RAINWATER RAINWATER HARVESTING HARVESTING
AND AND ARTIFICIAL ARTIFICIAL
RECHARGE TO RECHARGE TO GROUND WATERGROUND WATER
PRESENTED BY
CHINTHU P WILSONS7,CIVIL ENGGRoll Number:20
GUIDED BY LECT. MANJU.P.MDEPARTMENT OF CIVIL ENGINEERING
WHAT IS WHAT IS RWH?RWH?
RWH refers to collection and RWH refers to collection and storage of rainwater and also storage of rainwater and also other activity such as other activity such as harvesting surface water harvesting surface water extracting ground water , extracting ground water , prevention of loss through prevention of loss through evaporation and seepageevaporation and seepage
PURPOSES OF PURPOSES OF RWHRWHStored for ready use in containersStored for ready use in containers ground or below ground ground or below ground
Charged into the ground for Charged into the ground for withdrawal laterwithdrawal later
BENEFITS OF RWHBENEFITS OF RWHRainwater harvesting prevents flooding of lowlying Rainwater harvesting prevents flooding of lowlying areasareas
Rain water harvesting replenishes the ground Rain water harvesting replenishes the ground water table and enables our dug wells and bore water table and enables our dug wells and bore wells to yield in a sustained mannerwells to yield in a sustained manner
It helps in the availability of clean water by It helps in the availability of clean water by reducing the salinity and the presence of iron saltsreducing the salinity and the presence of iron salts
RHH RHH TECHNIQUESTECHNIQUES
STORAGE OF RAINWATER ON SURFACE STORAGE OF RAINWATER ON SURFACE FOR FUTURE USEFOR FUTURE USE
RECHARGE TO GROUND WATERRECHARGE TO GROUND WATER
STORAGE OF RAINWATER STORAGE OF RAINWATER ON SURFACE FOR FUTURE ON SURFACE FOR FUTURE USEUSE
CHECK DAMSCHECK DAMS
RAINWATER HARVESTING FROM ROOFTOP CATCHMENTSRAINWATER HARVESTING FROM ROOFTOP CATCHMENTS
SUBSURFACE DAMSSUBSURFACE DAMS
FARM PONDSFARM PONDS
SUBSURFACE DAMSSUBSURFACE DAMS
CHECK DAMSCHECK DAMS
RAINWATER RAINWATER HARVESTING FROM HARVESTING FROM ROOFTOP CATCHMENTSROOFTOP CATCHMENTS
FARM PONDSFARM PONDS
RECHARGE TO GROUND RECHARGE TO GROUND WATER WATER
RECHARGE BORE PITRECHARGE BORE PIT
RECHARGE WELLRECHARGE WELL
RECHARGE WELL CUM BORE PITRECHARGE WELL CUM BORE PIT
SPREADING BASINSSPREADING BASINS
DITCHESDITCHES
HAND PUMPSHAND PUMPS
RECHARGE BORE PITRECHARGE BORE PIT
RECHARGE WELLRECHARGE WELL
RECHARGE WELL CUM BORE RECHARGE WELL CUM BORE PITPIT
DITCHESDITCHES
HAND PUMPSHAND PUMPS
SPREADING BASINSSPREADING BASINS
ADVANTAGES OF RWHADVANTAGES OF RWHPROVIDES SELF- SUFFICIENCY TO YOUR WATER SUPPLYPROVIDES SELF- SUFFICIENCY TO YOUR WATER SUPPLY
REDUCE THE COST FOR PUMPING GROUND WATERREDUCE THE COST FOR PUMPING GROUND WATER
REDUCE SELF EROSION IN URBAN AREASREDUCE SELF EROSION IN URBAN AREAS
RAINWATER HARVESTING SYSTEMS ARE SIMPLE WHICH CAN BE ADOPTED BY RAINWATER HARVESTING SYSTEMS ARE SIMPLE WHICH CAN BE ADOPTED BY INDIVIDUALSINDIVIDUALS
PROVIDE HIGH QUALITY WATER THROUGH DILUTION WHEN RECHARGE TO PROVIDE HIGH QUALITY WATER THROUGH DILUTION WHEN RECHARGE TO GROUND WATERGROUND WATER
IT CAN IMPROVE THE ENGINEERING BUILDING FOUNATION WHEN CISTERNS ARE IT CAN IMPROVE THE ENGINEERING BUILDING FOUNATION WHEN CISTERNS ARE BUILD AS BUILD AS PART OF THE SUBSTRUCTURE OF THE BUILDINGS, AS IN THE CASE OF PART OF THE SUBSTRUCTURE OF THE BUILDINGS, AS IN THE CASE OF MANDATORY CISTERNSMANDATORY CISTERNS
DISADVANTAGES OF RWHDISADVANTAGES OF RWH
TAKE CONSIDERABLE AMOUNT OF TIME TO PAY FOR ITSELFTAKE CONSIDERABLE AMOUNT OF TIME TO PAY FOR ITSELF
LEKAGE FROM CISTERNS CAN CAUSE THE DETERIORATION OF LEKAGE FROM CISTERNS CAN CAUSE THE DETERIORATION OF LOAD BEARNG SLOPESLOAD BEARNG SLOPES
THE SUCCESS OF RAINFALL HARVESTING DEPENDS UPON THE THE SUCCESS OF RAINFALL HARVESTING DEPENDS UPON THE FREQUENCY AND AMOUNT OF RAINFALL THEREFORE IT IS NOT A FREQUENCY AND AMOUNT OF RAINFALL THEREFORE IT IS NOT A DEPENDABLE WATER SOURCES IN TIMES OF DRY WEATHER OR DEPENDABLE WATER SOURCES IN TIMES OF DRY WEATHER OR PRONGED DRAUGHTPRONGED DRAUGHT
CONCLUSIONCONCLUSION
• IN DENSELY POPULATED COUNTRIES LIKE INDIA, THE DEMAND FOR WATER GOES ON INCREASING WITH INCREASE IN POPULATION. THIS PROVES TO BE MAJOUR 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 PROBLEM IN OUR EXPLORING NEW SOURCE OF WATER , RAINWATER NATURALLY AND FREELY AVAILABLE SOURCE CAN BE PROPERLY UTILIZED BY MEANS OF WATER HARVESTING AND RECHARGINGHARVESTING AND RECHARGING
• RAINWATER HARVESTING IS A VIABLE TECHNOLOGY FOR ENCHANCING PRODUCTION FROM THE RAINFED LANDSRAINWATER 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 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 RAINWATERTO DEPEND ON RAINWATER
• A STRATEGY TO IMPLEMENT THE GROUND WATER RECHARGE. IN A MAJOUR WAY NEEDS TO LAUNCHED WITH CONCERTED EFFORTS BY VARIOUS GOVERNMENTAL AND 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 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.SUSTAINABLE SOURCE FOR SUPPLEMENTING WATER SUPPLY NEEDS.
REFERENCESREFERENCES
• Chu,S.C and Liaw,C.H 1995-1997 study of industrial rainwater catchment systems(I)-Chu,S.C and Liaw,C.H 1995-1997 study of industrial rainwater catchment systems(I)-(III). Final Report of Indus. Tech.Res.Inst(III). Final Report of Indus. Tech.Res.Inst
• Liaw,S.C and Tsai,Y.L.2002. Application of rainwater retardation and retention for a Liaw,S.C and Tsai,Y.L.2002. Application of rainwater retardation and retention for a healthy water envirnoment in urban areas.Journal of water resources managementhealthy water envirnoment in urban areas.Journal of water resources management
• Liaw,C.H., Chen,H.K, Chang, K.c. and Tsai, Y.l. 2000. Feasibility analysis of rainwater Liaw,C.H., Chen,H.K, Chang, K.c. and Tsai, Y.l. 2000. Feasibility analysis of rainwater catchment systems in taiwan,proc. East Asia 2000 Rainwater utilization catchment systems in taiwan,proc. East Asia 2000 Rainwater utilization symposium:131-144, oct.1,2000,Taipei,Taiwansymposium:131-144, oct.1,2000,Taipei,Taiwan
THANK YOUTHANK YOU