Baltimore County GovernmentThis point feature class represents high water marks captured by Baltimore County DPWT - Surveys section in November of 2003 following hurricane Isabel. Elevation values are in NAVD88. Most points have a PDF picture attachment available showing the location of the point surveyed.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/c95ea951011d47a7aa49646ab274ed5f_43engBaltimore County Open Data PortalPublicHigh Water Marks Isabel [Maryland--Baltimore County]Web servicesMaryland--Baltimore CountyMarylandLast Modified: 2023-09-19