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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/hess-2018-241
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
09 May 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Hydrology and Earth System Sciences (HESS).
Do users benefit from additional information in support of operational drought management decisions in the Ebro basin?
Clara Linés1, Ana Iglesias2, Luis Garrote3, Vicente Sotés2, and Micha Werner1,4 1IHE-Delft, Department of Water Science and Engineering, Delft, the Netherlands
2Technical University of Madrid, Department of Agricultural Economics and Social Sciences, Madrid, Spain
3Technical University of Madrid, Department of Civil Engineering: Hydraulics, Energy and Environment, Madrid, Spain
4Technical University of Madrid,Department of Plant Production, Madrid, Spain
Abstract. We follow a user based approach to examine operational drought management decisions and how the role of information such as from remote sensing can be assessed. First we consulted decision makers at basin, irrigation district and farmer scale in the Ebro basin to investigate the drought related decisions they take and the information they use to support their decisions. This allowed us to identify the courses of action available to the farmers and water managers, and to analyse their choices as a function of the information they have available to them. Based on the findings of the consultation, a decision model representing the interrelated decisions of the irrigation association and the farmers was built with the aim to quantify the effect of additional information on the decisions. The modelled decisions, which consider the allocation of water, are determined by the expected availability of water during the irrigation season. This is currently primarily informed by observed reservoir level data. The decision model was then extended to include additional information on snow cover from remote sensing. The additional information was found to contribute to better decisions in the simulation and ultimately higher benefits for the farmers. However, the ratio between the cost of planting and the market value of the crop proved to be a critical aspect in determining the best course of action to be taken and the value of the (additional) information. Risk averse farmers were found to benefit least from the additional information, while less risk averse farmers can benefit most as the additional information helps them take better informed decisions when weighing their options.
Citation: Linés, C., Iglesias, A., Garrote, L., Sotés, V., and Werner, M.: Do users benefit from additional information in support of operational drought management decisions in the Ebro basin?, Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2018-241, in review, 2018.
Clara Linés et al.
Clara Linés et al.
Clara Linés et al.

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In this paper we follow a user based approach to examine operational drought management decisions and how the role of information on them can be assessed. The approach combines a stakeholder consultation and a decision model representing the interrelated decisions of the irrigation association and farmers. The decision model was extended to include information on snow cover from satellite. This contributed to better decisions in the simulation and ultimately higher benefits for the farmers.
In this paper we follow a user based approach to examine operational drought management...
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