Map location of Isthmus Reef

Isthmus Reef

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Reef

About Isthmus Reef

Isthmus Reef is a popular dive site on Catalina Island that is accessed by boat only. Its sheltered setting and shallow profile make it well suited to open-water training, students, and newer divers. The site features kelp habitat with a variety of fish and invertebrate life.

Where Is Isthmus Reef?

Map location of Isthmus Reef
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Community sourced coordinates.

Isthmus Reef Planning Details

Depth range, seasonality, and planning context.

Depth Note

Described as shallow.

Typical Conditions

Sheltered location.

Safety & Access At Isthmus Reef

Hazards, restrictions, and access requirements.

Key Hazards

Restricted access

Access Restrictions

Reachable only by boat.

Local Intel For Isthmus Reef

Community notes to help plan your visit.

Scuba

Often used for open-water students and newer divers due to the sheltered, shallow environment.

Isthmus Reef Dive Conditions Planner

Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Isthmus Reef.

Current Snapshot
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Great
Sea State
Swell No data · Period unavailable
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Visibility Outlook
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Exposure Profile at Isthmus Reef

Directional shelter context for incoming swell.

Exposure Note

Hourly forecast data is not available yet.

Recent Logged Visits At Isthmus Reef

Community dive logs and visit reports for this site.

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Dive Spot Log Averages At Isthmus Reef

Average conditions based on logged dives & visits.

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Isthmus Reef Guide - Sources and Updates

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