Connecticut River (IMAGE) University of Massachusetts Amherst Caption Ephemeral vs. non-ephemeral streams that make up the Connecticut River basin. “On a day in which every stream in the Connecticut River is flowing with its average annual condition, 59% the water entering Long Island Sound was sourced from these ephemeral streams—a.k.a., dry gullies in the woods,” Gleason says. Credit Craig B. Brinkerhoff Usage Restrictions To be used in coverage of the study Ephemeral stream water contributions to United States drainage networks 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.