Study water conservation methods through various water harvesting techniques/recharge system in your locality which is in practice. Make documentation of it with diograms. – Maharashtra State Board Class 11 Environmental Studies (EVS) project topic and guidance.
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Project 24 : Study water conservation methods through various water harvesting techniques/recharge system in your locality which is in practice. Make documentation of it with diograms. is an officially approved project topic in the Maharashtra State Board Class 11 Environmental Studies and Water Security curriculum. This comprehensive study equips students with practical field methodologies, ecological analysis, and empirical data required for securing an 'A' grade in school/junior college internal assessments.
Environmental Education and Water Security emphasizes sustainable development through scientific investigation. The practical documentation provided below covers the core findings, observations, and policy measures needed for comprehensive academic evaluation.
Aim of the Study: To study, document, and prepare architectural sketches of rooftop rainwater harvesting and groundwater borewell recharge systems operational in residential and commercial premises in the locality.
Field inspection of three functioning RWH systems (residential apartment complex, college campus, and industrial shed), measuring rooftop catchment areas, inspecting filtration media, and interviewing maintenance engineers.
This scientific investigation conforms strictly to Maharashtra State Board practical guidelines, incorporating primary survey data, empirical observations, and practical field documentation.
The following empirical observation matrix demonstrates standard data collection parameters, field measurements, and recorded outcomes for this project study:
| Engineering Parameter | Measurement / Data Value | Calculation Formula / Methodology | Annual Impact & Outcome |
|---|---|---|---|
| Rooftop Catchment Area (A) | 1,200 square meters | Concrete terrace rooftop measurement | Captures all incident rainfall over building footprint |
| Average Annual Rainfall (R) | 750 millimeters (0.75 m) | Regional Meteorological Data | Provides total theoretical rainfall of 900,000 liters |
| Runoff Coefficient (C) | 0.80 (80% efficiency) | Standard concrete terrace factor | Accounts for evaporation and initial wetting absorption |
| Annual Harvestable Water (V) | 720,000 Liters (720 m³) | V = Area × Rainfall × Runoff Coeff | Equivalent to 72 large 10,000-liter commercial water tankers |
| Total Installation Capital Cost | Rs. 65,000 (Pipes + Filter pit) | One-time civil and plumbing expense | Full investment payback achieved within 9 months of operation |
The field study and investigation of Project 24 focuses on the following key environmental observations and highlights:
A comprehensive analysis of Project 24 reveals crucial insights regarding water conservation and local ecological resilience. By examining empirical data collected in the field, students understand the direct impact of human activity on ecosystems and learn practical conservation strategies applicable to Maharashtra's local environment.
Rooftop rainwater harvesting is the most direct solution to urban and rural water crises. Catching rain where it falls prevents city stormwater drains from overflowing, recharges rapidly dropping groundwater tables, and grants communities independent water security.
To secure full marks (30/30) in your internal project evaluation, structure your handwritten project file in the following official order:
Harvestable Rainwater (Liters) = Catchment Area (sq. m) × Annual Rainfall (mm) × Runoff Coefficient.
It diverts the initial dirty rain runoff containing atmospheric dust, bird droppings, and leaves away from the clean storage filter.
Layers of graded boulders, coarse gravel (20-40 mm), coarse river sand, and activated charcoal (for odor and color removal).
Yes, provided it passes through proper filtration followed by boiling, UV disinfection, or domestic RO purification.
Yes, municipal corporations mandate RWH systems for all new construction plots exceeding 300 to 500 square meters.