Ultrasonic water level meter
local water users’ association
Local water vapor system
the loss of local water head
abnormal water level in Yunnan
adjustment on positive water level
Agricultural water level
analog water level record
analogue self-recording water level device
analyses of water level influence
annual balanced underground water level or setting depth
annual highest water level
annual variation of water level
Anti-uplift Water Level
Anti-uplift water level for construction