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In a world of record droughts and surging demand for reliable water resources, decision-makers need speed, scale, and smarts. Here’s how one unique collaboration is delivering all three.

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In a startling development for California’s water system, state officials have confirmed the infestation of invasive golden mussels (Limnoperna fortunei) at two major Southern California lakes: Silverwood Lake in San Bernardino County and Pyramid Lake in Los Angeles County.

The rapid spread of this highly destructive species from the Sacramento-San Joaquin Delta to the southern reaches of the State Water Project marks a new chapter in the state’s ongoing struggle to safeguard both water infrastructure and delicate aquatic ecosystems. The golden mussel is notorious worldwide for its ability to multiply quickly, clog pipes and screens, destabilize local ecology, and create costly headaches for urban, agricultural, and recreational water systems.

A new report from Colorado River researchers found water levels at the nation’s two largest reservoirs are dropping fast and on track for dire consequences. The authors are calling on policymakers to move with urgency and protect Lake Powell and Lake Mead. Negotiators are locked in talks about the future of those reservoirs after 2026, when the current rules for managing water there expire.

But the authors of this report say a dry year could bring levels so low, the reservoirs stop working before any new rules go into effect.

California was supposed to kick off a new era of dam building when voters passed a $7.5 billion water bond in 2014. But ten years later, only one dam project from the list is still alive.

Sites, which would divert water from the Sacramento River into an offstream reservoir capable of storing water for 3 million homes annually, is the sole survivor, as of Wednesday, of a batch of four new or expanded reservoirs that California officials had envisioned would bolster supplies for cities and farmers.