Our Work

Clean Currents Coalition

Turning off the tap of plastic pollution entering the ocean through community-first, data-centric interventions in rivers around the world.

Let Phrao Canal

The Problem

Trash dumping site in Kenya
Trash clogs waterways in Nairobi, Kenya.

Humankind is on pace to produce 1 billion metric tons of plastic every year by 2050, and nearly 80% of all plastic ever made is accumulating in landfills and the environment. Up to 12 million metric tons of plastic enter the ocean annually, most of which originates from land sources. The majority of ocean plastic is transported via rivers. It is estimated that 300 metric tons of plastic are carried to the ocean from rivers every hour.

Citarum river

The Solution

Once it’s dispersed in the ocean, plastic is nearly impossible to recover. Rivers, on the other hand, offer a unique opportunity to implement targeted, high-impact and cost-effective intervention strategies to prevent plastic from reaching the ocean. The Clean Currents Coalition is a global network of eight teams in eight countries piloting plastic capture technologies in highly-polluted rivers and working to catalyze upstream changes in public policy, behavior, and waste management so that there isn’t plastic to be removed from the environment in the first place.


Data Generation

Trash on the ground

Collecting data on quantities and types of river plastic to advance scientific understanding and drive upstream change.

Waste Management

Brick pavers

Improving infrastructure and access to services and innovating creative new solutions to recycle and repurpose plastic waste.

Empowered Communities

TCGF team cleaning up trash from the river

Investing in underserved communities to provide the tools and resources required to take action against the environmental injustices of plastic pollution.


The Science & Technology

Trash collection device deployed in Jamaica, preventing plastic runoff into the ocean

The Interceptor Barrier™ and Interceptor Tender™ prevent plastic from entering Kingston Harbour, Jamaica and the Caribbean Sea.

A growing body of scientific evidence has revealed that rivers act as the main conduits of plastic waste entering the ocean. Relatively shallow, accessible, and acting as point sources of plastic pollution into the ocean, rivers are efficient locations to employ technology-based solutions for intercepting plastic. The Clean Currents Coalition is piloting a diverse set of technologies in various ecological and social contexts to build institutional knowledge and develop best practices so that river plastic interventions can be scaled and replicated around the world.

Coalition teams have deployed a range of technologies, from simple, low-cost barriers, booms, and traps to complex trash wheels and conveyor systems powered by renewable energy. In addition, the Coalition is supporting the development of artificial intelligence systems to improve the efficiency and accuracy of data collection methods. Using these technologies, the Coalition is building a dataset that characterizes the amount and types of plastic waste captured.

Clean Currents Coalition logo on opt of a collage showing a photograph of a woman rowing a boat on a blue river that flows between rocky terrain. In the background is an illustration of several rivers

Project Origin

In 2018, the Benioff Ocean Science Laboratory identified plastic pollution as a priority threat to ocean health and issued a request for proposals for river-based interventions. Thanks to the vision and generosity of the Benioff Family and The Coca-Cola Foundation, the project was expanded from one to eight rivers around the world. These eight solutions became the Clean Currents Coalition, a global network overseen by the Benioff Ocean Science Laboratory that is working to turn off the tap of plastic pollution from rivers to the ocean.

Project Website