Dorothy Merritts Dorothy Merritts is a geologist with expertise on streams, rivers, and the impact of humans and geologic hazards on landscape evolution. In the western United States, she conducted research on the San Andreas Fault of coastal California, and her international work focuses on fault movements in South Korea, Indonesia, Australia, and Costa Rica. Her primary research in the eastern United States is in the Appalachian Mountains and Piedmont, particularly in the mid-Atlantic region, where she is investigating the role of climate change and human activities in transforming the valley bottom landscapes and waterways of Eastern North America. Recently she partnered with other scientists and policy makers from multiple state and national government agencies to develop and test a new approach to stream and wetland restoration. She is a professor in the Department of Earth and Environment at Franklin and Marshall College in Lancaster, Pennsylvania. She is an author or co-author of more than 70 scientific articles, and the editor and contributing writer for numerous scientific books and field guides.