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2 cards from this section. Quick, good the night before a test.
What happens to rainfall depth as the area increases for a fixed duration?
Think about how rain spreads over a larger surface.
What does the term 'saturation point' refer to?
Consider when soil becomes unable to absorb more water.
What happens to rainfall depth as the area increases?
Remember the rule of spreading rainfall over larger surfaces.
True or False: DAD curves become steeper with increased duration.
Consider the overall trend with data points.
You have a DAD curve that shows a rainfall depth of 80 mm for a 10 km² area over 12 hours. How would this change if the area is expanded to 50 km²? Calculate the expected average rainfall depth if the trend holds.
Use the trend observation that deeper analysis suggests lower average depth as area increases.
Consider a design storm requiring an analysis of two DAD curves—one representing a local storm and another a regional storm. Discuss how each curve's characteristics would affect design considerations for flooding.
Focus on how depth-area relationships dictate spatial planning.
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