How deep is Alcatraz water?

The bay is actually only as deep as a swimming pool. Heck, between Hayward and San Mateo to San Jose it averages 12 to 36 inches. So much for that bridge! With that said though, the water surrounding Alcatraz is on the deeper end of the scale, but still, it's just an average depth of 43 feet.



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Swimming from Alcatraz is one of the most famous, desirable, and enjoyable open water swims (wild swim) in the entire world. Despite lore that swimming from Alcatraz is dangerous, for experienced swimmers with proper support, swimming from Alcatraz can be safe and fun.

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As Alcatraz had no water supply of its own, it had to import it from the mainland, brought by tug and barge. During the island's military years, it was stored in ground tanks and cisterns situated on the roof of the citadel. The water tower was built in 1940–41 by the Federal Bureau of Prisons.

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Before they open the prison in the morning, they have him come out and deliver an opening act for the crowd. He's like a standup comedian. What does Alcatraz smell like? A cross between sea air and decay, old paint.

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A few years ago a 13 foot sturgeon was caught in the Bay. And as everyone reminds me, three Alcatraz inmates escaped their cells on a cold, dark night in 1962, entered the frigid waters, and were never seen or heard from again. Open-water swimming has a long and colorful history.

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Each year, this small population of around 300 adults returns in the fall to our National Marine Sanctuary during Sharktober. Several events of tagged white sharks have been documented passing through the Golden Gate swimming along the waterfront and circling past Alcatraz before leaving again.

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Garbage and sewage are shuttled back to the mainland to keep Alcatraz from getting too stimulating to the olfactories. The park, along with Alcatraz Cruises, is committed to keeping waste from Alcatraz out of landfills. After returning to the mainland, workers separate recyclable and compostable materials.

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Prison Guard Harold P. Stites was shot and killed (by friendly fire) during the rescue attempt while Prison Guard William A. Miller died of his injuries the following day in the cell. In addition to the deaths of those two, 14 other prison guards were wounded in the battle.

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Alcatraz officials have suggested they drowned or died of hypothermia. Read more Alcatraz stories here. But now, more than 50 years later, the Anglin family has provided evidence that the men might have survived.

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Every year, there are a total of 18 overnight stays available on Alcatraz, and a staggering number of 200 to 400 groups compete for the opportunity to secure one of these spots.

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The three men in question are convicted bank robber Frank Morris, John Anglin and his brother Clarence Anglin. On June 11, 1962, the trio successfully escaped the maximum security prison after posing fake heads in their beds that were pushed through holes of a concrete wall.

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Temperatures on Alcatraz Island seldom rise above 75°F (24°C) or fall below 38°F (3°C). It almost never snows on the Island, but winters can be wet and cold. Afternoon winds are common during every season.

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The Bay water temperatures ranged from fifty to fifty-four degrees. It was determined that exposure to the elements would have affected body functions after approximately twenty minutes.

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There a chartered bus transported them to an undisclosed airport where a U.S. Immigration Service airplane took them to their new institutions in Leavenworth, Kan.; McNeill Island, Wash.; Lewisburg, Pa.; or Atlanta, Ga.

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Frank Weatherman seen above and left, he was the last inmate to be transferred to Alcatraz, and the last inmate to walk down the gangway and leave the island. An officer holding a calendar showing the last day of operations, March 21, 1963.

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