As this animation of recently released NASA photos shows, São Paulo's worst drought in more than 80 years has taken a toll on the Brazilian state's water supply.

The animation shows the Jaguari Reservoir on Aug. 16, 2013 and then again just under a year later on Aug. 3, 2014, during the drought. The Jaguari Reservoir is just one of four lakes that comprise the Cantareira watershed, which supplies around 45 percent of Sao Paulo state's more than 40 million people with potable water.

Back in August, when the last satellite photo was taken, a report from Brazil's Public Ministry warned that Sao Paulo could run dry in 100 days after water levels in Cantareira dropped to around 12 percent. Since then, water levels at Cantareira have dropped to unprecedented levels, down to just 3.3 percent of capacity as of last week. As NASA notes, water levels in Jaguari were already low when the first image was taken in 2013, as evidenced by the "bathtub ring" along the edge of the reservoir.

That means that any current satellite photo of Jaguari Reservoir would likely look much worse than the animation above.

With reservoirs crippled, many residents across São Paulo, and São Paulo state report that they've experienced extended water outages. The Financial Times reports that residents in around 70 cities in São Paulo state have gone through some sort of water outage, even though Sabesp maintains that it has not implemented any water rationing across the state. Still, those outages also reach into São Paulo proper, where Bloomberg reports that 60 percent of residents have experienced at least one outage in the last 30 days, some lasting for days at a time.

According to weather.com senior meteorologist Jonathan Erdman, rainfall substantial enough to help replenish the nearly dry reservoirs is unlikely to come until the southern hemisphere summer, which peaks December through February.

"In those peak months, thunderstorms can be expected at least every third or fourth day," said Erdman. "Even so, it will likely take a very wet spring, summer and fall to begin to restore São Paulo reservoir levels back to some sort of normalcy."

Don't forget to click through the slideshow below. Because most of the photos of the Jaguari Reservoir in the slideshow were taken roughly around the same time as NASA's August 2014 satellite photo, you're given a rare glimpse into exactly how satellite imagery translates to imagery on the ground.