A Decision Support System to Improve Water Resources Management in the Conchos Basin |
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Authors: | Jesús R Gastélum Juan B Valdés Steven Stewart |
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Affiliation: | (1) HydroSystems, Inc., 9831 S 51st St Suite E-122, Phoenix, AZ 85044, USA;(2) Department of Civil Engineering and Engineering Mechanics, The University of Arizona, Tucson, AZ, USA;(3) Center for Sustainability of Semi-Arid, Hydrology, and Riparian Areas (SAHRA), Tucson, AZ, USA |
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Abstract: | The Conchos basin is the largest tributary to the lower part of the Rio Grande/Rio Bravo basin. During recent years a severe
drought has affected México’s ability to deliver water from the Conchos basin as required by the 1944 Treaty. In addition,
it has generated not only economic problems in the USA and México but also political frictions between these two countries.
The Mexican Conchos river has historically contributed with the highest amount of water to USA as established on the water
treaty. A Decision Support System (DSS) was developed for the Conchos basin in order to gain a better understanding of the
water resources management process in the basin, and to identify the alternatives to improve the cited process. The DSS is
a semi-distributed model, based on System Dynamics, and developed using Powersim software. The DSS has been used to evaluate
25 long and short tem water resources allocation alternatives for the two main basin’s users: Irrigation Districts and Water
Treaty. Some of the most important factors being tested on the 25 water management alternatives include National Commission
of Water’s yearly water allocation policy, reservoir operation rules, improvement on water distribution efficiencies, etc.
The DSS model shows that the historic water resources allocation implemented by the Federal government produces adequate results
as compared with the other tested water management alternatives. However, for short term drought scenarios, it is showed that
there could be other management alternatives that could perform better than the current water management allocation. In general,
the DSS shows what we already expect of dynamic models of systems to provide that understanding the effects of multiple interacting
variables in necessary to develop good natural resource management policies. |
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Keywords: | System dynamics Water resources management Simulation Water treaty Irrigation districts |
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