Collecting Groundwater Samples (IMAGE) American Society of Agronomy Caption Eric Westberg collects a groundwater seep sample along the banks of the southern Nottawasaga River. Credit Natalie Senger. Usage Restrictions Please use with story only. License Licensed 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.