looking up the Mill Valley Sausalito Bike Path toward Mount Tamalpais. Yellow flowering fennel sits along the bike path on the bank of the Creek.

Richardson Bay

The Richardson Bay watershed links together the communities of:

  • Mill Valley
  • Tiburon
  • Sausalito
  • Marin City
  • Tamalpais Valley
  • Belvedere

Flood Zone 3 and Flood Zone 4

The watershed includes two Flood Control Zones within it's boundaries:

  • Zone 3: Richardson Bay
  • Zone 4: Bel Aire

The Zone has an advisory board appointed by the District Board that reviews projects and how funds are spent. Their meetings are open to the public.

Learn about projects and find documents in the Flood Zone 3 and Flood Zone 4 pages.

Upcoming meetings for Zones 3 and 4

Jun 1 2023

Marin City Stormwater Plan Community Meeting 1

5:30 pm Dr. Martin Luther King, Jr. Academy
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