It has a drainage basin of some 12,000 square miles (31,000 square km).
It has a drainage basin of 164,500 square miles (426,000 square km).
A drainage basin provides a limited surface area within which physical processes pertinent to the general hydrology may be considered.
With its principal tributaries, the Naesŏng, Panbyŏn, Wi, Kŭmho, and Nam, the river has a drainage basin of 9,200 square miles (23,800 square km).
The total length of the river is 1,424 miles (2,292 km), and it has a drainage basin of 84,500 square miles (219,000 square km).
The canals are a drainage basin for 1.4 million people in the area around Venice, and a sewer system for the 60,000 residents of the historic center and the 20 million tourists who visit it each year.
Although the Tocantins-Araguaia system is popularly regarded as a tributary of the Amazon, it is technically a separate system, with a drainage basin of more than 300,000 square miles (800,000 square kilometres).
Runoff from the states of Wyoming, Utah, Nevada, Idaho, Oregon, and Washington combines in the Snake, which has a drainage basin of some 109,000 square miles (282,000 square km).
Lake Alakol has a drainage basin of about 26,500 square miles (68,700 square km), an area of 1,025 square miles, reaches a depth of about 148 feet (45 m), and receives the Urdzhar River (north).
The river system has a length of 1,000 miles (1,600 km), a drainage basin of 153,800 square miles (398,000 square km), and an average annual discharge of 42,700 cubic feet (1,210 cubic metres) per second.
With a length of 651 miles (1,047 kilometres) and a drainage basin of some 75,100 square miles (194,500 square kilometres), it is a waterway of great importance to the nations of eastern Europe; more than 85 percent of the river's drainage basin, however, lies in Polish territory.
