Cascading Climate Calamities Target West’s Water, Legal System

A dire United Nations climate change report confirms what water lawyers in the West have known for a long time—that drought is becoming the norm in the region, and adaptation is essential.

“Every time we see it written down, it gets a little more real,” said William Caile, a water lawyer who is of counsel at Holland & Hart LLP in Denver, referring to the report’s forecasts of water scarcity.

The report, released Monday by the Intergovernmental Panel on Climate Change (IPCC), is a 3,675-page deep-dive into what the latest scientific research says about what’s at risk as fossil fuels continue to warm the planet. Water scarcity amid rising air and streamwater temperatures will afflict much of North America, exacerbating biological diversity losses, agricultural productivity decline, and wildfire, the report found.

The Southwest is among the regions that the IPCC says will soon be profoundly different. The Colorado River, which provides water to 40 million people from Denver to Los Angeles, courses through the increasingly arid Southwest, which is approaching a “tipping point” at which long-term water scarcity conflict with high water use and farming, the report concludes.