Most of the 17 deaths have occurred in Sancheong, which has received nearly 800 millimeters of rain since Wednesday.
Floods have also occurred in Gapyeong in Gyeonggi Province, seven miles east of Seoul, after nearly 170 millimeters of rain. Two people are reported to have been killed and five are missing in the area.
South Korea is usually well prepared for the monsoon rains and the death toll is usually relatively low. Even in 2022, record rain and floods came, resulting in eleven deaths at the time.