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Training of Trainers Site Specificity of Rain Water Harvesting

Training of Trainers Site Specificity of Rain Water Harvesting. Workshop Conducted By Eureka Forbes Institute of Environment For Maharashtra Centre for Entrepreneurship Development. Site Specificity based on surface available for Harvesting. Roof top rain water

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Training of Trainers Site Specificity of Rain Water Harvesting

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  1. Training of Trainers Site Specificity of Rain Water Harvesting Workshop Conducted By Eureka Forbes Institute of Environment For Maharashtra Centre for Entrepreneurship Development

  2. Site Specificity based on surface available for Harvesting Roof top rain water Paved surface rain water Open surface rain water

  3. Site Specificity based on Usage of harvested water Usage --- Immediately …during rainy season

  4. Site Specificity based on Usage of harvested water Usage --- At a later date …

  5. Site Specificity based on Device of Water Extraction ‘Use When Available’ / recharge* Benefit restricted to rainy season only Surface harvestable … predominantly roof top Work involved –piping changes & filter If later date benefit needed ---storage volume and hence cost becomes high. O & M …Tank Cleaning *-no direct benefit None…

  6. Site Specificity based on Device of Water Extraction Benefit during & after rainy season Surface harvestable … roof top & other surfaces as well if proper filters applied Work involved –piping changes & simple / two chamber filters O & M … Filter cleaning … Well Cleaning Well / Ring well

  7. Site Specificity based on Device of Water Extraction Benefit during & after rainy season Surface harvestable … roof top & other surfaces as well if proper filters applied Work involved - piping changes & - Four Chambered / more complicated filters O & M … Filter cleaning … Well Cleaning Bore Well

  8. Site Specificity based on Site Slopes Benefit --- Ease of collection Cost … Less Slopes towards Recharge / storage device

  9. Site Specificity based on Site Slopes Problem --- Difficult to collect Cost … High … if extreme slopes…then pumping may be needed If other site conditions are conducive …Recharge of ground or a deeper re-charge through a recharge bore-shaft can be applied Slopes away from Recharge / storage device

  10. Site Specificity based on Site Location Benefit comparative ease in availability of funds Surface harvestable … roof tops & Paved surfaces Cost … High due to higher paving-labour & material Urban Areas….More of roofed and paved area

  11. Site Specificity based on Site Location Benefit simpler recharge possible due to open surface Surface harvestable … roof tops, paved surfaces & open surfaces Cost … Lesser cost as compared to metros …more need but less available funds Rurban Areas…some open area

  12. Site Specificity based on Site Location Benefit more space available for recharge due to open surface Surface harvestable … open surfaces Cost … Lesser cost – per capita – but usually a community based system is needed … Hardly any funds available with the users … Need for proper funding and community mobilization Rural Areas…Large open areas

  13. Site Specificity based on Site Geo-morphology Simple to recharge extraction device - well/ Ring well Techniques/ structures … Simple Recharge pits … Check dams work very well here Cost … Least cost Sandy flat terrain

  14. Site Specificity based on Site Geo-morphology Simple to recharge extraction device - Well/ bore well …if near creek - salty ground water Techniques/ structures … Simple Recharge pits/well-bore well recharge – Check dams work very well here Cost … Higher than that in sandy Muddy flat terrain

  15. Site Specificity based on Site Geo-morphology Difficult to recharge with shallow recharge structures extraction device - Well/ bore well Techniques/ structures … Deep Shaft Recharge well / bore well recharge Check dams work here Cost … Higher than that in sandy / muddy areas Clayey flat terrain

  16. Site Specificity based on Site Geo-morphology Easy to intercept flows Simple CCTs, gully plugs nala bunds etc work well here extraction device - Well/ bore well Techniques/ structures … Deep Shaft Recharge well / bore well recharge Cost … Higher than that in sandy / muddy areas grey/ brown/ red soil --- Gentle Slopes

  17. Site Specificity based on Site Geo-morphology Easy to intercept flows … Usually no water scarcity Simple CCTs, gully plugs nala bunds etc work well here extraction device - Well/ bore well Techniques/ structures … ponds / Deep Shaft Recharge well / bore well recharge Cost … Higher than that in sandy / muddy areas Black soil --- Gentle Slopes

  18. Site Specificity based on Site Geo-morphology Difficult to intercept flows … Usually summer time water scarcity Simple CCTs, gully plugs nala bunds etc DO NOT WORK HERE extraction device - Well/ bore well Techniques/ structures … Bunds/ponds / Deep Shaft Recharge /well / bore well recharge Cost … Higher than that in flat/ gentle slope areas grey/ red /brown soil --- steep Slopes

  19. Site Specificity based on Site Geo-morphology Very Difficult to intercept flows … Invariably summer time water scarcity Simple CCTs, gully plugs nala bunds etc DO NOT WORK HERE extraction device – Wells …springs Techniques/ structures … KT Bunds/ponds / Deep Shaft Recharge /well / bore well recharge Cost … Very High due to geology and slopes grey/ red /brown soil --- steep rocky Slopes

  20. Site Specificity based on Rain Fall Difficult to retain maximum available water Water availability is usually not a limiting factor …topography is …as most of such areas are sloping Costly structures Heavy rain fall

  21. Site Specificity based on Rain Fall Easy to retain maximum available water Water availability is usually a limiting factor …topography is usually conducive for recharge as these tend to be flatter or gentle slope areas Simpler structures Low rain fall

  22. Site Specificity based on Regulations Wells/ bore wells not permitted MIDC / GIDC areas

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