In a new study, researchers tried to map out how water wars will emerge around the world and which countries are most likely to see water-related conflict in the coming decades.
The study, led by scientist Dr Fabio Farinosi from the European Commission's Joint Research Centre was published this week in Global Environmental Change.
The paper was an attempt to illustrate where future water wars, or "hydro-political issues" might arise.
"Competition over limited water resources is one of the main concerns for the coming decades," researchers wrote.
The effects of climate change coupled with population growth are expected to drive competition for water, potentially exacerbating political tensions in parts of the globe.
"Although water issues alone have not been the sole trigger for warfare in the past, tensions over freshwater management and use represent one of the main concerns in political relations between riparian states and may exacerbate existing tensions, increase regional instability and social unrest."
Looking at the years 2050 and 2100 under different daily temperature and precipitation estimates, different emissions forecasts and other factors, researchers designed an algorithm in to predict the likelihood of conflict under different scenarios.
Worldwide, the researchers found that rising temperatures and population growth will increase the chance of cross-border conflicts by between 75 to 95 per cent in the next 50 to 100 years.
The study identified potential hot spots, which were often places where a water source such as a lake or basin was shared by a number of countries or political groups.
Water sources like the Nile, Ganges-Brahmaputra in the Indian subcontinent, the Indus river in Asia, the Tigris-Euphrates and Colorado rivers were highlighted as potential hot spots.
But Dr Farinosi was quick to point out that tension won't necessarily boil over into conflict. "It depends on how well prepared and equipped the countries are to co-operate," he said in a statement. "This is where we hope our research can help, by raising awareness of the risks so that solutions can be sought early on."
Scientists, the United Nations and world governments have been sounding the alarm about water-related conflict for years.
In 2012, the US Director of National Intelligence said the risk of conflict would grow as water demand is set to outstrip sustainable current supplies by 40 per cent by 2030.
"These threats are real and they do raise serious national security concerns," Hillary Clinton said at the time.
South African city Cape Town went dangerously close to running out of water earlier this year.
Meanwhile cities across the world are becoming increasingly thirsty as the demand for water grows and supply dwindles. From Bangalore to California scientists are offering up grim predictions.
Groundwater is being pumped so aggressively that land is sinking. Some neighbourhoods in Beijing (the world's fifth most water-stressed city) are sinking at as much as 10 centimetres a year.
"What's happening bit by bit is that water scarcity is becoming increasingly common all around the world, no matter where you look as country after country hits the limit of what it can use," Professor Mike Young, a researcher in Water and Environmental Policy at the University of Adelaide told news.com.au last year.
"Whether that's in Australia, California, China, India, Pakistan, or right throughout Africa."
