a region or area over which water flows into a particular lake, reservoir, stream, or river
The line of division between two adjacent rivers or lakes with respect to the flow of water by natural channels into them; the natural boundary of a basin
the area of land above a given point on a stream that contributes water to the volume of a body of surface water; also referred to as a drainage basin
an event marking a unique or important historical change of course or one on which important developments depend; "the agreement was a watershed in the history of both nations"
The sum total of all the land and smaller bodies of water which drains into a particular stream or river
The entire region drained by a waterway or into a lake or reservoir More specifically, a watershed is an area of land above a given point on a stream that contributes water to the streamflow at that point
The region draining into a river, river system or body of water; the total land area, regardless of size, above a given point on a waterway that contributes runoff water to the flow at that point; all the land that serves as a drainage for a specific stream or river
The total land area, regardless of size, above a given point on a waterway that contributes runoff water to the flow at that point It is a major subdivision of a drainage basin The United States is generally divided into 18 major drainage areas and 160 principal river drainage basins containing about 12,700 smaller watersheds
If something such as an event is a watershed in the history or development of something, it is very important because it represents the beginning of a new stage in it. The election of Mary Robinson in 1990 was a watershed in Irish politics = turning point
A ridge of high land dividing two areas that are drained by different river systems Also called a waterparting Also, the region draining into a river, river system, or other body of water
An area of land that drains water, sediment and dissolved materials to a common receiving body or outlet The term is not restricted to surface water runoff and includes interactions with subsurface water Watersheds vary from the largest river basins to just acres or less in size In urban watershed management, a watershed is seen as all the land which contributes runoff to a particular water body; all the land that serves as a drainage for a specific stream or river Imagine a maple leaf The stalk of the leaf is the river The veins threading into the stalk are the tributaries flowing into the river The complete leaf represents a river drainage system, or watershed
An area from which water drains to a single point; in a natural basin, the area contributing flow (i e , water) to a place or point on a stream
A watershed consists of all the land and waterways that drain into the same body of water Smaller watersheds join with other watersheds to drain into larger watersheds; thousands of smaller watersheds drain into large rivers like the Mississippi or Colorado rivers Coweeta was an ideal place to site a hydrologic lab because the area contains many sub-watersheds, allowing scientists to carry on numerous research projects without fear of contamination from adjacent projects An excellent primer on watersheds, including a utility that allows you to find the watershed where you reside
{i} ridge or high area dividing land drained by different rivers or systems; area which drains into a river; point of change, turning point
The specific land area that drains water into a river system or other body of water