Eijkelkamp Soil & Water

Monitoring flow of Oude Rijn River after crane accident Alphen aan den Rijn - Case Study

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Courtesy of Eijkelkamp Soil & Water

Project

Monitoring flow of Oude Rijn River after crane accident Alphen aan den Rijn

Client

Rijnland District Water Control Board

Country

The Netherlands

Background information constructing monitoring network

On the 3rd of August 2015 a new bridge was supposed to be build across the Oude Rijn River in Alphen aan den Rijn, the Netherlands. Instead, a massive accident occurred when two building cranes and a part of the unfinished bridge fell over and landed on top of buildings.

After the accident came the realisation that (rain)water from the countryside might not have sufficient ways to reach the sea now that a part of the river is blocked. To analyse the influences, Eijkelkamp Soil & Water placed a water flow meter. This meter measures the velocity and flow. Rijnland District Water Control Board wants to know if water problems could rise in periods with lots of rain while the river is still being cleared of debris.

Furthermore, the waterboard wants to know what effect the clean up procedure has on the current flow of water and if any flooding could occur further down the river.

Where did Eijkelkamp Soil & Water make the difference?

Eijkelkamp Soil & Water delivered and installed a NIVUS station, consisting of 1 NivuChannel, 1 presure sensor and 2 Transit Time sensors.

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