(drainage basin or river basin) the land area that drains water to a particular stream, river, or lake It is a land feature that can be identified by tracing a line along the highest elevations between two areas on a map, often a ridge The ridge itself is a watershed
A defined geographic area served by a hospital, clinic, or dental clinic and delineated on the basis of such factors as population distribution, natural geographic boundaries, and transportation accessibility For the Department of Defense (DoD) Components, those geographic areas are determined by the Assistant Secretary of Defense (Health Affairs) and are defined by a set of 5-digit zip codes, usually within an approximate 40-mile radius of military inpatient treatment facilities
The land surface on which rain falls Sometimes called a 'water catchment' When referring to particular streams or rivers, it is the land surface from which water (rain) flows into them, sometimes through tributaries (feeder streams)
A geographic area defined and served by a health program or institution such as a hospital or community mental health center which is delineated on the basis of such factors as population distribution, natural geographic boundaries, and transportation accessibility By definition, all residents of the area needing the services of the program are usually eligible for them, although eligibility may also depend on additional criteria
Geographic area defined and served by a hospital on the basis of such factors as population distribution, natural geographic boundaries and transportation accessibility
another name for drainage basin, the area from which water is collected by a river and its tributaries cave cavity in the Earth's crust usually produced by the action of underground water or by waves on a seacoast (coastal erosion)
Area drained by a river Sometimes the catchment area is referred to as the watershed of the river Properly, the catchment area is defined by a surrounding watershed or divide
The area of land from which it finds its way into a particular watercourse, lake or reservoir By analogy, the area which contains those people who can be expected to obtain goods, services, employment or other benefit from a particular property More especially related to retail premises, where the success of forecasting depends on the accuracy of estimating the number of purchasers (catchment population) likely to be attracted from the different parts of the area and the average expenditure which might be expected from them
Area or region whose economic, political, cultural, social, etc influence is felt over a larger area, it is the radius of action of a given point In transportation, it consists in the area under influence of a focal point towards which centripetal fluxes converge; an interception zone of several carriers Also labeled as Area of Influence or Hinterland