Where a lake has formed within the basin, the water body is usually saline as a result of the internal drainage — the water has no outlet to the sea.

The drainage basin amounts to more than and drains the waters of the following sub-basins:

The Black Forest is part of the continental divide between the Atlantic Ocean drainage basin ( drained by the Rhine ) and the Black Sea drainage basin ( drained by the Danube ).

* most of the north and central region of the country is part of the Okavango inland drainage basin ;

* the easternmost part of the country falls into the Limpopo drainage basin ;

In such pre-industrialized, or poorly developed infrastructure regions, many barges are purpose-designed to be powered on waterways by long slender poles thereby becoming known on American waterways as poleboats as the extensive west of North America was settled using the vast tributary river systems of the Mississippi drainage basin.

Of the 227 major dams in the Columbia River drainage basin, the four Washington dams on the lower Snake River are often identified for removal, notably in an ongoing lawsuit concerning a Bush administration plan for salmon recovery.

Water quality is also an important factor in the survival of other wildlife and plants that grow in the Columbia River drainage basin.

The states, Indian tribes, and federal government are all engaged in efforts to restore and improve the water, land, and air quality of the Columbia River drainage basin and have committed to work together to enhance and accomplish critical ecosystem restoration efforts.

Most of the Columbia's drainage basin ( which, at, is about the size of France ) lies roughly between the Rocky Mountains on the east and the Cascade Mountains on the west.

In the United States and Canada the term watershed is often used to mean drainage basin.

The term Columbia Basin is used to refer not only to the entire drainage basin but also to subsets of the river's full watershed, such as the relatively flat and unforested area in eastern Washington bounded by the Cascades, the Rocky Mountains, and the Blue Mountains.

In 2000, about six million people lived within the Columbia's drainage basin.

Several major North American drainage basins and many minor ones share a common border with the Columbia River's drainage basin.

Compared to the Columbia above the confluence, the Snake is longer ( 113 %), and its drainage basin is larger ( 104 %).

The drainage basin of the Daugava

In terms of length, drainage basin and discharge, the Khabur is the largest of these three.

Rupert's Land, the drainage basin of Hudson Bay, the Company's grant.

This region constitutes 1. 5 million square miles ( 3. 9 million km² ) in the drainage basin of Hudson Bay, comprising over 1 / 3 the area of modern day Canada and stretching into the north central United States.

Domains of hydrology include hydrometeorology, surface hydrology, hydrogeology, drainage basin management and water quality, where water plays the central role.

The United States claimed Louisiana included the entire western portion of the Mississippi River drainage basin to the crest of the Rocky Mountains and land extending southeast to the Rio Grande and West Florida.

Agricultural and urban runoff from the watershed or drainage basin is the primary source of excess phosphorus, which exacerbates algae blooms in Lake Champlain.

Encompassing much of the Eurasian Steppe, the territory of Siberia extends eastward from the Ural Mountains to the watershed between the Pacific and Arctic drainage basins, and southward from the Arctic Ocean to the hills of north-central Kazakhstan, then to the national borders of Mongolia and China.

It drains a rural dissected plateau of in the northern Allegheny Plateau, providing the northeastern most drainage in the watershed of the Mississippi River.

The Arctic watershed ( or drainage basin ) drains northern parts of Manitoba, Alberta and British Columbia, most of the Northwest Territories and Nunavut as well as parts of Yukon into the Arctic Ocean, including the Beaufort Sea and Baffin Bay.

Snake River drainage basin | watershed.

Three Forks is a city in Gallatin County, Montana, United States and is located within the watershed valley system of both the Missouri and Mississippi rivers drainage basins — and is historically considered the birthplace or start of the Missouri River.

The drainage area of these creeks is small but makes up most of the townships watershed.

Lake Tahoe is a tributary watershed drainage element within the Truckee River Basin, and its sole outlet is the Truckee River, which continues on to discharge to Pyramid Lake.

In North America another, mainly non-mountainous divide, the Laurentian Divide ( or Northern Divide ), further separates the Hudson Bay-Arctic Ocean drainage region from the Atlantic watershed region.

In North America, the term watershed is commonly used to mean a drainage basin ( though in other English-speaking countries, it is used only in its original sense, to mean a drainage divide ).

At, the Mackenzie River's watershed or drainage basin is the largest in Canada, encompassing nearly 20 % of the country.

The border between Italy and Switzerland is the main Alpine watershed, separating the drainage basin on the Rhone on the north ( Mediterranean Sea ) and the Po River on the south ( Adriatic Sea ).

A mucocutaneous zone is often the site of an arterial anastomosis, a watershed area of venous and lymphatic drainage, and sensory ( but not motor ) nerve overlap.

Map of the Maumee River drainage basin | watershed.

Much as how a watershed in British and Australian usage refers to " the ridge or crest line dividing two drainage areas ", a television watershed also serves as a dividing line – it divides the time between where content for families and / or children has to be aired, and where content aimed towards an adult audience can be aired ( there is no obligation to ).

The watershed includes the drainage areas of Mount McKinley.

By far the largest watershed in the state, the Wabash River drainage area contains the several large cities, including Indianapolis and the extreme western part of Fort Wayne.

Apart from the Murray River, it is economically the most important river in Australia, and has the fourth-largest watershed of any exorheic drainage system in Australia.

The main source of pollution in the 20th century and into the present is from drainage from cities and towns in the watershed.

This was from a drainage basin of, or about 76 percent of the entire Rogue watershed.