Tatter​sall Storm Drainage Improvement Project

​Latest ​News


​On August 11, construction was put on hold due to private utility conflicts. View the August letter 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 Tattersall Storm Drainage Improvement Project will reduce street and structure flooding throughout the neighborhood and address stream erosion to provide a more natural, stable stream system. Located within a drainage area of approximately 130 acres, the project will replace and/or rehabilitate aging infrastructure and provide adequate drainage system capacity. 

Estimated Cost: $7,000,000*

*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.



PlanningCOMPLETEDFebruary 2014
DesignCOMPLETEDSeptember 2019
PermittingCOMPLETEDOctober 2019
Property Easement/AcquisitionCOMPLETEDSeptember 2017
ConstructionON HOLD

​Proje​ct Team​

Curtis Mclaughlin

Construction Inspector

Adam Clapp

Construction Supervisor

Tyler Howell, PE

Project Manager​



Tattersall August 2020.pdfTattersall August 2020
Tattersall June 2017 Mailer.pdfTattersall June 2017 Mailer
Tattersall October 2016 Meeting Minutes.pdfTattersall October 2016 Meeting Minutes
Tattersall August 2016 Mailer.pdfTattersall August 2016 Mailer
Tattersall June 2016 Mailer.pdfTattersall June 2016 Mailer
Tattersall November 2015 Mailer.pdfTattersall November 2015 Mailer
Tattersall July 2015 Mailer.pdfTattersall July 2015 Mailer
Tattersall March 2015 Mailer.pdfTattersall March 2015 Mailer
Tattersall October 2014 Mailer.pdfTattersall October 2014 Mailer