Researchers develop new index to diagnose causes of water scarcity

May 14, 2013
Researchers develop new index to diagnose causes of water scarcity

The methodology has been tested in Ebro river basin and can lead to conclusions about the reliability and vulnerability of systems to water scarcity, as well as to diagnose their possible causes and to propose solutions.

From the water management perspective, water scarcity is an unacceptable risk of facing to serve water demands in the near future. Water scarcity may be temporary and related to or other accidental situation, or may be permanent and due to deeper causes such as excessive demand growth, lack of infrastructure for or transport, or constraints in water management.

Diagnosing the causes of water scarcity in complex systems is a precondition to adopt effective drought risk management actions. A group of researchers of the Technical University of Madrid (UPM) have developed four new indices to evaluate water scarcity that have been tested in the basin.

UPM researchers propose a methodology for interpretation of index values that can lead to conclusions about the reliability and vulnerability of systems to water scarcity, as well as to diagnose their possible causes and to propose solutions.

These four indices were presented to be used in conjunction and were conceived as an assistance tool to decision making in water resources planning. Indices are computed using simple mathematical relations, so that their meaning is intuitive for their target users.

Required data for index computations can be easily obtained from the results of water resources simulation models. Therefore, indices can also be used to summarize and transfer the results obtained from the models.

The conclusions of the analysis show that water scarcity are mostly related to the nonexistence of a good hydraulic infrastructure", explains Javier Martín Carrasco, professor of the Departamento de Ingeniería Civil: Hidráulica y Energética of the UPM and one of the authors of this job.

Criteria were given to interpret index values, focusing the analysis on decision support to establish lines of action in a context of proactive drought management. The analysis can lead to conclusions about the reliability and vulnerability of systems to , as well as help to diagnose their possible causes and to propose solutions.

In cases where several systems are analyzed, indices are also useful to make a comparative study between systems and to prioritize actions.

System diagnostics, based exclusively on the analysis of index values, were compared with the known reality as perceived by system managers, validating the conclusions in all cases.

Explore further: Australia launches 'Green Army' for environment

add to favorites email to friend print save as pdf

Related Stories

Distinguishing drought and water scarcity

Mar 15, 2013

Water resources can become strained by both natural factors such as drought and by human factors such as unsustainable use. Water resource managers can develop practices to reduce overuse of water resources, but they cannot ...

Current water resources in Europe and Africa

Mar 14, 2012

A new assessment of available water resources, published today by the Joint Research Centre (JRC), reveals that large areas in Spain and Eastern Europe have on average less than 200 mm freshwater available ...

New study of global freshwater scarcity

Mar 01, 2012

A new report published in the online journal PLoS ONE, analyzing water consumption in 405 river basins around the world, found that water scarcity impacts at least 2.7 billion people for at least one month each year. ...

Recommended for you

Australia launches 'Green Army' for environment

1 hour ago

Australia on Saturday launched its 'Green Army' which plans to recruit up to 15,000 young people for projects to conserve and rehabilitate the environment—the biggest land care mobilisation in the nation's ...

Tracking giant kelp from space

19 hours ago

Citizen scientists worldwide are invited to take part in marine ecology research, and they won't have to get their feet wet to do it. The Floating Forests project, an initiative spearheaded by scientists ...

Heavy metals and hydroelectricity

20 hours ago

Hydraulic engineering is increasingly relied on for hydroelectricity generation. However, redirecting stream flow can yield unintended consequences. In the August 2014 issue of GSA Today, Donald Rodbell of ...

What's wiping out the Caribbean corals?

21 hours ago

Here's what we know about white-band disease: It has already killed up to 95 percent of the Caribbean's reef-building elkhorn and staghorn corals, and it's caused by an infectious bacteria that seems to be ...

User comments : 0