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The Indus Delta Goes Thirsty

By Shahid Husain*
Karachi, Pakistan

20/08/2003

"India is named for the Indus River, along whose fecund banks a great urban civilization flourished more than four thousand years ago."

American historian, Stanley Wolpert1

Today, the Indus river is almost completely devoid of freshwater

"Fed by the glaciers of southern Tibet, the Indus flows a thousands miles north and west through Kashmir before it veers sharply to the south, cutting its gorge through Nanga Parbat, down the Malakand Pass, which was to become the historic highroad into India of invading armies from the West."2

The Indus traverses a journey of 3,000 km before it drains in the Arabian Sea. It has many fascinating names. "In Tibet it is 'the River issuing from the mouth of the Lion.' In the gutter between the Karakoram and the Himalyas people call it 'The Eastern River,' because it comes to them from the sunrise. Breaking out of the mountains, already rich in tributaries and known to be shortly in receipt of others, it is 'Abasin', the Father of Rivers. In ancient times it was the ‘Sindhu’, meaning divider, keeper or defender; this name was gradually changed to Indus and was given to the whole subcontinent...In its lower reaches, where it spreads widely over the sands, the river was once known as the 'Ocean' and, at its delta, as the 'Freshwater Sea."3

But the majestic river, which is the lifeline of Pakistan's essentially agrarian economy, is threatened by the myopic policies of successive rulers and the building of barrages and large dams upstream. The Indus Delta in particular, which was the most fertile land in the past, is dying a slow death because it has been deprived of the freshwater that nurtured its rich mangrove forests, fisheries, paddy rice and orchards.

The Indus Delta, covering a total area of 60,000 hectares lies in the southern part of Pakistan bordering the Arabian Sea. India is situated to its east. According to the World Wide Fund for Nature (WWF)-Pakistan: "The creek of the Delta supports a plethora of marine species. Hilsa ilisha, locally known as Palla fish, swim up from the Arabian Sea to spawn in fresh water...Many species of marine dolphins such as the Indo Pacific Humpback Dolphin and Bottle-Nose Dolphins are found in the creeks. Around 100,000 people, mainly fisher folk, live along the Delta and use the creeks and estuaries as fishing grounds. In recent years, unsustainable fishing practices have reduced the fish catch. Shrimps are a major export and Pakistan earns about US$100 million annually as foreign exchange from their export."

Lack of Freshwater Having an Adverse Effect

Map of the Indus River

Black dots indicate the locations of dams

As early as the 1890s, the Punjab irrigation system was established; in 1932, the Sukkur Barrage was built reducing freshwater to the delta; in 1958, the Ghulam Mohammad Barrage became operative and in the early 1960s the world's largest earth dam, Tarbela, was established on the Indus, depriving the delta of freshwater.

According to the figures compiled by the Sindh Irrigation and Power Department, the average annual and seasonal discharge downstream Kotri Barrage was 150 million acre feet (MAF) in 1880-92. It became 84.7 MAF in 1940-54, depicting a decrease of 10 percent. It dropped to 79.9 MAF in 1955-65, indicating a reduction of 12.9 percent; the discharge was 46 MAF in 1966-76 indicating a reduction of 45.7 percent. In 1977-92 the discharge was 35.2 MAF, indicating a reduction of 58.4 percent. And in the period 1992 onwards the discharge was merely 10 MAF; today the Indus Delta has been almost completely devoid of freshwater.

"Very little water is coming down the Kotri Barrage from the River Indus. As a result, the riverine forests, freshwater fisheries and agriculture, along with coastal forests are suffering immensely," said Tahir Qureshi, Director of Coastal Ecosystems in the World Conservation Union (IUCN) based in Pakistan.

Keti Bundar, a small town in the Indus Delta was once a bustling port where farmers grew red rice and Hindu traders exported it to India and the Gulf States and as far away as Indonesia. But today it portrays a pathetic picture. Seawater has intruded in the delta, destroying large tracts of fertile land, compelling farmers, fisherfolk and herdsmen to immigrate to greener pastures.

"1.6 million acres of agricultural land has been destroyed by sea intrusion," according to Mohammad Ali Shah, Chairman of Pakistan’s Fisherfolk Forum. "The fishery is facing hard times and large numbers of fisherfolk have been forced to immigrate to Ebrahim Haidery, a fishing village in the suburbs of Karachi, and elsewhere in the Sindh province."

Indus Mangroves Face Serious Threat

Local communities are striving to save the Indus’ mangroves

"The total area of mangrove forests in Sindh's Indus Delta is about 250,000 hectares and that of Balochistan's Makran coast is now estimated at only 7,500 hectares, i.e. 3% of the total mangrove forest coverage at the coastal areas of Pakistan. In view of their relatively small coverage, the mangroves in Balochistan could easily disappear if no proper action is taken, while those of Sindh are under severe pressure," according to the Tropical Rainforest Portfolio 1996-2001, a report compiled by the Directorate General for International Cooperation(DGIS), Ministry of Foreign Affairs, The Hague, The Netherlands, and the World Wide Fund for Nature (WWF), Zeist, The Netherlands.4

The report further says: "The mangroves in the Indus Delta are listed as the world's sixth largest contiguous mangrove area...Until recently, mangroves were considered as mosquito infected wastelands of no particular value. Today, conservation values of mangroves and the ecological services they provide have been well documented. Studies have shown that some 60-80% of the world's commercial fisheries catch are mangrove dependent species. The Indus Delta is considered as a coastal zone of very high economic and bio-ecological value. It is the main fish and shrimp nursery on which Pakistan's fishing industry depends. Hundreds of thousands of people are directly dependent on the mangrove ecosystem for their livelihood." 

But mangroves require freshwater, and lack of it in the Indus delta has badly affected them. According to Dr. Akhter Hai, a senior economist at the Applied Economics Research Center in the University of Karachi, mangrove forests in the Indus Delta were spread over 186,000 hectares in 1966 and were reduced to 57,000 hectares by 1998.

A Less Prosperous Indus Delta

He says that over-harvesting of fish in the Indus delta, use of seine or fine nets, wastage of fish catch due to poor storage and market linkages and the use of juvenile dish catch for poultry feed would lead to a decrease in income at the macro, regional and household levels as quantity and quality of fish catch decrease.

Mohammad Ali Shah, Chairman of Pakistan's Fisherfolk Forum says that use of otherwise banned "Gujja" and "Bhulla" nets that do not spare even the juvenile fish, has adversely affected the lives and livelihood of fishermen in the delta. 

The livestock has also been affected. Previously when freshwater was available, the delta had abundance of the Sohand and Pal grass that were consumed by livestock. But lack of freshwater has affected these grasses and the livestock population.

The silt load brought by the Indus River has also reduced considerably transforming rich pastures into wasteland. According to the Irrigation and Power Department of the Government of Sindh, the silt load was 400 million tons in 1880-92. After the Sukkur Barrage was constructed in 1933, the silt load dropped to 225 million tons in 1940-54. It was further reduced to 100 million tons in 1977-92 after construction of the Tarbela Dam. From 1992 onwards the silt load has been reduced to a mere 30 million tons.

"Before dams and barrages were built in the Indus Valley, the delta area was crisscrossed by the distributaries of the Indus. The discharge from the river was large enough to affect the ocean currents up to over a hundred miles from the shore. Due to this enormous quantity of fresh water and the silt the river brought with it, the delta lands were the richest that today constitutes Pakistan," according to Arif Hasan.5 Today the Indus Delta portrays a pathetic picture of impoverished farmers and fishermen, always eager to immigrate.

References:

1- Stanley Wolpert, A New History Of India, Oxford University Press, 1977

2- Ibid.

3- Jean Fairley, The Lion River The Indus, Penguin Books Ltd, London, 1975

4- Tropical Rainforest Portfolio 1996-2001, The Netherlands, 1996

5- Arif Hasan, The Unplanned Revolution, City Press, Karachi, 2002


* Shahid Husain is a senior reporter with the Daily Times, Pakistan. He can be reached at: husainwasi@hotmail.com. 

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