Much of the Hudson's water is difficult to see through. A mere 1% of sunlight hitting the water's surface penetrates three feet down. This is largely the result of suspended soil, silt, and clay.
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The Mississippi RiverThis once pristine waterway is perhaps the most polluted in the United States. Part of the problem stems from agriculture. The Mississippi River traverses much of America's heartland, drawing no end of runoff from factory farms. Animal waste isn't the only problem.
Crabs, turtles and many types of fish can be found along the whole length of the river. Near the sea, even starfish, lobsters and sea horses can be found!
General Electric dumped an estimated 1.3 million pounds of polychlorinated biphenyls (PCBs) into the Hudson River between 1947 and 1977. The PCB discharges came from two GE capacitor manufacturing plants located in Fort Edward and Hudson Falls, New York, about 50 miles north of Albany.
The New River, which flows through both West Virginia and Virginia, is not as new as its name portrays. According to the National Parks Conservation Association, the New River is estimated to be anywhere from 260 to 375 million years old. This makes the New River the oldest river in North America.
The Colorado River is drying up due to a combination of chronic overuse of water resources and a historic drought. The dry period has lasted more than two decades, spurred by a warming climate primarily due to humans burning fossil fuels.