RAINWATER HARVESTING AND ARTIFICIAL RECHARGE TO GROUND WATER full report
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08-02-2010, 06:55 AM


RAINWATER HARVESTING AND ARTIFICIAL RECHARGE TO GROUND WATER


WHAT IS RWH?

RWH refers to collection and storage of rainwater and also other activity such as

harvesting surface water extracting ground water , prevention of loss through

evaporation and seepage


PURPOSES OF RWH

Stored for ready use in containers ground or below ground
Charged into the ground for withdrawal later


BENEFITS OF RWH

Rainwater harvesting prevents flooding of lowlying areas
Rain water harvesting replenishes the ground water table and enables our dug wells

and bore wells to yield in a sustained manner
It helps in the availability of clean water by reducing the salinity and the presence

of iron salts




RHH TECHNIQUES

STORAGE OF RAINWATER ON SURFACE FOR FUTURE USE
RECHARGE TO GROUND WATER



STORAGE OF RAINWATER ON SURFACE FOR FUTURE USE

CHECK DAMS
RAINWATER HARVESTING FROM ROOFTOP CATCHMENTS
SUBSURFACE DAMS
FARM PONDS

ADVANTAGES OF RWH

PROVIDES SELF- SUFFICIENCY TO YOUR WATER SUPPLY
REDUCE THE COST FOR PUMPING GROUND WATER
REDUCE SELF EROSION IN URBAN AREAS
RAINWATER HARVESTING SYSTEMS ARE SIMPLE WHICH CAN BE ADOPTED BY INDIVIDUALS
PROVIDE HIGH QUALITY WATER THROUGH DILUTION WHEN RECHARGE TO GROUND WATER
IT CAN IMPROVE THE ENGINEERING BUILDING FOUNATION WHEN CISTERNS ARE BUILD AS PART OF

THE SUBSTRUCTURE OF THE BUILDINGS, AS IN THE CASE OF MANDATORY CISTERNS


DISADVANTAGES OF RWH

TAKE CONSIDERABLE AMOUNT OF TIME TO PAY FOR ITSELF
LEKAGE FROM CISTERNS CAN CAUSE THE DETERIORATION OF LOAD BEARNG SLOPES
THE SUCCESS OF RAINFALL HARVESTING DEPENDS UPON THE FREQUENCY AND AMOUNT OF RAINFALL

THEREFORE IT IS NOT A DEPENDABLE WATER SOURCES IN TIMES OF DRY WEATHER OR PRONGED

DRAUGHT


CONCLUSION

IN DENSELY POPULATED COUNTRIES LIKE INDIA, THE DEMAND FOR WATER GOES ON INCREASING

WITH INCREASE IN POPULATION. THIS PROVES TO BE MAJOUR PROBLEM IN OUR EXPLORING NEW

SOURCE OF WATER , RAINWATER NATURALLY AND FREELY AVAILABLE SOURCE CAN BE PROPERLY

UTILIZED BY MEANS OF WATER HARVESTING AND RECHARGING
RAINWATER HARVESTING IS A VIABLE TECHNOLOGY FOR ENCHANCING PRODUCTION FROM THE

RAINFED LANDS
GROUNDWATER RECHARGING BY ARTIFICIAL METHODS SHOULD BE TAKEN UP PRIORITY BASIS, FIRST

IN DISTRICT WHERE RAINFALL IS LESS AND RARE FARMERS HAVE TO DEPEND ON RAINWATE
A STRATEGY TO IMPLEMENT THE GROUND WATER RECHARGE. IN A MAJOUR WAY NEEDS TO LAUNCHED

WITH CONCERTED EFFORTS BY VARIOUS GOVERNMENTAL AND NONGOVERNMENTAL AGENCIES AND THE

PUBLIC AT LARGE, TO INCREASE THE WATER TABLE AND MAKE THE GROUND WATER RESOURCES, A

RELIABLE AND SUSTAINABLE SOURCE FOR SUPPLEMENTING WATER SUPPLY NEEDS


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.ppt   RAINWATER HARVESTING.ppt (Size: 428.5 KB / Downloads: 1,122)
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Wasim007
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23-08-2010, 09:34 PM

please send me the full report at: kwasim07@gmail.com
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nimish007
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09-09-2010, 02:34 PM

hey........please post me the complete details of this or email me at hero.vilon@gmail.com
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nimish007
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#4
09-09-2010, 02:34 PM

hey........please post

me the complete details of this or email me at hero.vilon@gmail.com
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nimish007
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09-09-2010, 02:34 PM

hey........please post me the complete details of this or email me at hero.vilon@gmail.com
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ok_2712
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#6
11-09-2010, 04:39 PM

Hi
i need more information related to ground water recycling
pls submt if do u hv
thnx
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seminarsonly
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#7
18-09-2010, 10:55 AM

Hi,
more details about raiwater harvesting can be found in:
cals.arizona.edu/pubs/water/az1344.pdf
scribddoc/23817508/Rainwater-Harvesting
scribddoc/26956199/Rainwater-harvesting
scribddoc/33897894/Rainwater-Harvesting


Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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ppravinp
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#8
07-10-2010, 06:07 PM

GOOD
it is a nice report
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project report helper
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29-10-2010, 11:27 AM


.pdf   Guide_on_ArtificialRecharge chandu.pdf (Size: 189.23 KB / Downloads: 24)
GUIDE ON ARTIFICIAL RECHARGE TO GROUND WATER


1.0 INTRODUCTION
The artificial recharge to ground water aims at augmentation of ground water
reservoir by modifying the natural movement of surface water utilizing suitable civil
construction techniques. Artificial recharge techniques normally address to following
issues -
(i) To enhance the sustainable yield in areas where over-development has depleted the
aquifer.
(ii) Conservation and storage of excess surface water for future requirements, since
these requirements often changes within a season or a period.
(iii) To improve the quality of existing ground water through dilution.
(iv) To remove bacteriological and other impurities from sewage and waste water so
that water is suitable for re-use.
The basic purpose of artificial recharge of ground water is to restore supplies from
aquifers depleted due to excessive ground water development.
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23-01-2012, 12:57 PM


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23-11-2012, 05:08 PM

RAINWATER HARVESTING AND ARTIFICIAL RECHARGE TO GROUND WATER



.docx   RAINWATER HARVESTING.docx (Size: 33.39 KB / Downloads: 24)

ABSTRACT

Water is most abundant component on earth surface, constituting about 70% of the planet surface. Although some 70% of the Earth's surface is covered by water much of this is saline. However freshwater is available in almost all populated areas of the earth although it may be expensive to access the water and the supply may not always be sustainable. Only 4% of the available water is suitable for drinking purpose.
Throughout most of the world, the most common contamination of raw water sources is from human sewage and in particular human faecal pathogens and parasites. In 2006, waterborne diseases were estimated to cause 1.8 million deaths each year while about 1.1 billion people lacked proper drinking water.
Here comes the necessity of water conservation. Rainwater harvesting is one of the suitable methods for water conservation.

INTRODUCTION

What is rainwater harvesting?

The term rainwater harvesting is being frequently used these days; however, the concept of water harvesting is not new for India. Water harvesting techniques had been
Evolved and developed in centuries ago.
Ground water resource gets naturally recharged through percolation. But due to indiscriminate development and rapid urbanization, exposed surface for soil has been reduced drastically with resultant reduction in percolation of rainwater, thereby depleting ground water resource.
Rainwater harvesting refers to collection and storage of rainwater and also other activity such as harvesting surface water extracting ground water, prevention of loss through evaporation and seepage

Why harvest rainwater?

This is perhaps one of the most frequently asked question, as to why one should harvest rainwater. There are many reasons but following are some of the important ones.
• To arrest ground water decline and augment ground water table
• To conserve surface water runoff during monsoon
• To reduce soil erosion
• Surface water is inadequate to meet our demand and we have to depend on ground water.
• Due to rapid urbanization, infiltration of rain water into the sub-soil has decreased drastically and recharging of ground water has diminished.
• Over - exploitation of ground water resource has resulted in decline in water levels in most part of the country.
• To enhance availability of ground water at specific place and time.

STORAGE OF RAINWATER ON SURFACE FOR FUTURE USE

The storage of rain water on surface is a traditional technique and structures used were underground tanks, ponds, check dams, weirs, etc. Rainwater flows away as surface runoff. This runoff could be caught and used for recharging aquifers by adopting appropriate methods. Some of the methods are
• Check Dams
• Subsurface Dams
• Farm Ponds
• Rainwater harvesting from rooftop catchments

Check Dams

Check dam is a small dam, which can be either temporary or permanent, built across a minor channel, swale, bios wale, or drainage ditch. Similar to drop structures in purpose, they reduce erosion and gulling in the channel and allow sediments and pollutants to settle. They also lower the speed of water flow during storm events. Check dams can be built with logs, stone, or sandbags. Of these, the former two are usually permanent or semi-permanent; and the sandbag check dam is usually for temporary purposes. Also, there are check dams that are constructed with rock fill or wooden boards. These dams are usually used only in small, open channels that drain 10 acres (0.040 km2) or less; and usually do not exceed 2 feet (0.61 m) high.

Subsurface dams

Subsurface Dams are groundwater dams, which are structures that intercept or obstruct the natural flow of groundwater and provide storage for water underground.
They have been used in several parts of the world, notably India, Africa and Brazil. They are used in areas where flows of groundwater vary considerably during the course of the year, from very high flows following rain to negligible flows during the dry season. Groundwater dams can be divided in two types: subsurface dams and sand storage dams.
A subsurface dam intercepts or obstructs the flow of an aquifer and reduces the variation of the level of the groundwater table upstream of the dam. It is built entirely under the ground

Farm ponds

Farm ponds are man-made bodies of shallow water constructed for several uses. Most landowners build farm ponds for leisure, agricultural, or aesthetic purposes. Fertilizing a farm pond is quite popular for people who would like to fill the pond with different fish or adapt it for business. Conceptualizing a farm pond design, on the other hand, is going to be a major concern of anybody who wishes to make the farm pond as a recreational area. Both the case, building a farm pond had been quite a popular endeavor nowadays and a number of them were constructed on the countryside where water sources are more than adequate.
Farm pond building follows certain principles in order for it to be done correctly. This is important especially if the farm ponds are going to be used commercially and revenue is expected.
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31-01-2013, 09:56 AM

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