About the Midpeninsula Regional Open Space District

Measure AA Regional Open Space
Access, Preservation and Restoration Bond

Stay Informed | Future Projects | Next Steps | Oversight | Benefits | Ballot Language

On June 3, 2014, voters passed Measure AA, a $300 million general obligation bond to purchase open space land, construct public access improvements such as new trails and staging areas, open preserves, and restore and enhance open space land, which includes forests, streams, watersheds, and coastal ranch areas.

 A Letter of Thanks from the Board President and General Manager


Join the Measure AA Implementation Process Email List  


As promised, Measure AA funds will ONLY be used for the 25 key project portfolios listed below. During the Vision Plan process these were called projects. They have been renamed portfolios, because each one contains multiple projects that will be prioritized separately.

Click the image to view the Top 25 Future Open Space Project Portfolios Interactive Story Map Project Areas

Download the Top 25 Future Open Space Project Portfolios


Roadmap to the Future of Open Space
Wednesday, October 29 at 5:00 p.m.

330 Distel Circle, Los Altos, CA 94022*

The Board of Directors will discuss and approve the initial 5-year implementation plan for Measure AA projects that have been prioritized using the criteria adopted by the Board on September 10th. please note that the meeting location may change, check back prior to the meeting. 

Download the Meeting Agenda for more information about items to be discussed

Members of the public are invited to attend and share their views on project priorities or submit comments ahead of the meeting. 

Please RSVP if you plan on attending the meeting.

*Please note that the meeting location may change, check back prior to the meeting

During this transition year 2014-15, Midpen is focused on preparing for the first bond issue and implementing Measure AA projects that are already underway as part of the current fiscal year action plan.  As staff prepares the Measure AA implementation schedule, we will be sharing the information via our website.

Midpen is already working on a number of Measure AA projects as part of the current fiscal year work plan.  These capital projects include:  public access to Mt. Umunhum at Sierra Azul and new trail connections, such as Ancient Oaks Trail in Russian Ridge Open Space Preserve and the Bay Trail gap between East Palo Alto and Menlo Park.


Measure AA requires the formation of an independent oversight committee.  The Citizen Oversight Committee will consist of seven at-large members who reside within the District. The Citizen Oversight Committee is expected to meet at least once a year to review annual Measure AA expenditures and review the District’s Annual Audit and Accountability report.  Each year, the Committee’s findings will be presented to the Board at a public meeting. We encourage members of the public who are interested in learning more about the oversight committee to join the notification mailing list for the formation of this committee.




As approved by voters at the June 3 election, bond funds will:

  • Expand public access to protected land
  • Save local redwood forests
  • Provide clean air and water by restoring land that feeds our lakes, streams, ponds and waterways
  • Preserve agriculture along the San Mateo Coast
  • Restore native vegetation to create a healthy habitat for wildlife and preserve biodiversity.


To improve access to hiking and biking opportunities, protect and preserve redwood forests, natural open spaces, the scenic beauty of our region and coastline, critical wildlife habitat, restore creeks to protect water quality, and reduce forest fire risk; shall Midpeninsula Regional Open Space District be authorized to issue up to $300 million in bonds, at a tax rate not to exceed $3.18 per $100,000 of assessed value of property owned, with expenditures verified by an independent citizen oversight committee?



San Mateo County
Santa Clara County
Portola Valley
Mountain View
East Palo Alto
Redwood City
Los Altos
Palo Alto
Half Moon Bay
San Carlos
Los Altos Hills
Menlo Park
Los Gatos
Monte Sereno

Updated 10/22/14

  Additional Information

Join the Measure AA Implementation Process Email List

Measure AA Prioritization Criteria

Top 25 Open Space Project Portfolios
(March 20, 2014)

Measure AA Brochure

Ordinance Calling for Election

Latest News

Explore your Backyard

District Map

Explore su Patio Trasero

Mapa del Districto



여러분의 뒷마당을 탐험해 보세요

지역구 지도

Sign Up Now!