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The regional feasibility of augmented local water storages


Nikkels, MJ and van Bakel, PJT and Delsman, JR and de Louw, PGB and van Oel, PR and Stuyt, LCPM and Vellinga, P and Velstra, J and Hellegers, PJGJ, The regional feasibility of augmented local water storages, Proceedings of the 21st International Congress on Modelling and Simulation, 29 November - 4 December 2015, Gold Coast, Australia, pp. 2276-2282. ISBN 978-0-9872143-5-5 (2015) [Refereed Conference Paper]

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Copyright 2015 The Modelling and Simulation Society of Australia and New Zealand Inc.

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Local water storages can contribute significantly to meet regional demands for water and offer governments a strategy for reducing or delaying investment in large-centralised water infrastructure. Local water storages include ponds, canals, drainage systems and subsurface aquifers. Augmentation of local water storages and determination of their regional feasibility is not fully understood. Cost-effectiveness, physical characteristics, interactions between measures and interactions with the national water system are of crucial importance here. Dutch national and regional water managers currently negotiate about water distribution and regional self-reliance. However, in the Dutch negotiation, the potential of local groundwater storage, as a way to overcome periods of drought, is generally underestimated.

In this study, we assessed the potential of local groundwater storage measures, regarding technical storage capacity (in cubic meters (m3)) and costs (euro/ha/year and euro/m3), in a case study area in the Netherlands (Wieringen + Wieringermeerpolder) by means of a novel dynamic modelling method, called the Fresh Water Options Optimizer (FWOO).

The first results of the FWOO method show that Wieringen + Wieringermeerpolder is able to store between 35 million cubic meters (Mm3) and 80 Mm3 with the seven local groundwater storage measures that are taken into account. This is 80% to 180% of the summer demand, based on a water demand of 200 mm during the growing season. The costs for the combination of measures in Wieringen + Wieringermeerpolder are between 0.10 euro/m3 and 0.13 euro/m3.

The FWOO is not ready yet. Not all dynamics of augmenting local waters storage measures are (modelling wise) properly addressed. For example, temporal aspects of water supply and demand are not yet taken into account. Besides, preferences and needs of other water users (nature, industry, and urban areas) might lead to undiscovered options to store and reuse water. To inform regional water managers, efforts to compare the costs of local measures with centralized water storage and provision strategies are needed.

Although the model is still under improvement, these first results open new perspectives on the potential of regional self-reliance and should be taken into account during negotiations around water distribution between national and regional water managers.

Item Details

Item Type:Refereed Conference Paper
Keywords:fresh water supply management, scale issues, regional self-reliance, decision making
Research Division:Earth Sciences
Research Group:Hydrology
Research Field:Hydrology not elsewhere classified
Objective Division:Environmental Management
Objective Group:Fresh, ground and surface water systems and management
Objective Field:Measurement and assessment of freshwater quality (incl. physical and chemical conditions of water)
UTAS Author:Nikkels, MJ (Mr Melle Nikkels)
ID Code:126713
Year Published:2015
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2018-06-21
Last Modified:2018-07-17

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