This document discusses dams, their structure, types, functions, and environmental impacts. Dams are barriers constructed across waterways to impound water for uses like irrigation, flood control, and hydropower. They come in various materials and styles, including embankment, gravity, and arch dams. While dams provide benefits, they also harm ecosystems by blocking animal migration, altering downstream flows, and trapping sediments. When built, dams can displace people and damage cultural sites. Dam failures can occur due to earthquakes, flooding, erosion, or design flaws, sometimes with severe consequences. Overall, the document outlines the key aspects of dams and some of their tradeoffs environmentally and socially.
Detailed description of Environmental Impact Assessment - Historical Background - Objectives - Assessment procedure - Necessity in Water resources projects - Environmental discourse on DAM construction - Case study
this presentation gives a brief about what are the different types of floods depending upon area & its cause.It is further aided with mitigation or management techniques to be implemented & types of damages.
Detailed description of Environmental Impact Assessment - Historical Background - Objectives - Assessment procedure - Necessity in Water resources projects - Environmental discourse on DAM construction - Case study
this presentation gives a brief about what are the different types of floods depending upon area & its cause.It is further aided with mitigation or management techniques to be implemented & types of damages.
A dam is a hydraulic structure of fairly impervious material built across a river to create a reservoir on its upstream side for impounding water for various purposes. A detailed ppt on dams,its types,pros and cons.
Water management is a global issue and it is the prime duty of all the people to save and conserve water so that it can be passed on safely to the future generation. Viewers please watch the ppt and leave your likes and comments.
A dam is a hydraulic structure of fairly impervious material built across a river to create a reservoir on its upstream side for impounding water for various purposes. A detailed ppt on dams,its types,pros and cons.
Water management is a global issue and it is the prime duty of all the people to save and conserve water so that it can be passed on safely to the future generation. Viewers please watch the ppt and leave your likes and comments.
it includes major reservoir(dam). it includes defenition of dams.it includes its uses.it also includes major types . includes advantages and disadvatages. it icludes various ecological aspects related to the dam
Thermal power house chemistry at DVC BANJHEDIH, KODERMA, JHARKHAND by Yashwan...yashwant yadav
ACKNOWLEDGEMENT
HOW MUCH THIS TRAINING WAS HELPFUL TO ME
The training at the DVC KTPS Banjhedih was very much helpful to me.
It is a matter of great pleasure and privilege for me to present this report of 20 days on the practical knowledge gained by me during practical training at KTPS Banjhedih, Koderma during session 11 oct 2017 to 30 oct 2017.
I attribute heartiest thanks to Dr. Sanjoy Kumar Sinha along with Chemist Mr. Arun Kumar Parmanik , Mr. Shashi Bhushan ,Mrs. Kumari Priti and Mr. Bhutnath Rajwar, Mr. Chandresh Kumar, Mr. Shushil Tuddu and greatly thanks to Dy. Manager (Chemist) Mr. Rasikan J. Bhengra. As well as workers of the chemical lab. The project has been prepared based on the vocational training undergone in a highly esteemed organization of Eastern region , a pioneer in Generation, Transmission & Distribution of power , one of the most technically advanced & largest thermal power station in Jharkhand, the KTPS Banjhedih under DVC.
Koderma Thermal Power Station providing me such opportunity to undergo training in the DVC, KTPS. I would also like to thank the senior chemists, highly experienced without whom such type of concept building in respect of thermal power station would not have been possible.
Thanks
Yashwant Yadav
Impact of landuse development on a highland freshwater lake.leona48
Intensive landuse development always be accused as the main factor to cause increase in generation of pollutants, taking the runoff as the transport medium. A study to find the relationship of landuse development and seasonal water quality changes in a highland lake, Ringlet Lake, Cameron Highland, Malaysia proves that as the percentage of watershed cleared area rised, the degree of water quality deterioration tends to increase accordingly. The study found that most of the parameter analyzed in both seasons shows that Ringlet Lake fell into Class III in the Water Quality Index, which need extensive treatment for domestic uses. The high percentage of cleared area as indicated by individual type of landuse leads to produce polluted runoff which ended up into the nearest river network, Bertam and Ringlet River and eventually entered the lake. In highland areas, a basin management of a water body should be more refined and specific in order to address focus of concerns in lake ecosytem health and quality impairment issues.
to cite this work : Nor Rohaizah Jamil, Muhammad Shafiq Ruslan, Mohd Ekhwan Toriman, Mushrifah Idris and Azwin Abdul Razad. 2014. Impact of Landuse on Seasonal Water Quality at a Highland Lake: A Case Study of Ringlet Lake, Cameron Highlands, Pahang. in A.Z. Aris, T.H. Tengku Ismail, R. Harun, A.M. Abdullah and M.Y. Ishak (Edit.) From Sources to Solutions. Proceeding of the International Conference on Environmental Forensics 2013. Chapter 74, Page 409-413. Springer. (ISBN : 978-981-4560-69-6)
This presentation reviews tailings dams and the hazardous waste contained within them. Basic design and the consequenses of design failure will also be reviewed.
Impact of Building Dam on River Ecosystem and Its Preventive Measures╚»Śăńğĩť Βăńĩķ«╝
To study the effects of dam construction to the river ecosystem.
To formulate dam running scheme that benefits eco-environment.
To review a case-study: Farakka Barrage.
Environmental Impacts of Hydroelectric PowerContentsLand.docxYASHU40
Environmental Impacts of Hydroelectric Power
Contents
Land Use
Wildlife Impacts
Life-cycle Global Warming Emissions
Contents
Land Use
Wildlife Impacts
Life-cycle Global Warming Emissions
Hydroelectric power includes both massive hydroelectric dams and small run-of-the-river plants.
Large-scale hydroelectric dams continue to be built in many parts of the world (including China and
Brazil), but it is unlikely that new facilities will be added to the existing U.S. fleet in the future.
Instead, the future of hydroelectric power in the United States will likely involve increased capacity at
current dams and new run-of-the-river projects. There are environmental impacts at both types of
plants.
Learn more: How Hydroelectric Energy Works
For more on the benefits of hydroelectric power and other renewable energy technologies, see
Benefits of Renewable Energy Use.
Land Use
The size of the reservoir created by a hydroelectric
project can vary widely, depending largely on the size of
the hydroelectric generators and the topography of the
land. Hydroelectric plants in flat areas tend to require
much more land than those in hilly areas or canyons
where deeper reservoirs can hold more volume of water
in a smaller space.
At one extreme, the large Balbina hydroelectric plant,
which was built in a flat area of Brazil, flooded 2,360
square kilometers—an area the size of Delaware—and it
http://www.ucsusa.org/clean_energy/our-energy-choices/renewable-energy/environmental-impacts-hydroelectric-power.html#bf-toc-0
http://www.ucsusa.org/clean_energy/our-energy-choices/renewable-energy/environmental-impacts-hydroelectric-power.html#bf-toc-1
http://www.ucsusa.org/clean_energy/our-energy-choices/renewable-energy/environmental-impacts-hydroelectric-power.html#bf-toc-2
http://www.ucsusa.org/clean_energy/our-energy-choices/renewable-energy/environmental-impacts-hydroelectric-power.html#bf-toc-0
http://www.ucsusa.org/clean_energy/our-energy-choices/renewable-energy/environmental-impacts-hydroelectric-power.html#bf-toc-1
http://www.ucsusa.org/clean_energy/our-energy-choices/renewable-energy/environmental-impacts-hydroelectric-power.html#bf-toc-2
http://www.ucsusa.org/clean_energy/our-energy-choices/renewable-energy/how-hydroelectric-energy.html
http://www.ucsusa.org/clean_energy/our-energy-choices/renewable-energy/public-benefits-of-renewable.html
only provides 250 MW of power generating capacity (equal to more than 2,000 acres per MW) [1].
In contrast, a small 10 MW run-of-the-rive plant in a hilly location can use as little 2.5 acres (equal to
a quarter of an acre per MW) [2].
Flooding land for a hydroelectric reservoir has an extreme environmental impact: it destroys forest,
wildlife habitat, agricultural land, and scenic lands. In many instances, such as the Three Gorges
Dam in China, entire communities have also had to be relocated to make way for reservoirs [3].
Wildlife Impacts
Dammed reservoirs are used for multiple purposes, such as agricultural ...
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DAMS AND THIER ENVIRONMENTAL IMPACTS
1. DAMS AND THEIR
ENVIRONMENTAL IMPACTS
Presented by-
Mohd Salman
16LPMS06
MSc. Plant Biology and Biotechnology
2nd Semester
Mohdsalmanuoh@gmail.com
Mentor -
Dr. Rahul Kumar
2. CONTENTS:-
• What is Dam??
• What is function of Dam??
• Why Build Dams??
• Structure of Dam
• Types of Dams
• Environmental Impacts of Dams
• Non- Reciprocal Effects of Dams on Society
• Dam Failure
• List of Important Dams in INDIA
3. WHAT ARE DAMS ?
A DAM IS A BARRIER ACROSS FLOWING WATER
THAT OBSTRUCTS,DIRECTS OR RETARDS THE
FLOW OFTEN CREATING A RESERVIOR,LAKE OR
IMPOUNDMENTS.
OR
A DAM IS AN ARTIFIACIAL BARRIER USUALLY
CONSTRUCTED ACROSS A STREAM CHANNEL TO
IMPOUND WATER.
DAM REFERS TO THE RESERVIOR RATHER THAN
THE STRUCTURE.
DAMS ARE MADE FROM A VARIETY OF MATERIALS
SUCH AS ROCK, STEEL, WOOD, CONCRETE OR A
COMBINATION OF THESE MATERIALS.
4.
5. WHAT IS THE FUNCTION OF A
DAM?
DAMS PROVIDE A MEANS OF
REGULATING DOWNSTREAM
SURFACE WATER FLOWS OVER
SPACE AND TIME BY ALTERING THE
NATURAL SPATIAL AND TEMPORAL
DISTRIBUTIONS OF STREAM FLOWS.
6. WHY BUILD DAMS?
TO IMPROVE THE QUALITY OF HUMAN LIFE BY
PROVIDING……
WATER QUALITYIRRIGATION
10. STRUCTURE OF DAM
HEEL: CONTACT WITH THE GROUND ON THE UPSTREAM SIDE
TOE: CONTACT ON THE DOWNSTREAM SIDE
GALLERIES: SMALL ROOMS LIKE STRUCTURE LEFT WITHIN THE
DAM FOR CHECKING OPERATIONS
SPILLWAYS: IT IS THE ARRANGEMENT NEAR THE TOP TO RELEASE
THE EXCESS WATER OF THE RESERVOIR TO DOWNSTREAM SIDE
SLUICE WAY: AN OPENING IN THE DAM NEAR THE GROUND LEVEL,
WHICH IS USED TO CLEAR THE SILT ACCUMULATION IN THE
RESERVOIR SIDE
DIVERSION TUNNEL: TUNNEL ARE CONSTRUCTED FOR DIVERTING
WATER BEFORE THE CONSTRUCTION OF DAM. THIS HELPS IN
KEEPING THE RIVER BED DRY.
11. BY SIZE DAMS ARE CLASSIFIED INTO TWO
TYPES:
1. Large dams ( higher than 15-20 meters)
e.g. Barrages dams
1. Major dams ( higher than 150-250 meters)
e.g. Nurek dam in Tajikistan
12. TYPES OF DAMS BASED ON STRUCTURE
e.g. Nagarjuna Sagar Dam (INDIA),
Grand Coulec Dam (USA)
e.g. Idukki Dam (INDIA),
Hoover Dam (USA)
e.g. Bartlett Dam (USA)
e.g. The Tehri Dam (INDIA)
13. BY USE DAMS CAN BE CLASSIFIED AS:
1. Check dam
2. Detention dam
3. Diversionary dam
4. Dry dam
5. Saddle dam
6. Storage dam
7. Overflow dam
8. Wing dam
9. Cofferdam
Check dam in HCU
16. ENVIRONMENTAL IMPACTS OF DAMS
Terrestrial Ecosystems and Biodiversity
Greenhouse Gas Emissions
Downstream Aquatic Ecosystems and Biodiversity
Impacts of changes in flow regimes
Impacts of trapping sediments and nutrients behind a dam
Blocking migration of aquatic organisms
17.
18. NON RECIPROCAL EFFECTS OF DAMS ON
SOCIETY
Hydropower
Irrigation, Drainage & Flood control
Displacement of People and Livelihoods
Downstream Livelihoods
Cultural Heritage
Under-counting of the displaced
Physically displaced populations enumerated but not resettled
Socio-economic Impacts through the Planning and Project Cycle
19.
20. DAM FAILURE
MAIN CAUSES OF DAM FAILURE-
EARTHQUAKES
EXTREME INFLOW
POOR MAINTENANCE , ESPECIALLY OF OUTLET PIPES
HUMAN, COMPUTER OR DESIGN ERROR
INTERNAL IRROSION OR PIPING, ESPECIALLY IN EARTHEN DAMS
SLIDING OF MOUNTAIN INTO RESERVOIR
SUB-STANDARD CONSTRUCTION MATERIALS/TECHNIQUES
SPILLWAY DESIGN ERROR
GEOLOGICAL INSTABILITY CAUSED BY CHANGES TO WATER LEVELS
DURING FILLING OR POOR SURVEYING
23. REFERENCES
• Dams And Development- A New Framework
For Decision-making The Report Of The
World Commission On Dams
• www.wikipedia.com
• http://www.internationalrivers.org/
• International Congress On River Basin
Management
