Water Quality

The 276 miles of shoreline and the proximity to runoff from the land makes the sanctuary vulnerable to pollution from approximately 7,000 square miles of watershed area [link to map on 1.5] that drains to it, including contaminants such as nutrients, pathogens, pesticides, metals, persistent pollutants, and plastics.

group of people gathered at water’s edge

Regional Coordination

Monterey Bay National Marine Sanctuary and partners lead regionally integrated and cohesive water quality monitoring efforts to gather data and information from many sources to meet regulatory requirements.

treatment wetland in watershed dominated by agriculture

Agriculture Water Quality Programs

Regional partnerships that bring together farmers, ranchers, technical service providers, researchers, and resource conservation agencies to protect water quality in the sanctuary.

Monterey County volunteers lined up holding a sign with text “Help your watershed! Join us for Snapshot Day”

Water Quality Monitoring

The Citizen Watershed Monitoring Network assesses water quality threats and trains volunteers to collect robust and meaningful water quality data.

large cruise ship with sea birds in the foreground

Cruise Ships

Sanctuary staff work with partners to enforce federal and state regulatory requirements for cruise ships within Monterey Bay National Marine Sanctuary.

shoreline with ocean users

Water Use

Learn how Monterey Bay National Marine Sanctuary, with other state and local agencies, addresses issues associated with water use projects.