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The Humboldt River is a large body of water in Liberty City featured in Grand Theft Auto IV which separates Algonquin Island from Broker, Dukes and Bohan, with Charge Island and Colony Island located on the river. It is named after the fictional explorer Horatio Humboldt.


The river is implied by the documentary "A History of Liberty City" to be heavily polluted before even the establishment of the city itself, due to the natives using it to dump waste.

There are two Stunt Jumps on the river, one near Hatton Gardens and one near Colony Island. Both stunt jumps require the use of a boat.

Mission Appearances

Grand Theft Auto IV


The Humboldt River is based on two different waterways in New York City and Northern New Jersey. Its real-life counterpart is the East River, which separates Manhattan and Long Island. In reality, despite its name, The East River is not actually a river, but rather a Salt Water Tidal Estuary. The name "Humboldt" and the river's status as the main river in Liberty City is based on the Hudson River, which actually separates New York and New Jersey. There is a river in the United States named the Humboldt River, though this is located in Nevada and bears no other resemblance to this river.