Project Description:

The Rainwater Harvesting Alert System is an IoT-based monitoring solution designed to optimize the use of rainwater collection systems. It monitors the water level in rainwater harvesting tanks and sends real-time alerts to users or municipal authorities when the tank is full, empty, or nearing capacity. This helps prevent overflow, encourages efficient use of collected water, and promotes sustainable water management.

It is ideal for homes, schools, apartment complexes, and public buildings where rainwater harvesting is implemented.

Technologies Used:

• Backend: PHP / Node.js / Java (for database and alert handling)

• Frontend: HTML, CSS, Bootstrap, JavaScript (for dashboard)

• IoT Hardware:

  • Microcontroller: Arduino / ESP32

  • Ultrasonic Sensor: For water level detection

  • Rain Sensor: To detect ongoing rainfall

  • Wi-Fi Module (ESP8266): For cloud connectivity

  • Buzzer/LED: For local alerts

  • GSM Module (optional): For SMS alerts in no-internet zones

Core Features:

1. Real-Time Tank Level Monitoring:

   • Detects the water level inside the storage tank using ultrasonic sensors.

   • Visualizes the current water volume as percentage or liters.

2. Overflow & Low-Level Alerts:

   • Notifies user when tank is about to overflow.

   • Alerts when the tank is empty or needs maintenance.

3. Rain Detection Integration:

   • Uses rain sensors to log rainfall events and estimate collection potential.

4. Data Logging & Analytics:

   • Records daily water collection stats.

   • Forecasts future rainwater storage capacity based on past trends.

5. Mobile/Web Dashboard:

   • View tank status, rain history, and alert logs.

   • Configure alert thresholds and frequency.