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Snow-capped mountain ranges no longer have snow. Citizens fear they'll lose access to water. And farmers continue to draw scarce groundwater.

So what can California do to shore up its dwindling water supply?

Many places around the world have no idea how much groundwater and surface water they have, let alone how much they can use sustainably. The United Nation's proposed Sustainable Development Goals, however, could transform the way governments understand and manage scarce water resources.

With the changing global climate, river flooding in cities worldwide has emerged as an immense challenge to urban resilience.

Since average global temperatures are already rising and the effects of climate change are becoming increasingly palpable around the world, cities need to focus on adaptation measures in order to strengthen their resiliency and better protect billions of global urbanites.

WRI prides itself on making big ideas happen. For the past three decades, we've used rigorous research as a basis for creating positive change on the ground.

The result is dozens of outcomes in cities, regions and countries around the world.

In fast-urbanizing China, nearly 90 percent of coastal cities face some degree of water scarcity and roughly 300 million rural residents lack access to clean water.

To quench the country’s chronic thirst, the Chinese government has turned to desalination, aiming to produce as much as 3 million cubic meters of desalinated water daily by 2020, up from today’s 0.77 million cubic meter.