Optimality Versus Viability in Groundwater Management with Environmental Flows
AffiliationUniv Arizona, iGLOBES
Groundwater dependent ecosystem
Water budget myth
MetadataShow full item record
PublisherELSEVIER SCIENCE BV
CitationPereau, J. C., Pryet, A., & Rambonilaza, T. (2019). Optimality Versus Viability in Groundwater Management with Environmental Flows. Ecological Economics, 161, 109-120.
Rights© 2019 Elsevier B.V. All rights reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractThe protection of environmental flows is a main challenge pursued by water regulating agencies in their groundwater management policies. A stylised hydro-economic model with natural drainage is used to compare the outcome of the optimal control approach in which environmental flows are introduced as an externality with the viable approach in which environmental flows are modelled as a constraint to satisfy. The optimal and viable paths for the water table, water extraction for irrigation and environmental flows are analytically derived together with their long-term values. We show how results are sensitive to some key parameters like the discount factor and the monetary value of the externality in the optimal control approach. We show how the value of the environmental flows target in the viable approach can be derived from the optimal control approach. Numerical simulations based on the Western La Mancha aquifer illustrate the main results of the study.
Note24 month embargo; published online: 27 March 2019
VersionFinal accepted manuscript
SponsorsFrench National Research Agency (ANR) within the Cluster of Excellence COTE [ANR-10-LABX-45]