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Osee Posted 19 years ago
Vocabulary

stormwater or rainwater?

A rooftop garden is designed to provide stormwater control and help keep the building cool in the sun. And an underground tank can store one million seven hundred thousand liters of rainwater for air conditioning and other systems.

I feel strange about the use of stormwater as above. Why not just using rainwater? Using stormwater makes me think that the garden is so strong that can stand the storm. Please help. Thanks a lot.
  

Top answer

Hi Osee The word stormwater includes water from sources other than just rain -- melting snow, for example. ) at any one given time. Rainwater , on the other hand, is simply water that is a result of rain.

  • Hi Osee The word stormwater includes water from sources other than just rain -- melting snow, for example.
  • ) at any one given time.
  • Rainwater , on the other hand, is simply water that is a result of rain.
  • The quantity at any one given time might be very small or it might be quite a lot.
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7 Answers
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Hi Osee

The word stormwater includes water from sources other than just rain -- melting snow, for example. To me, the word also suggests unusually large quantities of water (from rain, snow, hail, or even flooding, etc.) at any one given time.

Rainwater, on the other hand, is simply water that is a result of rain. The quantity at any one given time might be very
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Stormwater is quite rare, it's not in some good dictionaries.
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Osee, this is a very good time for me to see this question. I have just finished writing an article on "green roofs" (the gardens on the rooftops) and "stormwater" is indeed the right word.

It's an environmental term - the water that runs off of buildings, down streets, across parking lots, etc., is called stormwater, and "stormwater mangement" is part of being in compliance with environ
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GG is right:

Maryland's Stormwater Management Program
http://www.mde.state.md.us/Programs/WaterPrograms/SedimentandStormwater/index.asp
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Imagine my relief at being right. It's my job.

I'm sure my boss is relieved that I know what I'm talking about here too.

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Good post, GG. I guess that explains my feeling of "larger quantities" of water. Stormwater has to run off land somehow since it cannot be absorbed directly by the land if it is paved, for example. A "green roof" (garden) will generally absorb rainwater and water from melting snow as opposed to running off the roof into gutters, downspouts and ultimately into storm drains.
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I can tell you all sorts of benefits of a green roof! You wouldn't believe how much energy you can save cooling a building with a green roof on it!

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