Lower Las Gallinas Creek Dredge CSA 6 Santa Venetia - Marin County

CSA 6 was formed to dredge the South Fork of Lower Gallinas Creek for recreational and aesthetic benefits to the nearby community. Costs to continue this work have risen faster than the funds to pay for it plus the regulatory environment has become much more restrictive to dredging so the creek has not been dredged since 1992/1994. To address these issues, staff have developed a new type of dredging approach that dredges the creek with dimensions closer to what would be naturally occurring based on the available tidal prism (the daily tidal volume that maintain tidal channel geometry); aka the “geomorphic dredge”. The anticipated advantage of a geomorphic dredge is that it is more cost-effective, potentially more sustainable, and less environmentally impactful. Steps towards design of the geomorphic dredge were recommended by the CSA 6 Advisory Board last year, and dredging could occur in 2024/2025, if disposal at the McInnis Marsh site is approved by the permitting agencies. Staff are currently working with local agencies including Marin County Parks to permit this option. Project is included in the Marin County's FY 2022-2027 CIP. As of November 7, 2022, information regarding a design team or a general contractor is not available. Funding is anticipated in 2022/2023.* *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.

Division 03 -	Concrete, Precast Concrete.
Division 33 -	Utilities, Storm Drainage Utilities, Storm Utility Drainage Piping, Storm Utility Water Drains, Storm Drainage Structures.