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University of Washington (2003)

Drought Management in Mexico’s Río Bravo Basin

Vigerstøl Kari

Titre : Drought Management in Mexico’s Río Bravo Basin

Auteur : Kari Vigerstøl

Université de soutenance : University of Washington

Grade : Master of Science 2003

The Río Bravo Basin in northern Mexico is currently experiencing one of the most extreme and lengthy droughts in the past several decades. Reservoir levels in the basin have reached record low levels, agricultural and municipal curtailments have been implemented, and Mexico has been unable to deliver sufficient water required by the Treaty of 1944 to the U.S. for the past two five-year cycles. This thesis describes the creation of a simulation model used to analyze the current state of the water resource system and the effects of long-term and short-term water management policies on the ability to meet the needs of the basin. It was found that current water rights and system losses exceed the average year of inflow and therefore, efforts should be made to reduce demands through technification of the system and / or reduction of water rights. In addition alternative management policies must be implemented if Mexico is to reliably meet the Treaty of 1944 obligations. Five-year forecast runs with current initial conditions demonstrate that significant conflicts in use exist and that it is impossible to meet all needs in the short-term. An appropriate short-term policy would be to make irrigation deliveries similar to those made in the water year 2002 and release water to meet Treaty obligations as much as is possible while sustaining current reservoir storages.

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Page publiée le 11 janvier 2012, mise à jour le 12 septembre 2018