[The Source Code] Mapping barriers in our rivers Barriers in rivers can present huge problems for wildlife and water flow. Removal can be a complicated issue, and data collection plays an important role in addressing those which pose the biggest threats. Part of [The Source Code] series: regular tech and data insights from The Rivers Trust’s Heather Bell, celebrating the digital tools and teams powering environmental change. Sign up to our newsletter to get every piece delivered to your inbox. Learn more