Drainage Drainage Systems in India Flow of water from a higher to a lower level is called drainage. It also refers to the river system of any particular area. The Indian River system is divided into two groups- the Himalayan Rivers and the Peninsular Rivers. The Himalayan Rivers They have water all throughout the year and originate from the mountains in the north. They flow through the mountains and form gorges. Himalayan rivers cover long routes before falling into the sea.
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FLOODS What causes Floods? Heavy Rainfall: Causes increase in sea level rise etc. Over–saturated soil (when the ground can’t hold in any more water and could turn into mud etc): Infiltration can’t take place due to the soil’s impermeability resulting in so then surface run off will be increased. High River‚ Stream‚ and Sea Level (caused by heavy rain/particle expansion): The amount of water in the channel becomes too high‚ forcing water inland. Objects such as fallen trees and littering can causes
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defined as any tragic event stemming from events such as earthquakes‚ floods‚ catastrophic accidents‚ fires‚ or explosions. It is a phenomenon that can cause damage to life and property and destroy the economic‚ social and cultural life of people. A natural disaster is any event of force of nature that is caused by environmental factors that has catastrophic consequences. Natural disasters include: avalanches‚ earthquakes‚ floods‚ hurricanes‚ impact events‚ landslides‚ mudslides‚ tornadoes‚ tsunamis
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1-Drainage system- A drainage system is the pattern formed by the streams‚ rivers‚ and lakes in a particular drainage basin. They are governed by the topography of the land‚ whether a particular region is dominated by hard or soft rocks‚ and the gradient of the land. 2-Drainage basin-A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point‚ usually the exit of the basin‚ where the waters join another waterbody‚ such as a
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Current Status and Problem of Drainage System in Kathmandu Valley A preliminary research proposal submitted for master’s degree By- Sudeep K.C. 1. Introduction Issues of drainage management have been a major problem in urban areas of Nepal especially in Kathmandu valley. The sewage and septic of every house is directly being drained into the rivers and rivulets. Rivers like Bagmati‚ Bishnumati‚ etc are being polluted due to ineffective management. This may be due to lack of co-ordination between
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A flood is an overflow of water that submerges land which is normally dry.[1] The European Union (EU) Floods Directive defines a flood as a covering by water of land not normally covered by water.[2] In the sense of "flowing water"‚ the word may also be applied to the inflow of the tide. Flooding may occur as an overflow of water from water bodies‚ such as a river or lake‚ in which the water overtops or breaks levees‚ resulting in some of that water escaping its usual boundaries‚[3] or it may occur
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------------------------------------------------- Flood A flood is an overflow of water that submerges land which is normally dry.[1] The European Union (EU) Floods Directive defines a flood as a covering by water of land not normally covered by water.[2] In the sense of "flowing water"‚ the word may also be applied to the inflow of thetide. Flooding may occur as an overflow of water from water bodies‚ such as a river or lake‚ in which the water overtops or breaks levees‚ resulting in some of that
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Volume 1 Specification for Road Works Series 500 Drainage and Service Ducts DRAINAGE AND SERVICE DUCTS Contents Clause Title 501 Pipes for Drainage and Service Ducts 2 502 Excavation for Pipes and Chambers 6 503 Bedding‚ Laying and Surrounding of Pipes 7 504 Jointing of Pipes 8 505 Backfilling of Trenches and Filter Drains 10 506 Connecting to Existing Drains Chambers and Channels 11 507 Chambers 11 508 Gullies and
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Government of Rajasthan Asian Development Bank Technical Assistance Project Number: 40031 India: Rajasthan Urban Sector Development Investment Program (RUSDIP) INITIAL ENVIRONMENTAL EXAMINATION (DRAFT) JAISALMER: URBAN DRAINAGE SUBPROJECT FEBRUARY 2006 CONTENTS I. INTRODUCTION ...................................................................................................... 4 A. Purpose of the report .................................................................................
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Research Initiative‚ Department of Chemical Engineering‚ University of Cape Town‚ Private Bag‚ Rondebosch‚ 7701‚ South Africa a r t i c l e i n f o Available online 17 June 2010 Keywords: Acid mine drainage Prediction test Sulfide tailings a b s t r a c t Acid mine drainage (AMD) is formed by the microbially catalysed oxidation of sulfide minerals on exposure to moisture and air. It results in the ongoing contamination of water streams with acidity‚ sulfate and metal ions in solution
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