You are always welcome to stop by the District Administrative Office to pick up trail brochures, volunteer information, agendas, and other information:

Midpeninsula Regional Open Space District
Administrative Office
330 Distel Circle
Los Altos, CA 94022-1404

(650) 691-1200 | (650) 691-0485 (fax) |

Office hours: 8:30 a.m. to 5:00 p.m. Monday through Friday

If you’re not able to make a personal visit to the District office, you can always call us at 650-691-1200, send a fax to 650-691-0485, or e-mail Please remember to include your complete address if you would like a map or brochure mailed to you.

Emergency Contact Information

To report an emergency on District lands, call (650) 968-4411.
This is the 24-hour dispatch number for District Rangers. Please call this number to report:

  • A medical, police, fire or other emergencies
  • In-progress suspicious activity or crime
  • A missing person
  • Any urgent situation for which you need immediate assistance

Please have the name of the preserve and your location (ex. the trail you are on, or if you’re in the parking lot) available to assist the dispatcher in sending you the appropriate resources.

To report maintenance needs, or for routine questions or information, call the District’s Administrative Office at (650) 691-1200. This number is answered during regular business hours, and voice mail is available outside of regular hours. E-mail can also be sent to