Heavy rain pounded the South Bay on Thursday afternoon, causing the Guadalupe River to rise and turning one popular park into a lake.
Curious onlookers watched from a distance as the Guadalupe quickly swelled, and at Lake Cunnigham Park in East San Jose, the lake grew much larger, overflowing its banks and spilling into a picnic area.
The sight impressed one park-goer.
"It's something spectacular; it's like a whole new lake," the visitor said. "You don't see that at another lake."
Crews worked Thursday to pump the water into a nearby creek. They also kept a close eye on the Guadalupe, where it converges with Los Gatos Creek, a known trouble spot during rainy weather.