Deep Hole / County Line Offshore Reefs
Offshore · Ventura County · California
Visibility Breakdown
Visibility by position
Solid = diver report · outlined = today's forecast
Break Zone: The range of water where the waves break and sediment is stirred up.
Post Break: The range past where any waves are forming, where the water starts to have a significant increase in visibility. There might be some sediment here, but swell energy is diffused and the water is calmer.
Open Water: This zone is far out enough from the shore that the water is at its clearest. It’s deep enough that sediment is not disturbed by the wave energy at the surface. Haze can sit near the surface, so the water is usually clearer the deeper you go.
Through the day
Today's visibility readings at this spot, shown at the hour each one was taken.
Every bar is a reading for the Post Break zone.
This chart shows measured diver reports only.
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Coastal Bulletin
About Deep Hole / County Line Offshore Reefs
Why it reads 28 ft
Today's forecast runs
The clarity holds through the day, with a light afternoon onshore the only disturbance to the entry shallows.
High confidence
7-Day Forecast
Today is the live headline above. Tomorrow onward is the algorithm's forecast from predicted swell, wind, and rain, updated each morning and at 6 PM Pacific.
Map and parking
Ventura County, CA
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See the offshore water on Pelagiscape →Clarity, temperature breaks and kelp off this beach.
About Deep Hole / County Line Offshore Reefs
Deep Hole is the local name for the boat-access offshore reef complex off County Line Beach at the Ventura and Los Angeles County line. The area is also called Neptune's or "the Depot," reportedly because the artificial reef portion incorporates concrete rubble from a railroad depot. Approximately 20 miles south of Ventura Harbor and approximately 15 miles south of Channel Islands Harbor, the complex runs from roughly a half mile to a mile offshore, with some sites extending further out. Boulders, small rock piles, rock walls, rocky reefs, and pinnacles fill the area. Named sites include The Ring at 40 to 60 feet, with a rocky reef and a kelp bed that rival the Channel Islands on a good day, and Towers immediately adjacent. Sea Fans and Sweet Spot sit deeper at 70 to 80 feet. Depths across the main dive area run from 40 to 100 feet, with additional unexplored sites extending toward 150 feet. Visibility ranges from 10 to 50 feet depending on season and conditions. Channel Islands Dive Adventures and other Ventura and Oxnard charter operators run regular trips to the area, including dedicated lobster trips in the fall.
Biomes here
Species found here
Researched habitat and range candidates. A listed species may be seasonal or depth-limited; this is not a confirmed sighting at this location.
Spot strategies
Nearby beaches
Surf Zone
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