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
