Hear The Pitch

The Problem

Every year, floods kill thousands of people and leave millions injured or homeless. Two thirds of flood drownings involve people driving, biking, or walking into flood water. Climate change will make flooding worse, and current monitoring is too expensive, imprecise, or time-delayed for widespread deployment.

The Solution

Green Stream uses low-cost, low-power sensors to provide authorities, businesses, and the general public with the data needed to plan for and react to floods appropriately, reducing safety risks and preventing property loss.

Green Stream’s end-to-end system monitors flooding and reports data in real time, answering two key questions: “where is it flooding?” and “how deep is the water?”

Over time, collecting this data will help build predictive models. These models will enable government officials, property owners, and other decision makers to make better decisions when it comes to investing in resilient infrastructure, helping to build smarter, safer, and more adaptive communities.

Market Opportunity

  • The cost of traditional sensors is prohibitive for many communities, and the information they provide doesn't adequately prepare people for flooding events.
  • Conservative estimates of the US demand for Internet of Things flood monitoring solutions add up to a total of $29 million over 2019-2020.
  • With cumulative revenues and add-on services such as prediction and maintenance of devices, the market for monitoring solutions will grow to an estimated $92 million over 2021-2023. Climate-related changes are likely to expand rather than shrink this market.

Organization Highlights

  • Successfully collected data during Hurricane Florence and the 2018 hurricane season on the Atlantic seaboard
  • After one year of operation, has installations and paid customers in four states
  • Media: Featured in Bloomberg, MarketWatch, ABC News

Existing Partnerships

Green Stream currently partners with a mixture of public and private organizations for pilot projects, such as:

  • R!ot’s Tech Network, which supports IoT solutions in North Carolina
  • North Carolina’s Department of Emergency Management in partnership with Atkins Global and ESP Associates
  • Acts as the network operator and jointly deploys sensors with Senet in a call for smart cities
  • Collected data is used by the Virginia Institute of Marine Science and Old Dominion University for research

Organization Goals

Green Stream seeks to achieve the following goals:

  • Expand to non-governmental customers such as real estate developers and property managers
  • Pivot towards providing data services rather than physical hardware
  • Scale sensor manufacturing and maintenance networks for the sensors

Partnership Goals

To reach the goals mentioned above, Green Stream seeks partnerships to:

  • Improve business strategy around pricing for sensors, data, communications, and how to expand to new markets
  • Create marketing collateral and an outreach strategy for proactively targeting municipalities and commercial real estate
  • Advise on reducing the size, power consumption, and price of manufacturing sensors
  • Assist with a maintenance model for installing and monitoring sensors over a geographically diverse network


Within one year, Green Stream has directly affected 11 million people living in the US and Canadian communities with Green Stream’s sensors.

Solver Team

Organization Type:

Norfolk, VA, USA


Working in:



Solution Team:

  • Prof Larry Atkinson Professor Emeritus, Old Dominion University
  • Wouter Deconinck Science, Technology & Applied Research LLC
  • Dr. Tal Ezer Professor of Ocean Earth & Atmospheric Sciences, Center for Coastal Physical Oceanography, ODU
  • James Gray President, Green Stream Technologies, Inc.
  • Ms. Karen Lindquist Chief Operating Officer, Green Stream Technologies Inc
  • MP MP
  • Mouhamed Rebeiz CyberSecurity Engineer, Green Stream Technologies, Inc.
  • Rand Walker Startup Smart


Monitoring Real-Time Flood Data

Solver Green Stream, which monitors and reports real-time flood data, participated in the Microsoft Global Social Entrepreneurship Program, receiving access to $25,000 in resources including Microsoft Azure Cloud credits, a Microsoft for Startups cloud subscription, and a GitHub Enterprise monthly subscription.


Monitoring Real-Time Flood Data

Solver Green Stream, which monitors and reports real-time flood data, received a $10,000 grant from Solve in 2018 for being selected as a Coastal Communities Solver.

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