That is factored into their approach. See https://theoceancleanup.com/rivers https://theoceancleanup.com/rivers for multiple approaches on how to prevent plasti

That is factored into their approach. See https://theoceancleanup.com/rivers https://theoceancleanup.com/rivers for multiple approaches on how to prevent plastic from making its way into the ocean. Also from the about section of the blog post: > They aim to achieve this goal through a dual strategy: intercepting in rivers to stop the flow and cleaning up what has already accumulated in the ocean. [...] To curb the tide via rivers, The Ocean Cleanup has developed Interceptor™ Solutions to halt and extract riverine plastic before it reaches the ocean.