Anh
low water level
low water stage
Đức
Niederwasserspiegel
Niederwasserstand
Niedrigwasserstand
Pháp
niveau d'étiage
low water level,low water stage /SCIENCE/
[DE] Niederwasserspiegel; Niederwasserstand; Niedrigwasserstand
[EN] low water level; low water stage
[FR] niveau d' étiage