​Chan​dworth Storm Drainage Improvement Project

​Latest N​ews


​As part of the bid phase, the final plans will be circulated to qualified contractors in July for a competitive bidding process. View the July mailer for more information.


The Sunnyvale/Chandworth Storm Drainage Improvement Project with a drainage area of 640 acres, was broken down into three smaller projects: Lilly Mill, Chandworth and Tattersall. 

The Chandworth Storm Drainage Improvement Project will replace failing infrastructure plus reduce street and structure flooding throughout the neighborhood. The project is located within a drainage area of approximately 200 acres. 

Estimated Cost: $11,100,000*

*includes all costs associated with this project such as planning and design, utility relocation, consultant fees, permits, construction, and landscaping.

The project team will manage the project through several phases. Specific work is conducted during each phase and public involvement is emphasized throughout the process. Learn more about project phases.



PlanningCOMPLETEDNovember 2013
DesignCOMPLETEDJune 2020
PermittingCOMPLETEDSeptember 2019
Property Easement/AcquisitionCOMPLETEDApril 2019
ConstructionTBDAnticipated December 2022

​Proje​ct Team

William Harris, EI 
Project Manager​

Amy Bice, EI  
Watershed Area Manager

Matthew Gustis, PE
Engineering Program Manager



Chandworth July 2020 Mailer.pdfChandworth July 2020 Mailer
Chandworth February 2019 Mailer.pdfChandworth February 2019 Mailer
Chandworth May 24 2018 Public Meeting Presentation.pdfChandworth May 24 2018 Public Meeting Presentation
Chandworth June 2018 Mailer.pdfChandworth June 2018 Mailer
Chandworth May 2018 Mailer.pdfChandworth May 2018 Mailer
Chandworth January 2018 Mailer.pdfChandworth January 2018 Mailer
Chandworth June 2017 Mailer.pdfChandworth June 2017 Mailer
Chandworth January 2017 Mailer.pdfChandworth January 2017 Mailer
Chandworth June 2016 Mailer.pdfChandworth June 2016 Mailer
Chandworth October 2015 Mailer.pdfChandworth October 2015 Mailer
Chandworth June 2015 Mailer.pdfChandworth June 2015 Mailer
Chandworth February 2015 Mailer.pdfChandworth February 2015 Mailer
Chandworth October 2014 Mailer.pdfChandworth October 2014 Mailer
Chandworth June 2014 Mailer.pdfChandworth June 2014 Mailer
Chandworth February 2014 Mailer.pdfChandworth February 2014 Mailer
Chandworth October 2013 Mailer.pdfChandworth October 2013 Mailer