flood devastation; damage from heavy rain
Refers to the destruction and suffering caused by torrential rain and subsequent flooding. Often used in news reports and disaster contexts.
Many houses were washed away in this year's flood devastation.
Recovery from the heavy rain disaster takes a long time.
Compound of 豪雨 (gōu, 'torrential rain') and 禍 (ka, 'calamity, misfortune').