Officials said yesterday a massive wildfire burning near Yosemite National Park grew overnight, but they were still making progress in containing it.

A raging wildfire in Yosemite National Park has rained ash on the reservoir that is the chief source of San Francisco’s famously pure drinking water.

A wildfire raging on the edge of the Yosemite National Park threatened both one of America’s premier sites of natural beauty and a reservoir that supplies San Francisco.

A giant wildfire raging out of control in the US has grown to nearly 200 square miles and spread into Yosemite National Park, as California Governor Jerry Brown declared a state of emergency for the city of San Francisco 150 miles away because of the threat to the city’s utilities.