Scott Doran's presentation discusses the complexities and challenges surrounding the new USEPA and Corps regulations defining jurisdictional waters, focusing on the Clean Water Rule proposed in June 2015 and its strong opposition. The document outlines Supreme Court decisions that have influenced jurisdictional definitions, the impacts of recent legal challenges, and significant changes in regulations concerning ephemeral streams and wetlands. It emphasizes the unpredictability of outcomes from ongoing legal disputes and advocates for improvements in the regulatory process.