To do this, researchers first mapped the areas most affected by drought, based on long-term weather data and information about crop types and their growing seasons. These areas were then scored based on how much risk they face from drought and how important they are for food production. Next, a range of environmental and social factors - like water availability, soil conditions, and ease of access - were considered to find the most suitable locations for reservoirs.

The result is a step-by-step method that can help decision-makers plan for future water needs in agriculture. By combining climate data with local farming and land conditions, this approach helps target investments in water infrastructure where they are needed most, making farming more resilient in a changing climate.