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California

Old Rio Vista waterfront

Riverbank, tidal Inferred from historyPermission required

What you could find

Reported finds from this shoreline.

Sea potterySea pottery

Photos via Wikimedia Commons: NPS (Public domain).

Why this spot

Pre-1862-flood townsite + steamboat landings

Town relocated after 1862 flood - old site logic only.

Keep exploring nearby

More spots in this area.

Check access and collecting rules for each site.