definition

Flexible water level management involves anticipating precipitation that has been forecast. The water level is lowered before a shower is expected, to create additional water storage capacity. By using flexible natural fluctuations in the water level, improvements can be achieved in rainfall runoff characteristics. In wet periods water levels are allowed to rise, in dry periods water levels are allowed to lower. This reduces the use of pumping stations or water inlet systems.
(Urban Green-Blue Grids for sustainable and resilient cities, Flexible water level management, accessed on Sept. 2016) Example of this measure is the management of water level of swamps which establishes water level management arrangements in existing marshes during pre-alert, alert and after crisis and enabling/increasing water storage capacity.

Co-benefits and impacts

If a link between meteorological data and water level management is developed and eventually optimised, less surface water from other areas needs to be fed in and less seepage occurs. Since the water is almost always at the maximum level, salinization is reduced. Further, flexible water level management enables the facilitation of water drainage and removal. It may also result in system optimisation and reduce of localised flooding. This can also help to manage water and optimise its availability during droughts.

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Last modified: Jan. 18, 2017, 6:21 a.m.