On the first Saturday in May, volunteers from San Mateo County to San Luis Obispo County participate in the annual Snapshot Day Event. This sanctuary-wide event provides a one-day "snapshot" of the health of the rivers and streams that flow into Monterey Bay National Marine Sanctuary.

Trained volunteers take field measurements of temperature, dissolved oxygen, pH, transparency, and conductivity, while water samples are collected for laboratory analysis of nutrients and bacteria levels. The volunteers collecting this valuable information play a key role in our community as stewards of our watersheds. Resource agencies, local governments, and community groups use the data from Snapshot Day to protect and improve the health of our local streams.

Join the thousands of other volunteers that have participated over the years since its start in 2000! Please fill out this form to register. Note pre-training required!

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