🌧️ Rooftop Rainwater Harvesting & Artificial Recharge Assessment Tool

A web application for on-spot assessment of Rooftop Rainwater Harvesting (RTRWH) and Artificial Recharge (AR) potential. This tool enables users to evaluate feasibility, estimate runoff, and get recommendations for sustainable groundwater management.

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📌 Overview

Groundwater depletion is a major concern in many regions. While rooftop rainwater harvesting offers a practical solution, there is no simple platform for individuals to assess its feasibility.

This project aims to bridge that gap by providing a user-friendly application that:

• Estimates rainwater harvesting potential
• Suggests suitable recharge structures
• Provides cost and benefit analysis
• Encourages sustainable water practices

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🚀 Features

• ✅ Feasibility analysis for rooftop rainwater harvesting
• 🌧️ Rainfall data integration (location-based)
• 🌍 GIS-based groundwater insights (aquifer, depth, etc.)
• 📊 Runoff calculation and water demand estimation
• 🏗️ Structure recommendation (pit, trench, shaft, storage tank)
• 📐 Dimension calculation for recharge structures
• 💰 Cost estimation and cost-benefit analysis
• 📍 Auto location detection

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🧠 Core Calculation Logic

Runoff Estimation

Runoff is calculated using:

Runoff = Rainfall × Roof Area × Runoff Coefficient

• Rainfall → Annual rainfall (mm)
• Roof Area → in square meters
• Coefficient → depends on roof type

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Water Demand Estimation

Demand = Number of People × 135 L/day

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Structure Recommendation

Rule-based logic:

• Small roof → Recharge Pit
• Large area → Recharge Trench
• Deep groundwater → Recharge Shaft
• High runoff → Storage Tank

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🏗️ Tech Stack

Frontend

• React.js

Backend

• Node.js + Express

Database

• MongoDB

GIS & Mapping

• Leaflet.js

APIs & Data Sources

• Rainfall: IMD / NASA POWER API
• Maps: OpenStreetMap / Google Maps
• Groundwater: CGWB datasets

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⚙️ System Architecture

Frontend (UI)
     ↓
Backend API
     ↓
Calculation Engine
     ↓
Database + GIS Data
     ↓
Response (Results + Recommendations)

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📦 Installation & Setup

1. Clone Repository

git clone https://github.com/van456-dot/Blue_Harvesters.git
cd BlueHarvesters

2. Backend Setup

Node.js

cd server
npm install
npm start

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3. Frontend Setup

cd client
npm install
npm run dev

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🔌 API Example

POST /calculate

Request

{
  "location": "Meerut",
  "roof_area": 100,
  "people": 5
}

Response

{
  "runoff": 65000,
  "feasible": true,
  "structure": "Recharge Pit",
  "dimensions": "2m x 2m x 2m",
  "cost": "₹25,000"
}

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🧪 MVP Scope

• Input form
• Basic runoff calculator
• Simple recommendation engine
• Static rainfall dataset
• Results dashboard

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🔮 Future Enhancements

• 🔹 Real-time GIS integration
• 🔹 Machine learning-based recommendations
• 🔹 Soil type & permeability analysis
• 🔹 IoT integration (rain sensors, water levels)
• 🔹 Mobile app deployment
• 🔹 PDF report generation
• 🔹 Regional language support

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🤝 Contribution

Contributions are welcome! Feel free to fork the repo, create a branch, and submit a PR.

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📜 License

This project is licensed under the MIT License.

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🙌 Acknowledgements

• Central Ground Water Board (CGWB)
• Indian Meteorological Department (IMD)
• OpenStreetMap

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💡 Impact

This tool aims to:

• Promote groundwater conservation
• Increase public awareness
• Enable data-driven decision making
• Support sustainable water management

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🌱 "Every drop counts – harvest rain, recharge groundwater."