https://chs.coast.noaa.gov/htdata/Inundation/SLR/BulkDownload/DEMs/AL/AL_GCS_3m_NAVDm.tif
https://chs.coast.noaa.gov/htdata/Inundation/SLR/BulkDownload/DEMs/AL/Alabama_DEM_FY2021_Metadata.xml