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Rainwater harvesting collects precipitation for irrigation, toilet flushing, or emergency use. It reduces groundwater demand and stormwater runoff.
सूत्र
Calculate: Annual collection = Catchment area × Annual rainfall × Collection efficiency
चरण-दर-चरण मार्गदर्शिका
- 1Calculate: Annual collection = Catchment area × Annual rainfall × Collection efficiency
- 2Roof collection: 90% efficiency, pavement: 70%, storage needed for dry periods
- 31000 m² roof, 1 m rain: 700-900 m³ water available
हल किए गए उदाहरण
इनपुट
Residential roof 100 m², annual rainfall 500 mm
परिणाम
Annual collection ~45 m³ (45,000 L), covers 30-40% irrigation needs
Location dependent
सामान्य गलतियां जिनसे बचना है
- ✕Under-sizing tank for dry season needs
- ✕Forgetting overflow management (can cause flooding)
अक्सर पूछे जाने वाले प्रश्न
Is rainwater safe to drink?
No without treatment. Suitable for irrigation, toilet, washing after basic filtration.
How large must storage tank be?
Rule of thumb: volume for one dry month. Location's dry season determines sizing.
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