Explore / / California
California
Port Costa wharf frontage
Tidal mudflat Inferred from historyGray area
What you could find
Reported finds from this shoreline.
Sea potteryPhotos via Wikimedia Commons: NPS (Public domain).
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Why this spot
1879-1900s: world's busiest wheat port; wharf-side dumping
Pure historical inference. No documented digger activity found either way.
Before you go
Hazards noted for this site.
Strong strait currents
UP tracks - cross only at official points.
Keep exploring nearby
More spots in this area.