A rush of glacial floodwater swept down Alaska’s Mendenhall River on Wednesday morning, prompting evacuation warnings in parts of Juneau.

City officials say the flood threat has ended and credit barriers with preventing more damage from the Mendenhall Glacier outburst

The temporary levee the city installed along the Mendenhall River this year protected hundreds of homes nearby. But water still leaked through some sections and flooded several streets and homes.

For three years in a row, Juneau has had unprecedented flooding in August from a melting glacier. This year, officials built a levee to protect the city. It seems to have helped, but it's temporary.

A powerful surge of glacial meltwater is once again testing Juneau's resilience, and this time, the ripple effects could reach well beyond city limits — impacting thousands of travelers headed to Alaska’s capital by cruise ship.

The glacial flooding that sent residents of Alaska’s capital city scrambling this week has become an annual ordeal for those who live along the picturesque river that winds from the nearby Mendenhall Glacier.

For the third consecutive year, a wave of water gushed out of an Alaskan glacial lake, threatening the state’s capital city of Juneau. But, flood barriers installed by the city managed to prevent disaster from unfolding in the picturesque port town despite record-breaking water levels this week.

The glacial release from Suicide Basin above Mendenhall Lake has begun. A flood warning is in place for Mendenhall Lake near Skaters Cabin Road, the Mendenhall campground, and the visitor center until Wednesday.