Monitoring tools for dredging

The monitoring approach employed for characterisation of sediment discharges and plumes generated during aggregate dredging in the Eastern English Channel is described. Quantification of both overflow spillway losses and screening losses is considered. It is shown that largely standard, “off the shelf” instruments can be used to undertake effective monitoring both around working aggregate dredgers and within their hoppers. The performance of each type of instrument is addressed and sample results are presented.