Water level logger

Water level recording equipment can be used for several applications:

• Short term installations, for example to monitor water level draw down and recovery during a borehole pump test
• Medium term, to show natural ground water level fluctuation or pumping draw down over days or weeks.
• Long term, to show fluctuation over a months, seasons or years, which may highlight the risk of groundwater depletion due to over abstraction or low recharge.

These are small, robust data loggers which can be used in two configurations:

1. Suspended installation, where the logger is retrieved periodically and the data is downloaded
2. Direct read installation, where data can be observed in real time or downloaded at the surface, and where data is being accessed remotely.

NOTE:

• A package of equipment will be selected according to the needs of each monitoring project. Cost will be provided in a quotation. For a guide price see attached information sheet.
• Information here is for In-Situ Rugged Troll system. Stock is held by a UK distributor. Other loggers/systems can be procured, for example Van Essen Diver, and will be shipped direct from the supplier.

How to select the equipment:

1. Choose whether you want suspended installation or direct read installation.

For each logger location two depths are required:

• The distance (m) below the ground surface that the logger will be installed. This will determine the length of the 'throw line'/suspension cord or direct read cable.
• The height of the water column (m) above the logger. This will determine the pressure rating of the logger.

2.  Choose a logger and cord or cable for each location.

3.  A method for setting up the logger and to retrieve the data is required. One per user or team.

4.  Direct Read method requires a communication device. One per user or team.