NASA | Show Me the Water

NASA | Show Me the Water

[rain, thunder] [rain, thunder] [waves]
As humans, we’re well aware we need water to live. Fortunately for us, we live on a water planet. But that doesn’t mean we have an entire globe of H2O to use as we please. So just how does the usable water break down for us? A giant 97 percent of Earth’s water is in the ocean, so we can’t use that. Three percent is freshwater, but even in that small sliver, about two percent is locked in glaciers, ice caps, and groundwater. That leaves about one percent of the freshwater on Earth that is accessible and usable by humans. Let’s imagine all of that accessible freshwater fits into this tiny pool. Now we’ll get to some small numbers when we look at global freshwater. [music] There really is a small fraction of usable and accessible freshwater on this water planet, so how do we use that tiny pool? In the United States, about 49 percent is used in thermoelectric power production. While agricultural irrigation makes up about 31 percent. Eleven percent goes to public use in our cities and towns. Four percent goes into industry and manufacturing, and one percent is domestic use. The water coming out of our faucets largely comes from precipitation. Measuring how much or how little precipitation falls can impact how we live our daily lives. Elsewhere around the globe, in developing countries, agricultural irrigation accounts for about 70 percent of freshwater use, while industrial use is 20 percent, and 10 percent for public consumption. In places where access to usable freshwater is greatly limited, knowing when and where precipitation may fall is critical to livelihoods. Precipitation replenishes these tiny reservoirs of freshwater, and data from the Global Precipitation Measurement mission will help farmers, ranchers, and policy makers in these regions plan for periods of drought, flooding and other extreme weather. [music] [music]

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About the Author: John Markowski


  1. My God… the view count says 1…

    Also, I didn't think that the U.S. used so much water for power. That's quite impressive.

  2. Well, that was a waste of my 3 minutes and a useless video. You can harvest fresh water from salt water, you know.

  3. Here's what you do… build a giant offshore solar desalanation plant and boom you solve the ocean levels rising and flooding our shores/cities and you'll be able to ship freshwater all over the world. It would also create jobs and give people fresh water all over the world.

  4. Confusing statistics have been listed in this video. You have interchanged the terms "percentage of water" and "percentage of fresh water".
    Edit: Incorrect parts removed.

  5. Salt water can be stripped of salt.Expensive,but it can be done.People with money could come together and take care of the entire Globe if they had a reason[ like money] It can be done Come on people wake up.Boil salt water,pour it in a little bowl,put the little bowl in side a big bowl,Put plastic wrap over the big bowl and wait 30 mins.There wont be that much water in that time ,but you should have about a cup of clean drinking water in the big bowl sitting around the little bowl in the middle.If you try this let me know!

  6. Idk about you guys, but this is quite depressing….
    I just hope someone finds a very cost efficient way to convert sea water into drinkable water on a large scale soon

  7. What I got out of that video is that if 2/3 of fresh water is locked in glaciers, then let's get at that! Go Go Global Warming!

  8. How stupid that they left out the discovery of fresh water in the Earth's crust, in total roughly – three – times the volume of all the water ON the planet!

  9. I think what NASA is doing here regarding measuring global precipitation is a good thing, and that they certainly deserve all the funding they need. However. . .

    While no doubt mathematically accurate, this video also seems to me to be rather sensationalistic, to say the least. The tiny percentages mentioned here fail to convey the vast quantities they actually represent. 

    Let's give this a little perspective: For example, the rivers of the world, which according to this video account for only .006% of the available fresh water, pour literally billions of gallons of fresh water per second into the oceans. Not per year, not per day, not per hour. Per second. The Mississippi alone can discharge well over five million gallons of fresh water per second into the Gulf of Mexico. This means that in about 12 seconds it discharges roughly the amount the entire USA uses in a day.

    And saying we can't use the majority of the water that is apparently somehow locked into the oceans is somewhat misleading. No, we don't have any practical and cost-effective way to desalinate water at present, but the water cycle does this for us. Water evaporates from the oceans, leaving the salt and other minerals behind, and is redistributed on land as rain, which is where all those billions of gallons of fresh water come from. 

    I'm sorry, but I think the information here is not being presented in the most accurate way, and  that videos like this are the main reason some people are constanty posting silly comments about how other people are "wasting water" in videos by leaving a faucet running for a few extra seconds, or by throwing water balloons.

    Should we wantonly poison water? No. Should we freak out about the neighbor watering their lawn or letting their kids play in the sprinkler? Well, in places where water is in short supply due to drought, or where the population has outgrown the municipal water supply, probably. But otherwise, no.  People seem to have the idea that once we use water, it is gone, as if the drain in every sink contains a black hole. Into the drain, and poof, no more water. This is simply not the case. It is a closed system, with water we use making its way back to the oceans, and water from the oceans constantly being redistributed onto land.

    Don't get me wrong, I feel sorry for the people who live in places where water is in short supply, but conserving water where it is plentiful does absolutely nothing to help people in places where it is not.

    And this video makes it sound as though we have a very tiny amount of fresh water available to us. This is not really the case. At all.

    And by the way, the way they are using the term in most of this video, it should be "fresh water," not "freshwater." There are freshwater fish, but what we drink is properly called fresh water.

  10. Hey i have an idea! Lets stop the war and fund NASA for space missions to harvest resources? Fking Warhead races.. HOPELESS 

  11. شكرا جزيلا ولدي ملاحظة اعتقد حان الوقت من خلال تجميع بعض الملاحظات على الفيديو للفضاء والتوصل الى حقيقة خلق الله للانسان واستخدام الانسان عند تحويل البصر او اشعة السمع الى التفكير ثم الى عمليات معقدة او اطلاق التفكير باستخدامه تفعاعلات شبيه او ادق من التفاعلات النووية خارج الكون ولذا يستطيع اطلاق تفكيره ….كما انه عند جمع الحروف للكلمة والنطق بها يستحيل علينا ان نعيد الكلمة الى مخارج حروفها او….كذلك عند السماع لكلمة وحدوث التفاعل داخل المخ لا يستطيع المخ اعادة الكلمة والتفاعلى الحادث الى الجزئات الاولية قبل السماع اي بصورة عكسية لسمع وكذلك بالنسبة للبصر لايستطيع بعد تحويل او التفاعل لاشعة البصر مع الضوء وتحويلها الى كهرومغناطيسية و…………….الى ما اقل من ذلك العمل بصورة عكسية …ويمكن تحويل السمع الى نطق او صوت وكذلك البصر الى صوت او …..لان الفرق بين استخدام البصر للتردد او الاشعة المستقيمو والاشعة او التردد التي يلقيها السمع من اجل التفاعل مع تردد الصوت ومن ثم السمع هو 90 تقريبا من وجهه نظري لذا لانستطيع ان نرى الكلمات لصوت في الفضاء اوان يسمع السمع الصور او مايشاهده البصر الى فسبحان من خلق الانسان في احسن صورة…..ولا تنسى ان تحدد الاشعة الضارة بالعين وليس اشعة الشمس لان التفاعل بينهما متناسب الجاذبية وليس……وشكرا جزيلا

  12. Even the Ocean is viable to usage, just extract the mineral salts that came from the land to begin with and its good to go. Given the rate of salinity in the Ocean from rainfall and then consider the age of the earth, hmmm. Science can be so foolish just because it is becoming religious under the umbrella of evolution. "Evolution vs God" by: Ray Comfort has more intellectual reasoning.

  13. Water prices will rise. Learn to conserve water. Nation wise a country must lower it's water consumption.

  14. Water prices will rise. Learn to conserve water. Nation wise a country must lower it's water consumption.

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