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EE_
5th June 2013, 09:37 AM
The Colorado River, The High Plains Aquifer And The Entire Western Half Of The U.S. Are Rapidly Drying Up
By Michael, on May 23rd, 2013

What is life going to look like as our precious water resources become increasingly strained and the western half of the United States becomes bone dry? Scientists tell us that the 20th century was the wettest century in the western half of the country in 1000 years, and now things appear to be reverting to their normal historical patterns. But we have built teeming cities in the desert such as Phoenix and Las Vegas that support millions of people. Cities all over the Southwest continue to grow even as the Colorado River, Lake Mead and the High Plains Aquifer system run dry. So what are we going to do when there isn't enough water to irrigate our crops or run through our water systems? Already we are seeing some ominous signs that Dust Bowl conditions are starting to return to the region. In the past couple of years we have seen giant dust storms known as "haboobs" roll through Phoenix, and 6 of the 10 worst years for wildfires ever recorded in the United States have all come since the year 2000. In fact, according to the Los Angeles Times, "the average number of fires larger than 1,000 acres in a year has nearly quadrupled in Arizona and Idaho and has doubled in every other Western state" since the 1970s. But scientists are warning that they expect the western United States to become much drier than it is now. What will the western half of the country look like once that happens?

A recent National Geographic article contained the following chilling statement...

The wet 20th century, the wettest of the past millennium, the century when Americans built an incredible civilization in the desert, is over.

Much of the western half of the country has historically been a desolate wasteland. We were very blessed to enjoy very wet conditions for most of the last century, but now that era appears to be over.

To compensate, we are putting a tremendous burden on our fresh water resources. In particular, the Colorado River is becoming increasingly strained. Without the Colorado River, many of our largest cities simply would not be able to function. The following is from a recent Stratfor article...

The Colorado River provides water for irrigation of roughly 15 percent of the crops in the United States, including vegetables, fruits, cotton, alfalfa and hay. It also provides municipal water supplies for large cities, such as Phoenix, Tucson, Los Angeles, San Diego and Las Vegas, accounting for more than half of the water supply in many of these areas.

In particular, water levels in Lake Mead (which supplies most of the water for Las Vegas) have fallen dramatically over the past decade or so. The following is an excerpt from an article posted on Smithsonian.com...

And boaters still roar across Nevada and Arizona’s Lake Mead, 110 miles long and formed by the Hoover Dam. But at the lake’s edge they can see lines in the rock walls, distinct as bathtub rings, showing the water level far lower than it once was—some 130 feet lower, as it happens, since 2000. Water resource officials say some of the reservoirs fed by the river will never be full again.

Today, Lake Mead supplies approximately 85 percent of the water that Las Vegas uses, and since 1998 the water level in Lake Mead has dropped by about 5.6 trillion gallons.

So what happens if Lake Mead continues to dry up?

Well, the truth is that it would be a major disaster...

Way before people run out of drinking water, something else happens: When Lake Mead falls below 1,050 feet, the Hoover Dam's turbines shut down – less than four years from now, if the current trend holds – and in Vegas the lights start going out.

Ominously, these water woes are not confined to Las Vegas. Under contracts signed by President Obama in December 2011, Nevada gets only 23.37% of the electricity generated by the Hoover Dam. The other top recipients: Metropolitan Water District of Southern California (28.53%); state of Arizona (18.95%); city of Los Angeles (15.42%); and Southern California Edison (5.54%).

You can always build more power plants, but you can't build more rivers, and the mighty Colorado carries the lifeblood of the Southwest. It services the water needs of an area the size of France, in which live 40 million people. In its natural state, the river poured 15.7 million acre-feet of water into the Gulf of California each year. Today, twelve years of drought have reduced the flow to about 12 million acre-feet, and human demand siphons off every bit of it; at its mouth, the riverbed is nothing but dust.

Nor is the decline in the water supply important only to the citizens of Las Vegas, Phoenix, and Los Angeles. It's critical to the whole country. The Colorado is the sole source of water for southeastern California's Imperial Valley, which has been made into one of the most productive agricultural areas in the US despite receiving an average of three inches of rain per year.



You hardly ever hear about this on the news, but the reality is that this is a slow-motion train wreck happening right in front of our eyes.

Today, the once mighty Colorado River runs dry about 50 miles north of the sea. The following is an excerpt from an excellent article by Jonathan Waterman about what he found when he went to investigate this...



Fifty miles from the sea, 1.5 miles south of the Mexican border, I saw a river evaporate into a scum of phosphates and discarded water bottles. This dirty water sent me home with feet so badly infected that I couldn’t walk for a week. And a delta once renowned for its wildlife and wetlands is now all but part of the surrounding and parched Sonoran Desert. According to Mexican scientists whom I met with, the river has not flowed to the sea since 1998. If the Endangered Species Act had any teeth in Mexico, we might have a chance to save the giant sea bass (totoaba), clams, the Sea of Cortez shrimp fishery that depends upon freshwater returns, and dozens of bird species.

So let this stand as an open invitation to the former Secretary of the Interior and all water buffalos who insist upon telling us that there is no scarcity of water here or in the Mexican Delta. Leave the sprinklered green lawns outside the Aspen conferences, come with me, and I’ll show you a Colorado River running dry from its headwaters to the sea. It is polluted and compromised by industry and agriculture. It is overallocated, drought stricken, and soon to suffer greatly from population growth. If other leaders in our administration continue the whitewash, the scarcity of knowledge and lack of conservation measures will cripple a western civilization built upon water.



Further east, the major problem is the drying up of our underground water resources.

In the state of Kansas today, many farmers that used to be able to pump plenty of water to irrigate their crops are discovering that the water underneath their land is now gone. The following is an excerpt from a recent article in the New York Times...

Vast stretches of Texas farmland lying over the aquifer no longer support irrigation. In west-central Kansas, up to a fifth of the irrigated farmland along a 100-mile swath of the aquifer has already gone dry. In many other places, there no longer is enough water to supply farmers’ peak needs during Kansas’ scorching summers.

And when the groundwater runs out, it is gone for good. Refilling the aquifer would require hundreds, if not thousands, of years of rains.

So what is going to happen to "the breadbasket of the world" as this underground water continues to dry up?

Most Americans have never even heard of the Ogallala Aquifer, but it is one of our most important natural resources. It is one of the largest sources of fresh water on the entire planet, and farmers use water from the Ogallala Aquifer to irrigate more than 15 million acres of crops each year. It covers more than 100,000 square miles and it sits underneath the states of Texas, New Mexico, Oklahoma, Colorado, Kansas, Nebraska, Wyoming and South Dakota.

Unfortunately, today it is being drained dry at a staggering rate. The following are a few statistics about this from one of my previous articles...

1. The Ogallala Aquifer is being drained at a rate of approximately 800 gallons per minute.

2. According to the U.S. Geological Survey, "a volume equivalent to two-thirds of the water in Lake Erie" has been permanently drained from the Ogallala Aquifer since 1940.

3. Decades ago, the Ogallala Aquifer had an average depth of approximately 240 feet, but today the average depth is just 80 feet. In some areas of Texas, the water is gone completely.

So exactly what do we plan to do once the water is gone?

We won't be able to grow as many crops and we will not be able to support such large cities in the Southwest.

If we have a few more summers of severe drought that are anything like last summer, we are going to be staring a major emergency in the face very rapidly.

If you live in the western half of the country, you might want to start making plans for the future, because our politicians sure are not.

http://theeconomiccollapseblog.com/archives/the-colorado-river-the-high-plains-aquifer-and-the-entire-western-half-of-the-u-s-are-rapidly-drying-up

Ponce
5th June 2013, 09:59 AM
Like I keep saying....."The future wars will be about water and not about oil"... "Learn Spanish and Chinese and BUY WATER STOCKS"...........a lot of water will be taken from point a to point be by trasport as is oil today will be using a lot of oil ... there will be new water line installed all over the place..........NY wastes 63% of its water because the water pipes are now over 100 years old and are broken in many places......farmers should have dedicated water drip line so that same will water the plants and not the unused ground.......price of your water at home will go up and more meters will be installed for the water that you use. Even if my water is for free I live like if the future is now and that way I can have a better idea as to what will happen...................of course I can do this only because I live alone.

First post of the day..........good morning to one and all.

V

steel_ag
5th June 2013, 11:00 AM
Like I keep saying....."The future wars will be about water and not about oil"... "Learn Spanish and Chinese and BUY WATER STOCKS"...........a lot of water will be taken from point a to point be by trasport as is oil today will be using a lot of oil ... there will be new water line installed all over the place..........NY wastes 63% of its water because the water pipes are now over 100 years old and are broken in many places......farmers should have dedicated water drip line so that same will water the plants and not the unused ground.......price of your water at home will go up and more meters will be installed for the water that you use. Even if my water is for free I live like if the future is now and that way I can have a better idea as to what will happen...................of course I can do this only because I live alone.

First post of the day..........good morning to one and all.

V

no weather modification, where are the best spots to be located for future fresh water? 1) in the US 2) in the.....

steel_ag
5th June 2013, 12:09 PM
http://www.seawatergreenhouse.com/process.html

Seawater is evaporated at the front of the greenhouse to create cool humid conditions inside. A proportion of the evaporated seawater is then condensed as fresh water that can be used to irrigate the crops. Excess freshwater created in the Seawater Greenhouse can be used to irrigate additional crops grown outside the greenhouse.

The air going into the greenhouse is first cooled and humidified by seawater, which trickles over the first evaporator. This provides good climate conditions for the crops. As the air leaves the growing area, it passes through the second evaporator over which seawater is flowing. This seawater has been heated by the sun in a network of pipes above the growing area, making the air much hotter and more humid. It then meets a series of vertical pipes through which cool seawater passes. When the hot humid air meets the cool surfaces, fresh water will condense as droplets that run down to the base where they can be collected.

The cool and humid conditions in the greenhouse enable crops to grow with very little water. When crops are not stressed by excessive transpiration, both the yield and the quality are higher.
The simplicity of the process imitates the hydrological cycle where seawater heated by the sun evaporates, cools down to form clouds, and returns to the earth as rain, fog or dew.

steel_ag
5th June 2013, 12:10 PM
http://www.greenhousemanagementonline.com/Author.aspx?AuthorID=5931

Worth its salt
Water

How Charlie Paton and Seawater Greenhouse are using seawater to create greenhouse solutions for the hottest and driest regions of the world.
December 11, 2012
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Over the past 30 years the number of greenhouses being built has increased steadily due to yields that are typically 10 to 100 times greater than yields achieved outside. Greenhouses also enable high-value crops to be grown out of season. However, despite this increase, there are many places around the world where hot and arid climates and a lack of fresh water make supporting a greenhouse operation very difficult and not very practical.

This didn’t stop Charlie Paton and Seawater Greenhouse Ltd., a designer of growing systems, from creating a greenhouse system that could operate in some of the hottest and driest climates on Earth. A seawater greenhouse provides a low-cost solution to year-round crop production by using seawater and sunlight.

“It’s an idea we have been playing with for a long time — over 20 years,” says Paton, Seawater Greenhouse founder and managing director. “It’s quite counterintuitive; seawater greenhouses in hot, arid places don’t really make sense on the face of it. Everybody knows you can’t use seawater to grow plants because the salt kills the plant. Everybody knows you don’t have hot houses in hot countries. It takes a bit of understanding to get over those objections.”

The seawater greenhouse system took Paton a lot of trial and error. His travel experiences are what inspired him to start toying with the idea.

“I used to spend a lot of time in my youth traveling around the Middle East and North Africa,” Paton says. “I was always perplexed by the fact that these countries — the Sahara Desert in North Africa and the Middle East — were generally surrounded by seawater, but were suffering to a greater or lesser extent from drought.”

Paton began looking for solutions that would make a greenhouse in these climates practical. He had a background in lighting and understood quite a bit about light, color, control, heat, infrared and ultraviolet. He used this knowledge to create solar stills, a simple way of distilling water using the heat of the sun to drive evaporation from humid soil and ambient air to cool a condenser film.

“I spent quite a lot of time trying to develop solar stills to turn seawater into fresh water,” he says. “I learned that I might get a solar still to make four liters of water a square meter of still area. I thought, ‘That’s quite good, four liters a day. How much can we irrigate with that?’”

As it turned out, Paton realized that in many of these hot and arid locations, evapotranspiration occurred at a higher rate than his stills produced fresh water.

“Then I thought, ‘Why not put the plants in the still and redesign the still to suit the plants?’” he says. “So that’s where the idea of the seawater greenhouse came from.”

To date, Seawater Greenhouse has built these unique greenhouse systems in Tenerife, Abu Dhabi, Oman and Australia. Paton says there are very few limitations to the greenhouses and many places that could benefit from them.


The process
The original concept for the seawater greenhouse came about through controlling light and separating it in such a way that you can use the maximum amount of available PAR, photosynthetic active radiation, for the crop cultivation, and use the rest of that energy for desalination.

“In simple terms it’s that photosynthesis is driven by light, but it’s only red light and blue light in the visible part of the spectrum that drives the synthesis,” Paton says. “The conflict is the more light you have for crop growth, the better. The more heat you have the worse. So if you can take the heat out of the light, in other words cool the light, then you can use that heat for some other purpose like distilling seawater.”

The process is as follows: The air going into the greenhouse is first cooled and humidified by seawater, which trickles over the first evaporator. As the air leaves the growing area, it passes through the second evaporator over which seawater is flowing. This seawater has been heated by the sun in a network of pipes above the growing area, making the air much hotter and more humid. It then meets a series of vertical pipes through which cool seawater passes. When the hot, humid air meets the cool surfaces, fresh water will condense as droplets run down to the base where they can be collected. The process imitates the water cycle where seawater heated by the sun evaporates, cools down to form clouds, and returns to the earth as rain, fog or dew.

The conditions inside the greenhouse are cooler than outside temperatures. This is significant because it creates cool, humid conditions in high light areas, which is ideal for plant growth.

“It very much depends on what the local conditions are; temperature, wind speed, wind direction, solar radiation and all those sorts of things,” Paton says. “What we do primarily is spend a lot of time analyzing the meteorological data and the climate conditions and then coming up with a design that is best suited to those conditions. It’s not a one-size-fits-all solution that you can parachute into place. We start from scratch using that accumulated knowledge and the data that we’ve generated to work out what’s the best design.”

The greenhouses are capable of growing a wide range of produce, herbs and flowers.
The company has done projects mainly in parts of Africa and the Middle East.

“You can grow crops like lettuce, tomato and cucumber using a fraction of the water that you’d use otherwise, and they grow well because the high humidity reduces stress,” he says. “In that sense, it’s quite different from the conventional high-tech Dutch greenhouse because the Dutch like to control everything to quite a precise degree with heating, cooling, venting and CO2. We don’t really do any of that. We rely on what the design of the greenhouse will achieve and then simply adjust airflow rate.”

Structurally a seawater greenhouse can be identical to any other greenhouse. The difference between conventional greenhouses and a seawater greenhouse is the use of an evaporator.

“The difference is we have a large area for an evaporator instead of a wall and we choose to make the evaporator as big as possible to take up the wall that’s facing into the wind,” Paton says. “On the opposite wall, we either have fans or we don’t depending on the strength and relativity of the prevailing wind. If it’s very hot and very dry, evapotranspiration might be five, 10 or 15 liters a square meter a day, which is quite high. Even if you irrigate at those rates, if the sun is very strong and the wind is very dry and strong and the temperatures are high, it will be very difficult to grow temper-type crops even with an abundance of water. So not only do we enable crops to grow in places that they wouldn’t grow otherwise, we also enable them to grow using very little water.”


Adoption
Paton says that seawater greenhouses are still in the early stages of being recognized as a widespread solution. However, the evidence to support them in these hot and arid climates is clear.

“As a topic we aren’t quite on the map,” Paton says. “The people who understand greenhouse horticulture tend to be dismissive of it because it is so different from a conventional Dutch greenhouse where people get fixated on CO2 control and humidity and temperature regulation within a closed environment.”

Closing a greenhouse stops pests from getting in, but also stops CO2 from coming in, forcing you to inject CO2. When you inject CO2, you’re burning gas and producing heat. You’ve got to store the heat somewhere and use it later, and you don’t want to open vents because then you lose the CO2.

Benefits

Freshwater production: The fresh water produced is pure and distilled, with no need for chemical treatment.

No fossil-fuel requirements: Unlike traditional greenhouses, Seawater Greenhouse systems use only seawater and sunlight to control the growing environments, with equal effectiveness.

Pesticide free: Seawater evaporators have a biocidal and scrubbing effect on the ventilation airflow, reducing or eliminating pesticide needs.

Land: Technology allows the development of land normally considered unsuitable for agriculture.

Cost-effective: Commercial-
grade crop yields, coupled with much lower capital and operating costs, result in enhanced operator economics.

Salt and mineral production: Salt gained in the process can be sold and other minerals used as crop nutrients.

Import substitution and jobs: Most world arid regions are net importers of horticultural produce. By employing Seawater Greenhouse systems on a large scale these regions could see rises in local green employment as well as reductions in costs by substituting expensive imports with high-quality, locally produced Seawater Greenhouse crops.

“There are lots of problems that there are some wonderfully elegant, brilliant solutions to, but that kind of thinking is the opposite of what we do,” he says. “It’s vented. Air is coming through all the time. We don’t have any problem with CO2 depletion because we have an air change every minute, so the CO2 levels are always high. We don’t have a problem with pests and disease because the saturated salt evaporator is toxic to anything in the air. It’s a very effective method of scrubbing airborne pathogens, disease and contaminants out of the air. So we have a very clean, sterile airflow coming into the greenhouse. Intellectually and practically, it is quite a different approach. The result is the same, but the means of achievement are different.”

Most recently, the company built a system in Australia, which is the company’s first commercial-scale greenhouse.

“We’re getting growth rates that are equivalent to top-end, high-tech, best-practice Dutch cultivation,” he says. “I think we can safely say that in the right place, it is much cheaper to cool a greenhouse with seawater than it is to heat and light one artificially. Most greenhouses in the world are in cool temperate climates. The greenhouses that are in hot, arid places tend not to be used in the summer. They tend to be only used in the winter months. In places like Abu Dhabi and the hottest countries on earth, we can grow tomatoes and cucumbers all year round.”

Seawater greenhouses can be small or large operations and there are next to no limitations to the greenhouses from a design standpoint.

“There are no limitations, but for practical reasons you want to be close to seawater because you don’t want to be constructing kilometers of pipe for one little greenhouse,” he says. “At the same time, there is a lot of merit in the idea of running seawater maybe 50, 100 or 200 miles into the desert region in order to establish agriculture there as long as you don’t contaminate the ground with salt.”

There are large areas of desert where this would be applicable. The major limitation is the cost of pumping, which is related to the height above sea level that you pump to.

“There are large areas in North Africa and the Middle East that are either at sea level or below sea level,” he says. “In the future, especially in the Middle East and North Africa to a large extent, bringing seawater inland will be a very good solution to overcoming food security.”

While Seawater Greenhouse has done projects mainly in parts of Africa and the Middle East, the company has been exploring the idea of expanding its reach and finding additional locations that would greatly benefit from seawater greenhouses. Places such as Yemen, Somalia and Mexico are areas that Paton is optimistic about as future locations the company could break into.

“We have interest in a lot of the countries that are on the edge of being what are called ‘failed states,’ like Yemen and Somalia, and quite a few parts of North and South Africa where drought is a real problem,” he says. “Mexico and the Sonora Desert would be ideal locations,” he says. “We have had a lot of interest from there. That is potentially the best place for us because Mexico does have very good growers. Mexico can overcome all those problems I’ve talked about; politics, culture and the know-how. There are huge areas of desert in some places next to the coast, and at the same time there are other places where there are farmers who are really stressed through shortage of water and drought. Here is a solution that can overcome all of that.”

steel_ag
5th June 2013, 12:11 PM
http://ourworld.unu.edu/en/growing-food-in-the-desert-is-this-the-solution-to-the-worlds-food-crisis/

Uncle Salty
5th June 2013, 12:28 PM
This sucks for thirsty people.

Ponce
5th June 2013, 12:36 PM
Steel? that was great, love it........I already experimented in making my own solar water provider.....I made a box 4X8 made it water proof, situate it at a 3 degrees angle, in the sun, and put a 4X8 clear glass over it......you can put anything that has moist in it, like urine, and when it condences and run down the glass cover I was getting pure water.........everyone here should start experimenting right now, my next project is a solar pond.

V

EE_
5th June 2013, 05:16 PM
The River That Created The Grand Canyon Is Going Dry

http://www.businessinsider.com/rafting-the-endangered-colorado-river-2013-5?op=1#ixzz2VO1TYHWe

Ponce
5th June 2013, 06:47 PM
Wowwwwww EE, that was a real good find...and it shows what a bleak future awaits those who are not ready to recieve it.

V

Horn
5th June 2013, 07:05 PM
Scientists tell us that the 20th century was the wettest century in the western half of the country in 1000 years, and now things appear to be reverting to their normal historical patterns.

In that case, The next century will probably be one of the wettest the western U.S. has ever seen.

The Hoover Dam will probably need to receive a height extension.

Tropical Storms are already in the East, so Summer is over there.

steel_ag
18th June 2013, 02:04 PM
If you believe what NASA says... (look at the images on the website too)

http://earthobservatory.nasa.gov/Features/GRACEGroundwater/page4.php


The Weight of Water

“GRACE gives you variations in the total water stored on and in the land,” confirms Rodell. “But in order to figure out whether those changes are happening in the ground water, soil moisture, snow, or surface water, we need auxiliary information. We use physics equations and computer models to figure out what happens to the water after it hits the land as rain or snow.”

In some parts of the world, particularly the tropics, most of the water is stored on the surface in lakes, rivers, and wetlands. In cold regions, water mostly accumulates as snow and ice. In the temperate middle latitudes (including most of the United States), soils and aquifers are the major stores of water.

In the top layer of the soil, the spaces between the soil grains are filled with air and water, explains Famiglietti. Gravity pulls the water down into the Earth, so as you go progressively deeper in the soil, the pore spaces become more and more full. When water fills every pore, the soil is saturated.
Maps of surface soil moisture, root zone soil mositure, and ground water storage for the Untied States in August, 2012.

Scientists combine GRACE data with ground-based measurements to map water at the surface, in the root zone, and stored in ground water. These maps compare conditions during the week of August 20, 2012, to the long-term average from 1948 to the present. For example, dark red regions represent dry conditions that should occur only 2 percent of the time (once every 50 years). (Maps by Chris Poulsen, National Drought Mitigation Center at the University of Nebraska-Lincoln, based on data from Matt Rodell, NASA Goddard Space Flight Center, and the GRACE science team.)

This saturation point is the top of the “water table,” where groundwater is stored. The distinction between soil moisture (the unsaturated zone) and groundwater (the saturated zone) is important because groundwater flows easily enough for people to tap with wells and pumps. It is much harder to get water from unsaturated soil.

One way Rodell distinguishes between snow, surface water, soil moisture, and groundwater is a process of elimination. He also assembles data on how much rain or snow has fallen at each location, the soil type, amount of sunlight, wind speed, and other meteorological variables, and combines them within a land surface model. This computer model uses hundreds of equations to determine the fate of energy from the Sun and of water after that energy hits the land surface. The results include maps of groundwater, soil moisture, and evaporation, and how they all vary over time.

JohnQPublic
18th June 2013, 02:17 PM
The pics. California looks pretty good overall, except for groundwater storage. The midwest looks pretty dry.

5026

Horn
19th June 2013, 08:41 AM
The pics. California looks pretty good overall, except for groundwater storage. The midwest looks pretty dry.



When are those from? I was just back east and the ground was over saturated.