Drainage ditch (IMAGE) University of Cambridge Caption Farming the Fens today is only possible because hundreds of pumping stations, combined with thousands of miles of watercourses, keep the water moving out to sea. Credit Jacqueline Garget Usage Restrictions With credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.