Hikers enjoying sunset sky at Monte Bello Preserve

Measure AA

Sunset hikers at Monte Bello Preserve (Karl Gohl)
Funded by Measure AA 2014 Open Space Bond

In early 2014, after a thorough community engagement and science-based resource evaluation process, Midpen developed 54 Priority Action Portfolios focused on land protection, habitat restoration and ecologically sensitive recreation. Twenty-five were prioritized as the Top Vision Plan Priority Actions. 

On June 2014, Measure AA, a 30-year, $300 million general obligation bond, was approved by over two-thirds of District voters.

Measure AA funds are being used to implement a large portion of these Top 25 Vision Plan Priority Actions. The remaining Vision Plan work, including the other 29 Vision Plan Priority Actions, will be completed as time and resources allow. The District continues to actively seek grant funding and outside partnerships to implement these additional priorities. 

Assets and Organizational Support
Organization Support
illustration of a bird in flight next to the letters MAA
Measure AA

Voter-Approved Measure AA Ballot Language

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.


Measure AA bonds will be sold in a series and as far out as the year 2044. Midpen's goal is to invest the bond proceeds to: 

  • protect natural open space lands
  • restore and enhance open space land, which includes forests, streams, watersheds and coastal ranch areas
  • open preserves or areas of preserves that are currently closed to the public
  • construct public access improvements such as new trails and parking areas

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Measure AA Accomplishments

Land acquisition is the first step to open space conservation. Measure AA identifies the goals of preserving wildlife corridors, wetlands, watersheds, creeks, sensitive plant communities and other natural habitats. In addition, Measure AA includes funding to expand ecologically-sensitive public enjoyment and education of the open space lands and natural resources. 

Measure AA-related accomplishments through June 2022 include:


Measure AA Bond Oversight Committee

The Measure AA Bond Oversight Committee consists of seven at-large members who reside within the District, and is essential to implementing Measure AA. The Committee is appointed by the Midpeninsula Regional Open Space District’s Board of Directors pursuant to Measure AA to ensure accountability, transparency, and public oversight of all funds collected and allocated under Measure AA. The Committee's roles and responsibilities are as follows: 

  • Review Plan expenditures on an annual basis to verify conformity with the Expenditure Plan. 
  • Review District's Annual Audit and Annual Accountability report and present the Committee's findings to the Board at a public meeting.
  • Review any proposed amendments to the Expenditure Plan.

Measure AA Bond Accountability Report

The Measure AA bond oversight committee convenes at least once a year and takes the time required to thoroughly review annual Measure AA expenditures and Midpen’s Annual Audit and Accountability Report. Each year, the committee’s findings are presented to the board at a public meeting and are posted on our website. The MAA Bond Accountability Report measures MAA progress against each of the elements listed in the 25 MAA Porfolios as described under the MAA Expenditure Plan.  Find out more about the committee.

The timeframe of this report spans from July 1, 2021 – June 30, 2022 and reflects Measure AA expenditures during this time period. The structure of this document is guided by the Measure AA Ballot language, specifically Priority Portfolio Actions by Region, which appears on page 7 of this report. See accountability reports from previous years