TY - RPRT TI - Assessment and validation of depressions in digital elevation models from multiple elevation data sources and delineation of depressions, sinking streams, and their watersheds in Tennessee and parts of Kentucky, Virginia, North Carolina, Georgia, Alabama, and Mississippi AU - David E. Ladd AU - John K. Carmichael PY - 2025 DO - 10.3133/sir20245134 UR - https://pubs.usgs.gov/publication/sir20245134 ID - sir20245134 ER -