river flooding; overflow of rivers
Refers specifically to flooding caused by rivers overflowing their banks, often due to heavy rain or levee breaches. Used in news, disaster reports, and technical contexts.
River flooding occurred in various areas due to the typhoon.
The risk of river flooding is increasing.
洪水 is a more general term for flood, while 河川氾濫 specifically refers to flooding from rivers overflowing.
氾濫 alone can mean overflow or flooding in a broader sense, including metaphorical uses; 河川氾濫 is limited to river flooding.
Compound of 河川 (river) and 氾濫 (overflow, flooding).