FloodFree- A sustainable solution for urban heat and cooling

Inspiration

Seeing cities like Mumbai, Guwahati, and Chennai flood every monsoon while rural farmers remain underpaid and underemployed, pushed us to ask: What if we could solve both problems with one system? Inspired by sponge city models and green infrastructure around the world, we imagined a localized, human-first solution that turns unused urban space into climate assets, while creating income for those most affected by climate change.

What it does

FloodFree is a modular flood-mitigation system that combines:

1. Soak benches - public seating with built-in rain-absorbing pits
2. Green rooftop boxes - low-cost modules that cool buildings and slow runoff
3. A mobile app - connecting urban clients (schools, RWAs) with trained farmers or SHGs for installation and maintenance.

The system absorbs rainwater, cools cities, creates rural employment, and promotes climate awareness - all through local action.

How I built it

I designed the system to be:

• Technically feasible (layers of gravel, sand, and geotextile)
• Made with local, affordable materials like bamboo, coir, and recycled crates
• Easy to install by non-experts after short training

I created app mockups showing how tasks are posted, accepted, tracked, and paid out, modeled after gig platforms but tailored for sustainability work.

Challenges I ran into

• Balancing technical detail with visual simplicity in the sponge bench design
• Designing a mobile app that is intuitive for both urban users and farmers, considering language and literacy differences
• Ensuring feasibility without external funding - making the model as DIY and replicable as possible

Accomplishments that I'm proud of

• I created a solution that’s not just eco-friendly, but socially regenerative
• I developed a complete system- physical design + tech + business logic
• My pitch received mentorship interest and was called “deeply contextual and scalable” by industry reviewers

What I learned

• Solving environmental problems without involving communities doesn’t work
• Simplicity wins: the most powerful ideas often use local materials + human connection
• Even a bench can become a climate innovation, if it’s built with intention

What's next for FloodFree- A sustainable solution for urban heat and cooling

1. Launch a pilot in a school or public park with 2 benches and 1 rooftop box
2. Partner with a local NGO to onboard and train 10 farmers
3. Build a basic MVP version of the app using React Native and Firebase
4. Seek partnerships through CSR arms of Indian companies and Smart Cities missions

My goal: bring this to 10 cities and 1,000 farmers within 2 years.

Built With

• figma