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Tracking the California Drought

Californians are living in the state’s driest period on record. Officials have urged people to conserve as reservoirs run low and demand exceeds a supply stressed by climate change.

A large share of the state’s water is used for agriculture, and growers have seen water deliveries slashed during the drought. State regulators track water use in cities and towns across the state, collecting monthly data from more than 400 urban suppliers that serve about 37.2 million Californians.

The Cruelest Summer Yet? California Is Facing Drought, Heat, Power Outages and Fires — All at Once

The Cruelest Summer Yet? California Is Facing Drought, Heat, Power Outages and Fires — All at Once

Even with the upheaval of the pandemic mostly behind us, the menace of drought and rising temperatures is threatening to derail the return to normal.

This year’s extraordinarily dry, warm weather, which is expected to continue in the coming months, is stoking fears of a multitude of problems: increasing water restrictions, extreme heat, power outages, wildfire and smoke — potentially all of the above in one vicious swoop.

Why Toxic Algae Blooms Are on the Rise Across California — and Expected to Get Worse

Rising temperatures and stagnant water generally signal trouble for human life, but they make for a great environment for the bright, blue-green scum often found in lakes, rivers and reservoirs that flourishes and blooms in hot weather.

These scum blooms, known as harmful algal blooms, are natural parts of the ecosystem, but can also release toxins that sicken or even kill people and animals. They’re becoming more common as temperatures rise and water systems are starved and disrupted, threatening not only public and wildlife health, but the state’s water supply, as well as beloved recreation areas like Lake Merritt in Oakland.