Didymo Distribution in California - American River Infestation Map #1631433 (License: Personal Use)

The image is a simplified outline map of California indicating the known distribution of Didymo (Didymosphenia geminata), an invasive alga. A red shaded area marks its presence in the American River watershed near Sacramento, with a labeled pointer confirming the location. This visual serves as a geographic reference for environmental monitoring and public awareness efforts.

This image is typically used on environmental agency websites, invasive species databases, or educational resources to inform the public and stakeholders about the spread of Didymo in California waters. It matches user intent seeking location-specific data on aquatic invasives or preparing for recreational activities like fishing or kayaking.