, 2014 through February 1, 2015 on Fridays, Saturdays, Sundays and holidays. No permits required.

County Reservoirs

Beginning October 15 through April 14 (8am to 1/2 hour before sunset):

  • Anderson, Coyote Lake, Lexington and Stevens Creek will be closed to all boating.
  • Calero Reservoir will be open to all boating 7 days a week if water levels permit.
  • All other reservoirs and bodies of water are closed indefinitely to boating (including model boats) - those are Almaden, Chesbro, Sandy Wool, Cottonwood, Grant, Guadalupe, Uvas, and Vasona.
Check our website or call (408) 355-2200 before you travel to make sure your reservoir of choice is open.

For the safety and protection of all park visitors, please adhere to the following trail etiquette guidelines:

Stay on Designated Trails:
Remain on posted trails only. Trails may be closed due to poor conditions or sensitive environmental concerns.

Be Considerate:
Keep speeds at a safe pace. Yield to faster trail users. Use particular care when passing children and senior citizens. Respect everyone's right to use the trail.

Be Aware of Conditions:
Riding (even on open trails) when conditions are poor, such as shortly after a rain, may cause trail damage.

Plan Ahead:
Know your equipment, your ability and where you are going. Carry necessary supplies for changes in weather or other conditions.
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