Help fish navigate Dutch canals by ringing a digital doorbellThe Visdeurbel project allows viewers to assist migrating fish in Utrecht's Oudegracht canal by ringing a digital doorbell.
A balancing act as the river flowsThe installation of the Selective Water Withdrawal Tower in 2010 improved fish migration in the Deschutes River, leading to record fish returns.
Scientists are tracking ecological changes as the Klamath River dams come down - High Country NewsThe removal of four large dams along the Klamath River in Northern California is part of the largest dam removal project in U.S. history.