A wave of water that gushed out of an Alaskan glacial lake and sent a river surging to a new record level is causing flooding issues in the state capital of Juneau for the third consecutive August.

Emergency officials say new barriers appear to have worked as planned, with only scattered reports of water leaks.

These floods, which began more than a decade ago, have become increasingly destructive in recent years and now pose a persistent summertime threat. This time, Alaska’s capital city fortified itself against the floodwaters.