Acknowledgments

The authors are truly indebted to the efforts and assistance from our National Park Service partners, especially Jordan Raphael, Patti Rafferty, Michael Bilecki, and Chris Soller. We thank Barry Irwin and Phil Thompson of the U.S. Geological Survey (USGS) for providing valuable field assistance. Amy Farris (USGS) contributed to this effort by creating code to derive the mean high water shorelines from field data.