Quantity of water seeping through, around or under a dam is of great importance in analysing structural behaviour of a dam. For measuring seepage, the drain water is taken through collection channel(s) for discharge into the downstream of dam. The collection channel/channels are terminated in a collection chamber where the discharge is accurately measured with a ‘V’ notch and a water level measurement system.
In order to measure discharge over the weir accurately, the head over the weir is measured with a vibrating wire level sensor. Generally, to avoid water level variations caused by waves, turbulence or vibration, the head water level should be measured in a stilling well-constructed upstream of the weir in the collection channel.
The Encardio-rite model ESM-11V seepage monitoring system is designed for precision measurement and monitoring of water level in weirs, tanks and reservoirs and seepage in dams. It basically consists of a submersible cylinder suspended from a vibrating wire load transducer. The component parts are enclosed in a perforated PVC pipe.
The Encardio-rite seepage monitoring system can be supplied with a stainless steel V-notch weir, if ordered separately, to monitor rate of flow of water.