TY - RPRT TI - Mapping closed depressions in the karst region of northwest Puerto Rico using lidar-derived elevation data obtained in 2018 after Hurricane Maria AU - Lillian G. Smith AU - Daniel H. Doctor AU - Cheyenne L. Cox PY - 2023 UR - https://pubs.usgs.gov/publication/70267462 ID - 70267462 ER -