A new study from the International Institute for Applied Systems Analysis (IIASA) shows how improving communication and involvement could bring consensus solutions for the embattled Rio Grande/Bravo, which is shared between the USA and Mexico.
The Rio Grande (called Rio Bravo in Mexico) is the lifeline to an expansive desert in the southwest USA and northern Mexico. From Colorado to the Gulf of Mexico, over 3000km, people depend on the river to quench their thirst and irrigate their crops. The river also forms the boundary between the USA and Mexico for 2034 km.
Yet as the river flows from the US, along the border, and into Mexico, it brings with it conflicts and challenges. The water level in the river is declining as use exceeds supply—an unsustainable situation. Water demand is rising as the population in the region grows, and corresponding economic growth drives continued development.
At the same time, water pollution imperils and stresses the delicate ecosystems supported by the river. Ecosystems are often the last to be considered when water levels are low. Moreover, climate change is expected to lower water levels even further, exacerbating the problems.
Water allocation between the two countries is governed by the 1944 Treaty between the United States of America and the United Mexican States relating to the utilization of the waters of the Colorado and Tijuana Rivers, and of the Rio Grande. The treaty was made at a time when the water resources were plentiful in relation to the population, and the environment was not yet something that policymakers considered at all.
The new study suggests that in order to preserve the river for the future, the involved parties can take advantage of an existing binational mechanism that allows flexibility to adapt the treaty without changing its structure. The study elaborates on four policy recommendations on how to do this.
“Everyone wants to preserve their water supply, even when there is not enough water,” explains Luzma Fabiola Nava, a postdoctoral fellow in the IIASA water program and the author of the new study published in the journal Water. “The water supply isn’t enough anymore to meet the increasing demands. If we don’t allow for flexibility in the treaty, all these problems are going to get worse.”
Consensus solutions for an international quandary
Nava, a native of Mexico who did her PhD in international studies in Canada, made an extensive analysis of documents and case studies related to the Rio Grande/Bravo water management practices and policies. She conducted two rounds of fieldwork and 77 interviews with people across the Rio Grande/Bravo basin, asking them about their perceptions and interests related to the river.
“The interviewees included water managers in Colorado; pecan farmers, water engineers and managers, researchers, citizens, and environmental groups in New Mexico and Texas; and water managers, members of the academia, and environmental groups in Mexico: basically anyone who relies on the river or cares about it. We wanted to cast as wide a net as possible because these are the people who know the river—who better than them to talk about the existing problems and the potential solutions,” says Nava.
Based on the perspectives and interests gathered through the interviews and analysis, Nava and colleagues proposed four policy recommendations that could help strengthen water resources management in the region:
1. Allow for reciprocal and temporary water re-distribution, meaning that during times of drought, water could be moved from one purpose to another. For example during a drought it might make economic sense for a farmer to transfer their water to another use, like city or municipal use or fish farming. Such a scheme would allow them to temporarily transfer their water right to another willing user, who would give them back their water in times of water abundance.
2. Take better advantage of the many experts in the region, and bring them together to work and communicate among themselves.
3. Formulate small-scale strategies to reach sustainability across the basin. For example this could mean, for the region above Elephant Butte Dam in New Mexico, strengthening efforts to restore native habitats and protect the forest. For the region between Elephant Butte Dam to El Paso, Texas it could mean removing sediments in the river and to bring it alive even during the non-irrigation season. And for the binational stretch of the river, to agree on a common interpretation on water quality related issues that need to be solved.
4. To reach a binational agreement for the Rio Grande/Bravo, adapting the scope of the 1944 treaty to account for pressing current problems and future challenges.
IIASA Water Program Director Simon Langan says that the Nava’s work confirms the increasing importance of global drivers such climate change, population growth, and ecosystem health, at the regional level. He says, “This study adds to and complements the growing global recognition of the importance of water and the potential for increasing conflict where increasing demand for water exceeds supply. Nowhere is this more important in significant transboundary river basins where there is an urgent need to recognize and develop wider participation aimed at building consensus on solutions for future water management.”
Nava, L. F., Brown, C., Demeter, K., Lasserre, F., Milanes-Murcia, M., Mumme, S. and Sandoval-Solis, S. (2016) Existing opportunities to adapt the Rio Grande/Bravo Basin Water Resources Allocation Framework. Water 2016, 8, x; doi:10.3390/
Collaborators on this study included researchers from Canada, the USA, and Austria: including researchers at New Mexico State University, the University of Vienna, Université Laval in Canada, Colorado State University, and the University of California, Davis.
MSc Katherine Leitzell | idw - Informationsdienst Wissenschaft
Scientists team up on study to save endangered African penguins
16.11.2017 | Florida Atlantic University
Climate change: Urban trees are growing faster worldwide
13.11.2017 | Technische Universität München
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
17.11.2017 | Physics and Astronomy
17.11.2017 | Health and Medicine
17.11.2017 | Studies and Analyses