We Map Flood Zones More Accurately

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Eligibility Criteria:

  • Yes, I fulfill all the eligibility criteria

First Name


Last Name



  • Woman

What is the Name of Your Organization?


What is The Mission of Your Organization?

Dorothy's mission is to model catastrophic risk better than current standards, increase public accessibility to this information and simplify disaster insurance processes for the individuals who really need it.

What is The Month and Year of The Founding of Your Venture?

September, 2018

What is Your Organization's Website URL (optional)

What is The First and Last Name of Your Organization's Representative for The Challenge?

Arianna Armelli

What is Their Organizational Role/Title?


Project Stage: Select the Description Below That Best Applies to Your Organization

  • Growth (have moved past the very first activities; working towards the next level of expansion)

Please Select Your Organization's Focus Track (Select all That Apply)

  • Built Environment
  • Sustainable Economies
  • Food, Water, & Waste
  • Public Health & Safety

Please Select Which of The Following Types of Innovations Best Characterize Your Work (Select all That Apply)

  • Product innovation (Introduction of a good or service or improvements made to existing products)

Please Upload Your Organizational Pitch Deck or Video

Using our proprietary technology, Dorothy was able to predict the flood extents of Hurricane Harvey 60% more accurately than FEMA. Our product seeks to better inform property owners of catastrophic risk at the National level.

Please email proof of incorporation to Challenge Manager- Marc Carr ( (for example, a certificate of incorporation, copy of your business license, etc.).

  • Uploaded

We would like insight into the financial and operational health of your organization. Therefore, please send at least one of the financial documents below to Challenge Manager Marc Carr (

  • Uploaded

Why is the problem that your organization is solving important to you and your co-founders/team?

Today, new home buyers are unclear of their flood risk and their coverage options. This is because we rely on outdated flood maps and antiquated insurance purchasing methods. So we built Dorothy, a catastrophic risk model that maps flood zones more accurately and offers comparable insurance quotes for purchase.

Please provide 1-2 examples of your product/organization making an impact on a city.

Fast forward 15-20 years. What does your organization look like? What is the impact that it's had on society?

Flooding is a global issue and the burden of that issue is increasing each year. Nationally we are seeing the effects on our infrastructure, economy, public health and housing stock. We would like Dorothy to be the national standard for disaster preparation. Dorothy will make catastrophic risk information more accessible to consumers. We will provide crucial data on risk as well as comparisons for insurance. As a country, we should be mapping risk better, we should be informing the public of that risk better, we should be doing better. Dorothy would like to be the better.

What differentiates your organization? What makes it so that you can drive a bigger and better benefit to society than other organizations in this space?

We see the importance in properly informing and insuring property owners with the models we create. We believe that consumer need and understanding will drive increased policy distribution, which will create an interconnected relationship between the consumer and carrier.

What is the key barrier today to your organization unlocking the maximum amount of impact on society?

I think one previous barrier was immature technology and information related to catastrophes. I think many organizations have solved this issue, including ours. Another key barrier is probably funding and capital, but whose isn’t?


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