Environmental Stewardship

California clapper rail. (Photo: Flickr/Len Blumin)

California Ridgway Rail. (formerly Clapper Rail) (Photo: Flickr/Len Blumin)

The City is committed to preserving native flora and fauna. The removal of several bridge piles in the design of the replacement bridge will increase the conveyance capacity of Corte Madera Creek, improving conditions for fish species such as the Central California Coast steelhead and green sturgeon and reducing susceptibility to flooding.

Construction schedules are based around the nesting season of the endangered California clapper rail and fish migrations. In addition to monitoring underwater sound levels, studies have been completed to review the wildlife habitat in the area and investigate how to minimize impact. Project biologists will preserve and monitor the following fourteen target species throughout construction:

  • California Clapper Rail and Black Rail
  • Central California Coast Steelhead and Coho Salmon
  • North American Green Sturgeon
  • Western Pond Turtle
  • Northern Harrier
  • White-tailed Kite
  • Short-eared Owl
  • San Francisco Common Yellowthroat
  • Samuels (San Pablo) Song Sparrow
  • Western Red Bat and Pallid Bat
  • Salt Marsh Harvest Mouse

These studies have resulted in restrictions on when, where, and how portions of the work may be completed.