Conditions
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
Castle Canyon offers clear freshwater diving in Amistad Reservoir. The site features dramatic limestone cliffs, swim-throughs, and overhangs teeming with bass and catfish. Visibility often exceeds 30 feet, with depths ranging from 20 to 60 feet. The submerged canyon walls create an eerie, otherworldly landscape perfect for intermediate divers. Watch for freshwater sponges clinging to the rock formations. Water temperatures stay comfortable year-round, making this a reliable dive spot. The unique topography resembles an underwater castle, complete with hidden crevices to explore.
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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