Stratified water

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Stratum water is dammed to a water or low water-permeable layer of soil surface water . The water-retaining soil layer prevents the water from seeping into deeper layers. It is also sometimes referred to as floating groundwater .

As a rule, stratum water has no contact with the groundwater .

The term stratified water is mainly used in geotechnical engineering . In soil science there is the term backwater , which roughly corresponds to stratified water .

Influence on structures

Stratified water mostly lies in higher soil layers and is therefore often more dangerous for structures than the groundwater, which is mostly in deeper layers. Remedial measures against stratified water are water-impermeable structures ( black tub , white tub ), drainage or similar.

In order to lower backwater and stratified water during the construction phase, a permit under water law is required. The same applies to the permanent introduction of drainage water into the drainage system or into a receiving water .

Drinking water

Since the stratum water is dammed up surface water , it is not suitable for the production of drinking water . After appropriate processing, it can be used as industrial process water in some cases .

Web links

Individual evidence

  1. Layers of water in the Google book search.
  2. | Here z. B. in Hamburg.
  3. | WHG Water Resources Act