The 770-foot-tall Oroville Dam in northern California is the tallest in the U.S., holding back the force of 3.5 million acre-feet of water. Here's a look at why more rain could still cause the dam ...

Despite costing R657m to construct so far, the Xonxa Dam near Komani in the Eastern Cape has provided water for only six months, from December 2020 to May 2021.