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Corinthian Island facts for kids

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Corinthian Island
Aerial image of an island.
An aerial photograph of Corinthian Island from the southwest in May 2010. Belvedere Island can be seen in the foreground, and the Tiburon Peninsula in the background.
Corinthian Island is located in San Francisco Bay Area
Corinthian Island
Corinthian Island
Location in San Francisco Bay Area
Corinthian Island is located in California
Corinthian Island
Corinthian Island
Location in California
Corinthian Island is located in the United States
Corinthian Island
Corinthian Island
Location in the United States
Geography
Location Northern California
Coordinates 37°52′22″N 122°27′32″W / 37.87278°N 122.45889°W / 37.87278; -122.45889 (Corinthian Island)
Adjacent bodies of water Sacramento–San Joaquin River Delta
Highest elevation 72 ft (21.9 m)
Administration
United States
State  California
County Marin
Aerial view of Richardson Bay, September 2019 (cropped to Corinthian Island)
Another aerial photograph of Corinthian Island from the west, taken in September 2019.

Corinthian Island is a unique piece of land located in the San Francisco Bay in California. It's found in Marin County, right next to the Tiburon Peninsula. What makes it special is that it used to be a separate island, but it was connected to the mainland in the 1980s.

The United States Geological Survey measured its highest point as 72 feet (about 22 meters) above sea level in 1981. Its exact location is 37°52′22″N 122°27′32″W / 37.87278°N 122.45889°W / 37.87278; -122.45889 (Corinthian Island).

What is Corinthian Island?

Corinthian Island is a small landmass in the San Francisco Bay. It is no longer a true island because it is now joined to the nearby Tiburon Peninsula. This connection happened in the 1980s.

Where is Corinthian Island Located?

This former island is in Marin County, which is part of Northern California. It sits within the beautiful San Francisco Bay. The Tiburon Peninsula is its closest neighbor.

How High is Corinthian Island?

The highest point on Corinthian Island is 72 feet above sea level. This measurement was taken by the United States Geological Survey. It helps us understand the island's elevation.

From Island to Peninsula

Corinthian Island was once completely surrounded by water. This made it a true island. However, over time, changes were made to connect it to the mainland.

How Did it Connect to the Mainland?

In the 1980s, the area between the island and the Tiburon Peninsula was filled in. This created a land bridge. Because of this, Corinthian Island is now part of the peninsula. It is no longer a standalone island.

Why Was it Connected?

Connecting islands to the mainland can happen for different reasons. Sometimes it's for easier access. Other times, it's part of land development projects. This change made it simpler to get to Corinthian Island.

Exploring Corinthian Island

Today, Corinthian Island is a part of the Tiburon community. It offers great views of the San Francisco Bay. Many people enjoy the area for its scenery and history.

What Can You See There?

From Corinthian Island, you can see other parts of the San Francisco Bay. You might spot Belvedere Island nearby. The wider Tiburon Peninsula is also visible. It's a great spot for enjoying the bay's beauty.

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