grave,low water,minimum flow /SCIENCE,ENG-ELECTRICAL/
[DE] Niederwasser
[EN] grave; low water; minimum flow
[FR] étiage
minimum discharge,minimum flow,minimum water flow /SCIENCE/
[DE] niedrigster Niederwasserabfluss; niedrigster Niedrigwasserabfluss
[EN] minimum discharge; minimum flow; minimum water flow
[FR] débit d' étiage minimal