It depends how much it has rained
Well, if you want to collect it like you might want to collect rocks or dolls, that won't work very well. If you want to catch it when it falls, then take a container (however big depending on how much you want to catch), put it out in the rain. the... POOF...you have rain water!
with glass
water inland usually drain into sea through rivers if there is to much rain the rivers and canals gets overflooded
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To help the rain water drain off easier.
Noah didn't need to bring water. He was able to collect water from the 40 days and 40 nights worth of raining. When the rain stopped, Noah still could collect water from the high flood waters.
It is essential to collect the rain water. This collected water could be used later.
If you mean rain gauge, it is used to collect rain and measure how much has fallen. This is how they can say "we received 2 cm of rain"
To collect and funnel rain water and provide a surface for photosynthesis.
Heavy rain causes the river level to rise, and the speed of the water increase. If the level rises too much, or there is a weakness in the containing river banks, the water will overflow and flood the surrounding land.
Rain
with a towel