Accelerating Ecosystem-Scale Habitat Stewardship in Richardson Bay

Grantee: 
Richardson Bay Regional Agency
Implementation
Low Tide Eel Grass Harvesting

About this project

Active Since
September, 2026
Phases:
Implementation
Grant Amount
$1,900,000.00
Partners
RBRA is a joint powers agency made up of the County of Marin, the Cities of Belvedere and Mill Valley, and the Town of Tiburon
Location
Marin County
Richardson Bay, Marin County; Measure AA Region: North Bay
North Bay
Measure AA Programs
Vital Fish, Bird and Wildlife Habitat Program

This grant funds the Richardson Bay Regional Agency (RBRA) to undertake the Accelerating Ecosystem-Scale Habitat Stewardship in Richardson Bay Project, consisting of restoring 6 acres of eelgrass through traditional eelgrass shoot transplantation and autonomous underwater vehicle (AUV) eelgrass seeding, post-implementation ecological monitoring, and workforce development in Richardson Bay in Marin County. 

Richardson Bay historically sustained expansive, healthy eelgrass meadows that provided essential nursery habitat for Pacific herring, salmonids, Dungeness crab, and other estuarine species. Over time, however, these meadows were fragmented and damaged by human caused disturbances, especially anchor scouring from vessels and the accumulation of derelict gear and marine debris, which left eelgrass vulnerable to environmental stressors such as shifting sediments, changes in water depth, and inconsistent sunlight reaching the bay floor.

The project consists of implementing a coordinated, multipartner eelgrass restoration approach that integrates innovation with established restoration strategies over 6 acres in Richardson Bay.