Redwood Shores Lagoon

Press Enter to show all options, press Tab go to next option


The Redwood Shores area of Redwood City is located on the Redwood peninsula, north of downtown Redwood City. Levees ring this peninsula, since the ground elevations are below that of high tides. Within the interior of the Redwood Peninsula lies Redwood Shores Lagoon.

The lagoon is a focal point of the housing and retail development in Redwood Shores, and provides visual aesthetics, unique aquatic habitat, and recreation activities (boating, swimming, and windsurfing). The lagoon also serves as a storm water retention pond, storing surface runoff during periods of high tide in San Francisco Bay. The City manages the overall operation and maintenance of the lagoon, in cooperation with county, state, and federal oversight agencies.

Recreation Safety

While the Redwood Shores lagoon functions as a stormwater retention pond, it also provides a beautiful backdrop to the homes there, and offers residents numerous recreational opportunities:

  • Boating on the lagoon is available for residents only and/or by permission of the Redwood Shores Community Association; no gas powered boats are allowed.
  • Swimming is allowed, but at your own risk. Be watchful for notices of "crew" and rowing team practices and meets.
  • Fishing is allowed only with a State Fish and Wildlife permit; restrictions by homeowners associations may be in place; no fishing is allowed from City parks, including the following parks:

Redwood Shores Lagoon Management Plan - The San Francisco Regional Water Quality Control Board provides guidelines for the responsible management of lagoons. The Redwood Shores Lagoon Management Plan serves as an operations manual and provides standards for informing the Board about protection of the lagoon and contiguous waters.

Redwood Shores Lagoon Bank Policy - The Redwood Shores Lagoon Bank Policy and Construction Guidelines is a set of policies to help foster the long-term health and vitality of the lagoon, the value of the adjacent properties, and the overall attraction and beauty that makes Redwood Shores such a unique place.


Water Quality Testing Reports

The City's Community Development and Public Works Departments are responsible for maintaining the water quality of the waterway under the regulatory authority of the Regional Water Board. Water quality is maintained by applying pesticide treatments to algae blooms and widgeon grass, as well as by mechanical harvesting of widgeon grass. Aquatic herbicide treatment in 2017 started in April.

Redwood City performs water quality monitoring of the Redwood Shores Lagoon and produces monthly Water Quality Testing Reports. These reports have been included below. You can also view the 2019 Annual State Report.

 2020 2019 2018 2017 2016
March 2020
February 2020
January 2020
December 2019
November 2019
October 2019
September 2019
August 2019
July 2019
June 2019
May 2019
April 2019
March 2019
February 2019
January 2019
December 2018
November 2018
October 2018
September 2018
August 2018
July 2018
June 2018
May 2018
April 2018
March 2018
February 2018
January 2018
December 2017
November 2017
October 2017
September 2017
August 2017
July 2017
June 2017
May 2017
April 2017
March 2017
February 2017
January 2017
December, 2016
November, 2016
October, 2016
September, 2016
August, 2016
July, 2016
June, 2016
May, 2016
April, 2016
March, 2016
February, 2016
January, 2016


Here are links to two associations active in Redwood Shores and with an interest in the protection of the lagoon, as well as to a County agency involved in preventing water pollution.

Redwood Shores Lagoon FAQ

Expand/Contract Questions and Answers

  • Is it legal for people to fish or gather bait in the Lagoons?

  • We have mosquitoes around the backyard and our boat dock.

  • Who is responsible for maintaining the water quality of the Redwood Shores Lagoon?

  • Why is the water level in the lagoon low in the winter months and higher in the summer months?