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How do snowfall and rain measurements help predict floods?
Quick Answer
Scientists measure how much water is stored in snowpack and how fast it melts, because that meltwater can become river floodwater.
The Full Story
Snowpack acts like a natural reservoir. When spring warms the landscape, the snow melts and releases water into streams and rivers, sometimes quickly if temperatures rise fast or rain falls on top of snow. Hydrologists measure snow depth, snow water equivalent and temperature to estimate how much water may flow downstream. These measurements help flood managers, farmers and reservoir operators prepare for seasonal high water.
Key Facts
1.Snow water equivalent measures how much water is in snow
2.Rapid melting can increase flood risk
3.Rain on snow can speed up runoff
YouTube Angle
Suggested video title for this topic:
"How can winter snow turn into spring floods?"
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