Rush (hydrogeology)

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In the hydrology of water bodies, the word noise refers to a gently sloping stretch of water with a higher flow velocity and water turbulence than in the surrounding water course. In contrast to the scour , noises have a relatively constant high turbulence with changing water flows with increasing discharge . In a natural body of water, noise and scour alternate regularly.

In renaturation , artificial field stone noise is used in many cases in order to remove step-shaped bedfalls (for example weirs ) that hinder fish migration and to improve the structuring and settlement of the river bed. Sand-free, gravelly rushes are important spawning grounds for brown trout , for example , as they ensure an adequate supply of oxygen to the spawn . Noise is therefore sometimes referred to as spawning banks .

See also

literature

Individual evidence

  1. Measures to improve the bed structure and to reduce unnatural sand loads on the Este