Like other coastal regions of the world, Karachi coast, especially Manora channel, is heavily polluted due to untreated industrial wastewater and Metropolitan municipal sewage which indiscriminate discharge into coastal waters through Lyari and Malir rivers7. Apart from the eviction and resettlement of Lyari Expressway, redevelopment plans have also been carried out under the Lyari River Development Scheme  in other towns along the river such as Gulberg , North Nazimabad , Saddar , Jamshed , Gulshan-e-Iqbal and Liaquatabad. It indicates that water contains high levels of organic matter and quantity of oxygen to be used under specific condition of an oxidizing agent, temperature and time. Phosphate concentration was noted in the range of 1. Principal component analysis of Chinna creek water samples is presented in Table 4. For the sake of convenience we can give only graphs for a few locations of the Lyari River. These diagrams enable to design any number of channel section for given slope with different bed width and depth.
The lowest salinity value at Malir River is 2. The first three components of water Table 3 explained Sampling Points of Chinna Creek 2. The primary reason of this deprivation is illegal cutting of mangroves for fodder, timber and fuel, farming patterns, urbanization which leads to serious environmental and social tensions in the form of loss of habitat and biodiversity, decline in fish productivity and social problems for coastal communities. Views Read Edit View history. Marine pollution due to anthropogenic activities has now become a worldwide environmental concern1. Zoological Survey of Pakistan,
China Creek receives about 16 million gallons of untreated wastewater per day and toxic wastes of Karachi city, through Nehr-e-Khayyam, Rlver drain and a drain from the Habib Public School.
The spillage due to tidal action also continues resaerch affect the mangroves along the Karachi coast. The temperature values of samples from Malir River ranged from 33 MR- 1 to The Lyari River can be approximated as an open channel with trapezoidal cross section.
Arif Hasan | Lyari River
Sampling Points of Chinna Creek 2. The computed V is compared with the observed values and the values obtained through Manning formula.
This dumping of wastewater causes deprivation of flora and fauna to a higher extent. With resexrch passage of time there was a thick growth of mangroves in the area, which promoted siltation to the extent that the water reservoir capacity was drastically reduced resulting in loss of natural dredging effect.
The primary reason of this deprivation is illegal cutting of mangroves for fodder, timber and fuel, farming patterns, urbanization which leads to serious environmental and social tensions in the form of loss of habitat and biodiversity, riber in fish productivity and social problems for coastal communities. Almost all the parameters crossed the guidelines of National Environmental Quality Standards except pH.
The second component that explained Direct integration of Manning-based gradually varied flow equation. Abstract In this research an attempt has been pretended to dissect the conduct and the pollution index of Malir River and Chinna Creek contaminated with rver domestic and industrial wastewater and finally dump into Arabian Sea.
Pavlovsky in Sharma modified C in Manning formula.
From Wikipedia, the free encyclopedia. It indicates that microbes present in wastewater are utilizing oxygen present in water known as dissolved oxygen DO very rapidly to degrade organic matter. Conductivity or Electrical conductivity is a function of total dissolved solids TDS known as in concentration, which determines the quality of water16 The conductivity variation ofMalir River, range from 4.
Tirmizi Rssearch book Pvt. Abstract of research paper on Earth and related environmental sciences, author of scientific article — Sadia Tariq, Moazzam Ali Khan, Aamir Alamgir Abstract In this research an attempt has been pretended to dissect the conduct and the pollution index of Malir River and Chinna Creek contaminated with untreated domestic and industrial wastewater and finally dump into Arabian Sea. The lowest salinity value at Malir River is 2. Webarchive template wayback links Articles containing Urdu-language text Coordinates on Wikidata.
The present study was aimed to monitor the pollution level of Malir River and Chinna Pzper.
Articles Tagged: Lyari River
In the Clifton entrance was artificially closed with a view to use the Eastern Breakwater as intertidal water reservoir so that the water stored here during high tides leaves Manora channel at high velocity during ebb keeping the channel bed clean and. Hydraulic Modeling of River Flow. Kennish, Practical handbook of estuarine and marine pollution.
COD is the indirect measure of the organic compound in water. With many squatter settlements groomed in the river’s surroundings, the occasional floods started causing human and property loss. We are thankful to the Director, Institute of Environmental Studies, University of Karachi to provide the lab facility. By Ali Raza Nagari.
Published by Elsevier B. Hence, monitoring of marine coastal environment is essential to formulate a viable management strategy6.
Lyari River – Wikipedia
Karachi is situated near the coast, which makes it a focal center of industrial development, education and multi-culturalism For a number of reasons, which will be discussed in the paper, the Bypass was not built.
Pakistan Journal of Scientific and Industrial Research.
The highest value observed at Malir River is 0. This figure is continuously increasing day by day due to natural growth rate and migration from up country.