Actual main channel depths along the river vary; with a least depth of 24' or less at a few locations at the channel edges to a maximum depth of 108' being found mid-channel at the southern approach to Hell Gate.
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The lower Hudson river is maintained at a depth of at least 32 feet for commercial traffic from the Port of Albany to New York City, but is as deep as 200 feet in places.
Key Points: At a depth of 216 feet (though some sources say it's 202 ft), the Hudson River is the deepest river in the United States. The Hudson River's headwaters are located in the Lake Tear of the Clouds in New York's Adirondack Park. It travels 315 miles from that point to Upper New York Bay.
The Congo is the deepest river in the world. Its headwaters are in the north-east of Zambia, between Lake Tanganyika and Lake Nyasa (Malawi), 1760 metres above sea level; it flows into the Atlantic Ocean.
The East River is a saltwater tidal estuary in New York City. The waterway, which is actually not a river despite its name, connects Upper New York Bay on its south end to Long Island Sound on its north end.
3) East River, between Manhattan and BrooklynOne of New York's beaches with the most shark attacks is along the East River. The two shark attacks in the East River are the extremes of shark attacks.
The tubes descend 91 to 95 feet (28 to 29 m) below the mean high water level of the East River, with a maximum gradient of 3.1 percent. During the tunnel's construction, a house at 58 Joralemon Street in Brooklyn was converted into a ventilation building and emergency exit.
The State Health Department regularly publishes advisories warning that because of PCB contamination, most adults should eat fish caught from the East River no more than once a month and should avoid eels entirely.
Measured along with the Lualaba, the main tributary, the Congo River has a total length of 4,370 km (2,720 mi). It is the only major river to cross the Equator twice.
Depending on the geographer, the Río de la Plata may be considered a river, an estuary, a gulf, or a marginal sea. If considered a river, it is the widest in the world, with a maximum width of 220 kilometres (140 mi). NASA photo of the Río de la Plata looking from northwest to southeast.