ERCZO -- Groundwater Depth -- Well water levels (12 wells) -- Rivendell -- (2008-2015)

Well water level is derived value that is measured as distance from surface (meters) and is always negative. Pressure transducers are used to measure water depth above instrument. Cable length is subtracted with an adjustment for well head height above surface.

WaterLevel_m = -1 * (CableLength_m - WellHead_m - WaterDepth_m)

Data can be accessed through the Berkeley Sensor Database (http://sensor.berkeley.edu). Login as 'guest' with no password.

Date Range Comments: sample interval is 5 minutes.

井水水位为从地表测量的距离值（米），始终为负值。压力传感器用于测量仪器上方的水深。通过从电缆长度中减去电缆长度以及考虑地表以上井口高度的调整值，得到井水水位。数据可通过伯克利传感器数据库（http://sensor.berkeley.edu）获取。以‘guest’身份登录，无需密码。日期范围注释：样本间隔为5分钟。