Heavy rains fell during the night until Friday in Sarajevo and the surrounding area.
On Friday, the city was hit by power outages for long periods.
Schools closed, roads were blocked and residents were rescued by rubber dinghies.
An estimated hundreds of homes were evacuated.
A facility where you fill oxygen tubes that are used in covid care throughout the country has ended up under water.
- We could not save the equipment, we had to save lives, says Avdo Delic, the owner company Bosnia's manager, to the news agency AP.
The heavy rains followed on several unusually hot days, with temperatures above 20 degrees.
It will continue to rain until Sunday, according to forecasts.