Archive for November, 2017

Just So We Can Survive, We Must Change….

November 28, 2017

Rudyard Kipling’s Just So Stories charmed Victorian readers with tales such as how the leopard got his spots. In re-reading this childhood classic, I was struck with the idea of Kipling’s whimsy being a parable for climate change adaptation and coping techniques. So…

Adaptation in the Mara River Basin paired with Kipling’s Words

“There was sand and sandy-coloured rock and ‘sclusively tufts of sandy-yellowish grass. The Giraffe and the Zebra and the Eland and the Koodoo and the Hartebeest lived there; and they were ‘sclusively sand-yellow-brownish all over, but the Leopard, he was the ‘sclusivest sandiest-yellowest-brownest of them all.

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An Ethiopian with bows and arrows (a ‘sclusively greyish-brownish-yellowish man he was then), lived on the High Veldt with the Leopard, and the two used to hunt together – the Ethiopian with his bows and arrows, and the Leopard ‘sclusively with his teeth and claws.

East Africa, Kenya, Maasai (aka Masai) Mara NR, Rekero

… The Giraffe and the Eland and the Koodoo and the Quagga and all the rest of them… learned to avoid anything that looked like a Leopard or an Ethiopian and bit by bit… they went away…. They scuttled for days and days and days till they came to a great forest, ‘sclusively full of trees and bushes and stripy,speckly, patchy-blatchy shadows, and there they hid….

Then [the Ethiopian and the leopard] met Baviaan, — the dog-headed, barking Baboon, who is Quite the Wisest Animal in All South Africa. Said Leopard to Baviaan (and it was a very hot day), Where has all the game gone?”

And Baviaan winked. He knew….

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Then said Baviaan, “The aboriginal Fauna has joined the aboriginal Flora because it was high time for a change, and my advice to you Ethiopian, is to change as soon as you can.” ….

[The Ethiopian then said,] “The long and the little of it is that we don’t match our backgrounds. I’m going to take Baviaan’s advice He told me I ought to change, and as I’ve nothing to change except my skin. I’m going to change that … to a nice working blackish-brownish colour with a little purple in it, and touches of slaty-blue. It will be the very thing for hiding in hollows and behind trees….”

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“Umm…, I’ll take spots, then, said the Leopard…. The Ethiopian put his five fingers close together (there was plenty of black left on his new skin still) and pressed them all over the Leopard…   “Now you are a beauty! Said the Ethiopian. “You can lie out on the bare ground and look like a heap of pebbles. You can lie out on the naked rocks and look like a piece of pudding-stone. You can lie out on a leafy branch and look like sunshine sifting through the leaves, and you can lie aright across the centre of a path and look like nothing in particular. Think of that and purr!”

K-LEO-101

So they went away and lived happily ever afterward, Best Beloved. That is all.”

 

All photos © Alison M. Jones.

Seeking Nile River Origins via its Tributaries

November 21, 2017

By Joannah Otis for No Water No Life

This is the third blog on the Nile River in Egypt by NWNL Researcher Joannah Otis, sophomore at Georgetown University. This essay addresses the sources of the Nile  – lakes, tributaries, and a great swamp. [NWNL has completed documentary expeditions to the White and Blue Nile Rivers, but due to current challenges for photojournalists in Egypt and Sudan, NWNL is using literary and online resources to investigate the main stem of the Nile.]

For centuries, the debate over the source of the Nile River incited explorations and evoked endless questions. The Ancient Egyptians believed that the Nile originated from an underground sea or spring, but never ventured upriver to confirm their theory.  Instead they put their faith in Hapi, god of the Nile River.1 [See NWNL Blog “Finding Hapi-ness on the Nile,” .]

1000px-River_Nile_map.svgMap of the Nile River and its sources. (Attribution: Hel-Hama)

Interest in the elusive source arose again c. 440 BCE when Herodotus wrote in The Histories of the “fountains of the Nile.”  He asserted that melting snow from upstream mountains flooded the headwaters to create the seasonal inundation.2  It was not until 1768 when James Bruce began searching for and ultimately found the source of the Blue Nile at Lake Tana in the Ethiopian Highlands that some light was shed on the issue.  

In 1874, Henry Morton Stanley confirmed an earlier theory by John Hanning Speke that Lake Victoria was the source of the White Nile. These explorers and many others were often sponsored by the Royal Geographical Society in England and driven by their own hopes for fame.3 Today’s satellite technology and advanced resources have enabled us to positively identify Lake Tana as the source of the Blue Nile and Lake Victoria as the source of the White Nile. These two main rivers meet in Khartoum, Egypt to form the great Nile River.

ET Bar 0125D.JPGTissiat Falls, from L. Tana, source  of the Blue Nile.  (© Alison M. Jones)

The Blue Nile is the source of about 85% of the Nile’s water.4 Beginning in the Ethiopian Highlands where a plateau of basalt lava receives rain from seasonal monsoons from May to October, the Blue Nile stretches over 900 miles into Sudan. This origin point lies 2,500 meters above sea level.  Beginning its northbound route, this river flows through Lake Tana, as well as the Blue Nile Gorge.5 Lake Tana is a shallow body of water measuring 1,400 square miles, surrounded by the Amhara tribe’s ancestral lands.6 The Blue Nile Gorge, lying on the edge of Africa’s Great Rift Valley, guides the Blue Nile for 370 miles into the middle of the Ethiopian Highlands.7

While the White Nile contributes only 15% of the Nile River’s water, it is still an important ecological and hydrological presence.8 Originating in Lake Victoria and fed by the Ruvubu, Nyabarongo, Mara and other rivers, the White Nile flows through Lake Kyoga, Lake Albert, and the Sudd.9 The White Nile flows through much of the Albertine Rift Region.  It spans from the northernmost point of Uganda’s Lake Albert to the southern tip of Lake Tanganyika.10  This rift is home to a plethora of diverse wildlife, including 5,793 plant species, which brings profitable tourism to Uganda. Between Juba, Ethiopia and Khartoum, the river in Sudan drops just 75 meters. To the east and west of the river, the floodplains become savannah and then desert as lush growth that adorns the Nile’s banks disappears.11

White_Nile_Bridge,_Omdurman_to_Khartoum,_SudanThe White Nile Bridge in Sudan. (Attribution: David Stanley)

Just south of Khartoum, lies the vast Sudd, covering most of  South Sudan. Meaning ‘obstacle’ in Arabic. the Sudd is one of the world’s largest wetlands and the Nile Basin’s largest freshwater wetland.  The Sudd is a 12,355 square-mile practically impenetrable swamp of complex channels and lagoons –  an explorer’s challenge.  Fed by heavy rainfall from April to October,12 it provides floodwater storage and water habitat for 350 plant species, 470 migratory bird species, and 100 fish species.  Antelope migrations from the surrounding arid Sahel retreat annually to the Sudd in astonishing numbers.  Around 1.2 million white-eared kob, Nile Lechwe, and tiang, as well as wild dogs, crocodiles and hippos in the Sudd are best viewed by air.   The Sudd is also the home to pastoralist Nuer, Dinka and Shilluk tribes, Nilotic peoples who practice subsistence semi-nomadic cattle breeding and some grain farming.

Jones_040826_ET_0160Lake Tana, Ethiopia’s source of the Blue Nile. (© Alison M. Jones)

Ecosystems within the swamp include open waters with submerged vegetation, floodplain shrubland, surface-floating fringe vegetation, seasonally flooded grassland and woodland.13 Since most of the water that enters the Sudd evaporates due to high temperatures in Sudan, the White Nile leaves this swamp with half the power with which it enters.14  Since the 1930’s, there’ve been proposals to build a canal, today referred to as the Jonglei Canal Project, east out of the Sudd directly to the main stem of the Nile River.  It is said such a canal could increase Egypt’s water supply by five to seven percent. While Sudan and Egypt would benefit, South Sudan would see its fisheries die, grazing lands dry out and groundwater lowered.

Uganda:Lake Victoria, Uganda’s source of the White Nile. (© Alison M. Jones)

After years of searching, the sources of the Blue and White Nile River are no longer mysteries. The number of plant and animal species who depend on them are staggering, but they also serve as important lifelines for the humans living on their banks. From water for irrigation to water for domestic use, the Nile River tributaries are vital to North African survival of all species, including humans. It would be a human and environmental tragedy if these Nile tributaries or the great Sudd were drained and disappeared, as has Africa’s Lake Chad. Thus, these waterways deserve the respect and care owed to such treasured and vital resources.

Sources

1 Holmes, Martha; Maxwell, Gavin; Scoones, Tim. Nile. BBC Books. 2004.
2Bangs, Richard; Scaturro, Pasquale. Mystery of the Nile. G.P. Putnam’s Sons. New York, New York. 2005.
3 Turnbull, March. “The Great Race for the Rivers of Africa.” Africa Geographic. May 2004.
4 “Nile River Facts.” Africa Facts. Web.
5“History of the Nile.” Penn State College of Earth and Mineral Sciences. Web.
6Bangs, Richard; Scaturro, Pasquale. Mystery of the Nile. G.P. Putnam’s Sons. New York, New York. 2005.
7Holmes, Martha; Maxwell, Gavin; Scoones, Tim. Nile. BBC Books. 2004.
8“Nile River Facts.” Africa Facts. Web. September 27, 2017.
9Caputo, Robert. “Journey up the Nile.” National Geographic. May 1985.
10“The Environmental Resources of the Nile Basin.” p 57-98. Web.
11Pavan, Aldo. The Nile From the Mountains to the Mediterranean. Thames and Hudson Ltd. 2006.
12 Holmes, Martha; Maxwell, Gavin; Scoones, Tim. Nile. BBC Books. 2004.
13“The Environmental Resources of the Nile Basin.” p 57-98. Web.
14Holmes, Martha; Maxwell, Gavin; Scoones, Tim. Nile. BBC Books. 2004.

Dr. Alan Rice Reviews “The Waste Water Gardener”, by Dr. Mark Nelson

November 14, 2017

 

Reviewer’s Bio: Dr Alan Rice, (Doctor of Engineering Science) has conducted research in a number of fields, directing attention to environmental issues. He draws on experience from extensive global travel, having spent significant time in many countries.  

Information about Dr. Mark Nelson’s “The Waste Water Gardener”

NWNL Director’s Note: As one of 8 pioneers with Biosphere 2, Nelson saw that proper re-use of human waste could meet many goals needed for the survival of humans and watershed ecosystems. Having tasted “black water,” recycled from raw sewage, I can say it is great! So let’s get over the Yuck Factor.  

 

I pray this book is followed up with a text for civil/environmental engineering courses offered globally, and also made available on the web. Two decades ago, drought-besieged Texas towns had to resort to raw sewage to reclaim drinking water. From ancient times, so-called “more primitive” cultures recognized the importance of returning to the earth (in the form of fertilizer) that which we take from it. This is the theme embedded in Nelson’s book. And, incidentally money may be made with it!

 

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Most modern practices deplete the soils of their nutrients, leaving them barren. However, with 10% of its land arable, China has supported great populations by recycling “night soil,” a euphemism for human feces. Nelson also espouses recycling human feces. Which brings us to one of the charms of Dr. Nelson’s book. He doesn’t call it ‘feces’. He drops us into the ‘shit’ immediately. He calls a shit a shit and doesn’t try to hide the stuff under sobriquets as “B.M.” or “number two.”

The fastidious pretenses of many North Americans who’ve turned up their noses to recycling shit, squelched Chicago’s early hopes of providing clean, usable fertilizer from their own sewage treatment plants. Perhaps that “noses-up” is a holdover from the 1894 horse manure crisis in New York City. The city was “saved” with the advent of the horseless carriage, which brought with it more deadly pollutants. In any event, in a scholarly flair for his subject, Nelson employs the Anglo-Saxon descriptor deeply embedded in the English language since 500 BCE – and very likely long before: shit. This usage gives a playful and amusing lilt to the book, lightening the somber nature of the material it addresses.

US agriculture prefers guano instead to replace lost nutrients. Guano? Bird shit is held in higher esteem than people poop? But instead of either, the US replaces nutrients with manufactured phosphates, their excess being carried off to foul the seas and polluting every tributary along the way.

MA-MON-101Outhouse in Montague, Massachusettes (2000)

 

Nelson’s tome brings ashore the mission of the Hudson River sloop Clearwater, which set out to clear “The North River” of swarming populations of “Hudson River brown trout” (another euphemism) that spawned in the upper reaches of Manhattan’s sewers to debouch into the river – raw and untreated – at the 125th Street outfall. That mission was successful. We can now swim the lower Hudson.

Nelson’s manual guides the way to similar success on land. On the Clearwater I encountered my second “composting toilet.” Its odorless contents didn’t go into the Hudson, but to organic farming elsewhere. My first encounter with something similar was on a Wyoming ranch that ran buffalo. There, the urine, sterile when first leaving the body, goes into one container. The feces – oops, the shit – goes into the other, which provides even more beneficial results. No water is wasted either way, as these commodes are not flushed. That avoids the extremes forced upon Texas towns. In some places, water is now more expensive than whiskey.

Jones_130128_K_3688Outhouse in Kangatosa on Lake Turkana in Kenya (2013)

 

The innovative, pioneering spirit that typified the US in earlier years has moved offshore. Composting toilets are the new fashion in India where Indian Railways are retrofitting 43,000 coaches with them. The “proceeds” go to organic gardens. A number of so-called “Third World” countries are taking similar approaches: Burkina Faso, Georgia, The Philippines, Haiti, Cambodia, Rwanda…. It’s a long list.

Nelson offers engineering solutions for whole village programs, hotels, recreation areas – this list is long also. Their sewage – AKA, “effluent” – is released into an outside garden to be taken up by fruit trees, vegetables and flowers, which absorb that sewage. Giving back in return! What flows forth from the discharge end of the garden is clear, clean, safe water!

If sainthoods were given for saving the planet, Dr. Nelson’s canonization would be assured. I do hope one day to see luxuriant front lawns (waste water gardens need not be that big!), signaling the abandonment of sewer lines and transport of dangerous chlorine to expensive treatment centers. Interesting that the US never adopted the solution employed elsewhere: treat the water with ozone generated on site. Far cheaper, far safer.

Jones_110913_WA_2887-2At the WET Museum in Olympia, Washington (2011)

 

All photos © Alison M. Jones.

Aswan High Dam Leaves an Environmental Legacy

November 7, 2017

by Joannah Otis for No Water No Life

This is the second our blog series on “The Nile River in Egypt” by NWNL Researcher Joannah Otis, sophomore at Georgetown University. Following her blog “Finding Hapi-ness on the Nile,” this essay addresses perhaps the greatest elements of change created thus far by humans along the Nile. [NWNL has completed documentary expeditions to the White and Blue Nile Rivers, but due to current challenges for photojournalists visiting Egypt and Sudan, NWNL is using literary and online resources to investigate the availability, quality and usage of the Nile in those regions.]

Aswan_DamAswan Dam on the Nile River in Aswan, Egypt

Background on Aswan High Dam

The Nile River snakes south to north for 4,160 miles through ten North African countries until it reaches the Mediterranean Ocean.1 Its path is interrupted only by the great Aswan High Dam, which has brought both good and bad to the Egyptian people. Towering 364 feet tall and stretching 12,565 feet along its crest, the Aswan High Dam is impressive.2 This dam was opened in 1971 after a decade of construction and seeking funds from the Soviet Union.3 Its transboundary reservoir, Lake Nasser, which backs up into Sudan for 300 miles, holds nearly two years’ worth of water from the Nile River.

Benefits of the Aswan High Dam & Lake Nasser

The High Dam, replacing a 1902 Low Dam, annually generates more than 10 billion kilowatt hours of electricity, facilitating Egypt’s path to industrialization. This new dam also marked a major shift in Egypt’s agricultural prospects. Previously, Nile River Basin farmers were forced to depend on fickle seasonal flooding, which could bring appropriate levels of water one year and often completely washed away soil the next. Such unpredictability made it hard to grow a reliable crop; and the Nile’s single flooding season precluded farmers from having more than one harvest per year.

Lake Nasser’s surplus of water has well served the irrigation needs of Egypt and Sudan, since water availability is especially critical, given Egypt’s growing population and increasing water needs. (NB:  NWNL is studying these trends that portend dire water scarcity in the near future.) The Aswan Dam now allows for two to three crop cycles annually.  Nearby aquifers are inundated by increased amounts of water due to year long, rather than seasonal irrigation.  Water levels are carefully monitored and extra water is saved for times of drought. There has been huge economic benefit to the fact that the dams has allowed Egypt to triple the output of its most important and profitable crops, wheat and cotton.5  

Lake-nasserLake Nasser in Egypt.

Thus, the Aswan High Dam created a new future of irrigation water, flood control and electricity – but came with disconcerting drawbacks. Its story and continued influence on the Nile River illustrate how human ingenuity can inadvertently take a toll on the environments and ecosystems we so rely on.  The degradation of Nile ecosystems and the influx of increasing chemical runoff are reminders of the negative impacts that infrastructure, intended to improve quality of life, can have on nearby environments and habitats for all species, including humans.

Consequences of the Aswan High Dam & Lake Nasser

While Lake Nasser reservoir has allowed for controlled downstream flows into northern Egypt, that backlog of Nile water forced the relocation about 100,000 people to other lands in Sudan and Egypt.6 Abu Simbel Temple and 22 historical structures fortunately were moved under UNESCO’s watchful eye, yet Buhen Fort, the Fadrus Cemetery and other archeological sites (whose relocation would have been too costly) were submerged.

Stagnant waters in Lake Nasser have threatened the health of people using or residing near the Nile River waters. Downstream, the dam promotes the presence of schistosomiasis, a parasitic disease also known as bilharzia or “snail fever.” Schistosomiasis kills more than 200,000 Africans annually; and 20 million sufferers develop disfiguring disabilities from complications, kidney and liver diseases, and bladder cancer.

Egyptian_harvest.jpgTomb Painting of Peasants Harvesting Papyrus

Seasonal flooding once brought thick layers of dark silt to farms, which farmers used a natural fertilizer. Unfortunately, the Aswan High Dam almost completely blocks the movement of nutrient-rich sediment downstream. (NB:  NWNL has seen similar impacts of Ethiopia’s new Gibe Dams, ending 6,000 years of flood-recession agriculture practiced by pastoralists in the Lower Omo River Basin.) As rich Upper Nile sediments collected behind the dam, Egyptian farmers resorted to toxic chemical fertilizers that drain into the Nile. These pollutants can cause liver disease and renal failure in humans.7 

Farming phosphates running into the river increase algae growth. Algae blooms, elicited by excess nutrients (eutrophication), produce cyanotoxins, which affect the health of fish and may poison humans.At the same time, fish populations no longer benefit from nutrients that used to be in upstream Nile sediments. Aquatic species in the Mediterranean Sea near the Nile Delta have suffered similarly from decreased natural nutrients and increased chemicals.9

Riverbanks also suffer from a lack of replenishing sediments as their erosion continues unchecked.  Prior to the dam’s construction, the average suspended silt load was 3,000 parts per million (ppm). Post-construction silt levels have declined to 50 ppm.10 Further downstream, the Nile Delta suffers from a lack of silt replenishment. [NB:  NWNL has documented parallel deltaic losses and damage in the U. S., as  levees along the Mississippi River withhold sediment that used to rebuild storm erosion in the Mississippi Delta.]

Silt-free water along with a lower current velocity and steady water levels have enabled invasive aquatic weeds to infest the Nile River and its irrigation canals. Large volumes of aquatic weeds, water hyacinths in particular, create stagnant water conditions, impair water flow, provide breeding grounds for malaria-carrying mosquitoes and prevent the passage of boats whose propellers become clogged with invasive weeds.  Prior to the dam’s construction, these weeds were unable to flourish due to the Nile’s varying water levels and the force of its flow.11

Eichhornia_crassipes_C.jpgWater Hyacinth  (Credit: Wouter Hagens)

Erosion in the Nile Delta is especially threatening because it has led to saltwater intrusion.   (NB: Again, this is another issue also occurring in the Mississippi River Delta.)  Increased groundwater salinity from the encroaching Mediterranean Sea is decreasing cotton and rice yields.12 Additionally, fertilizers have further heightened saline levels.13

Beyond Aswan:  Footnote by NWNL Director Alison Jones

In 2009, Egypt was the most populous, agricultural and industrial country in the Nile Basin.14 The Aswan Dam has been a major factor in this march by Egypt to progress and prosperity.  However, just as the Aswan Dam came with a price – so will the upstream Grand Renaissance Dam, now under construction in Ethiopia on the Blue Nile River.  It is likely the impacts of this new Ethiopian dam – the largest ever on the African continent – will be even more consequential to Egypt than those of the Aswan High Dam.  It seems a new chapter is about to be written regarding settlement of transboundary conflicts spawned from disputes over dam impacts and upstream-downstream water rights.

Sources

1“Nile River Facts.” Africa Facts. Web. 2017
2Caputo, Robert. “Journey up the Nile.” National Geographic. May 1985. p 602
3Caputo, Robert. “Journey up the Nile.” National Geographic. May 1985. p 602
4Caputo, Robert. “Journey up the Nile.” National Geographic. May 1985. p 600
5Biswas, Asit K.; Tortajada, Cecilia. “Impacts of the High Aswan Dam.” Third World Centre for Water Management. 2012. p 389
6Caputo, Robert. “Journey up the Nile.” National Geographic. May 1985. p 602
7Theroux, Peter. “The Imperiled.” National Geographic Magazine. January 1997.
8El-Sheekh M. “River Nile Pollutants and Their Effect on Life Forms and Water Quality,” in “The Nile.” (Dumont H.J, Monographiae Biologicae, Vol 89. Springer, Dordrecht)
9Biswas, Asit K.; Tortajada, Cecilia. “Impacts of the High Aswan Dam.” Third World Centre for Water Management. P 389. 2012.
10Biswas, Asit K.; Tortajada, Cecilia. “Impacts of the High Aswan Dam.” Third World Centre for Water Management. P 385. 2012.
11El-Shinnawy, Ibrahim A.; Abdel-Meguid, Mohamed; Nour Eldin, Mohamed M.; Bakry, Mohamed F. “Impact of Aswan High Dam on the Aquatic Weed Ecosystem.” Cairo University. September 2000. p 535-538.
12Theroux, Peter. “The Imperiled.” National Geographic Magazine. January 1997.
13World Wildlife Foundation. “Nile Delta flooded savanna.” Web. 2017.
14El-Sheekh M. “River Nile Pollutants and Their Effect on Life Forms and Water Quality,” in “The Nile.” (Dumont H.J, Monographiae Biologicae, Vol 89. Springer, Dordrecht)
All photos used based on fair use of Creative Commons and Public Domain.

Oh, dam!

November 1, 2017

What Is A Dam? A dam is a structure, often quite large, built across a river to retain its flow of water in a reservoir for various purposes, most commonly hydropower.  In the U.S. there are over 90,000 dams over 6 feet tall, according to American Rivers.  In 2015 half of Earth’s major rivers contained around 57,000 large dams, according to International Rivers.  Dams are complicated. This blog presents a look at some of the benefits, consequences and impacts of dams, along with NWNL photographs of  North American and African dams in our case-study  watersheds.

BC: Waneta, Columbia River Basin, Waneta Dam on Pend d'Oreille RiverDanger sign at the Waneta Dam in the Columbia River Basin (2007)
Jones_111022_LA_2865Atchafalaya Old River Low Sill Control Structure, Louisiana (2011)

The slowing or diversion of river flows caused by dams – and related “control structures” – can have severe environmental impacts. Many species that reside in rivers rely on a steady flow for migration, spawning and healthy habitats. Altered river flows can disorient migrating fish and disrupt reproduction cycles needing natural seasonal flows.

US: Washington, Columbia River Basin, aerial views of Chief Joseph Dam
Jones_070622_WA_4119Aerial views of Chief Joseph Dam in the Columbia River Basin (2007)

The introduction of a dam into a river creates a reservoir by halting a river’s flow. This can severely impact the quality of water. Still water can cause water temperatures to increase. Resulting abnormal temperatures can negatively affect species; cause algae blooms; and decrease oxygen levels.

Jones_070628_OR_5171_MJuvenile fish bypass at the McNary Dam in the Columbia River Basin (2007)
Ethiopia: aerial of Omo River, construction site of Gibe Dam IIIAerial view of the construction site of Gibe III Dam in the Omo River (2007)

Bryan Jones, featured in Patagonia’s documentary “Dam Nation,” discussed today’s situation with four aging dams on the Lower Snake River (authorized in 1945) in his 2014 NWNL Interview:  “We used science then available to conquer and divide our river systems with dams. But today we can look at them and say, ‘Well-intentioned, but it didn’t really work out the way we would’ve liked it to.'”  Dams that may have been beneficial at one point in history must be constantly reassessed and taken down when necessary to restore river and riparian ecosystems and species. Some compare dams to humans, since they too have a limited life span of about 70-100 years.

Jones_100413_UG_9603Small dam across the White Nile River in Uganda (2010)
East AFrica: Uganda, JingaConstruction of the Bujagali Dam on the White Nile River in Uganda (2010)

There are well-intended reasons to build dams.  In the US, the Federal Emergency Management Agency (FEMA) has listed the values of dams on their website.  Those benefits  include recreation, flood control, water storage, electrical generation and debris control. These benefits are explained on the FEMA website.

USA: Alabama, Tennessee River Basin, Guntersville Dam (TVA)Danger sign at the Guntersville Dam, Tennessee River Basin (2013)
Jones_150817_CA_5888Parker Dam (a hydrodam) on the Colorado River, Southern California (2015)

Between 1998 and 2000, the World Commission on Dams (WCD) established the most comprehensive guidelines for dam building, reviewing 1,000 dams in 79 countries in two years. Their framework  for decision-making is based on recognizing rights of all interested parties and assessing risks.  Later, the European Union adopted this framework, stating that carbon credits from large dams can only be sold on the European market if the project complies with the WCD framework.

Many conflicts swirl around the impacts, longevity and usefulness of dams.  NWNL continues to study dam benefits versus their impacts, including removal of indigenous residents in order to establish reservoirs;  disruption of the downstream water rights and needs of people, species and ecosystems; and relative efficiencies of hydropower versus solar and wind.  Dam-building creates consequences.  Native Americans studied risks of their decisions for seven generations.  After the Fukushima tsunami caused the release of radioactive material, Japanese novelist Kazumi Saeki wrote:  “People have acquired a desire for technology that surpasses human comprehension.  Yet the bill that has come due for that desire is all too dear.”

Sources and resources for more information:

American Rivers, How Dams Damage Rivers

International Rivers, Environmental Impacts of Dams

International Rivers, Problems with Big Dams

International Rivers, The World Commission on Dams Framework – A Brief Introduction

FEMA, Benefits of Dams

National Hydropower Association, Why Hydro

NWNL, Interview with Bryan L. Jones

New York Times, Kazumi Saeki, In Japan, No Time Yet for Grief

All photos © Alison M. Jones.

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