Hoe does dam failure and snowmelt cause floods?

Dam failure can cause floods by releasing a large amount of water stored behind the dam all at once. This sudden release of water can overwhelm downstream areas and cause flash flooding.

Snowmelt can cause floods when a large amount of snow melts rapidly, especially if the ground is already saturated or frozen. The melted snow can quickly run off into rivers and streams, causing them to overflow their banks and flood nearby areas. Additionally, if the snowmelt is accompanied by heavy rainfall, the risk of flooding is even greater.