Tilstrømningen

Tilstrømningen is a Danish term used to describe the inflow or influx into a system, such as a region, organization, or ecological or physical system. It denotes the number or quantity of units entering within a specified period and is commonly measured alongside outflow (afstrømning) to assess net growth or change.

The word stems from til (toward) and strømning (flow), and in English texts it is often translated as inflow or influx. In Danish usage, tilstrømningen is a broad, neutral descriptor rather than a value on its own.

In demography and urban planning, tilstrømningen refers to the arrival of people into a locality, typically measured as the number of immigrants or movers per year. In economics, it can describe the inflow of capital, goods, or investment. In hydrology and environmental science, tilstrømningen can indicate the volume of water entering a reservoir, river basin, or watershed from rivers, rainfall, or groundwater. These inflows are analyzed together with outflows to assess growth, resource balance, or system dynamics.

Tilstrømningen is usually expressed per time unit and may be broken down by source or category. Analyses often address drivers, such as migration policy, economic conditions, or climate patterns, which influence inflows.

See also: migration, inflow, outflow, net migration, capital inflow, hydrological inflow.