map-services.md
In arcgislayers: An Interface to ArcGIS Data Services

map servers can be opened

Code
  nhd_srv
Output
  <MapServer <13 layers, 0 tables>>
  CRS: 3857
  Capabilities: Data,Map,Query
    0: NHDPlusGage (esriGeometryPoint)
    1: NHDPlusSink (esriGeometryPoint)
    2: NHDPoint (esriGeometryPoint)
    3: NetworkNHDFlowline (esriGeometryPolyline)
    4: NonNetworkNHDFlowline (esriGeometryPolyline)
    5: FlowDirection (esriGeometryPolyline)
    6: NHDPlusWall (esriGeometryPolyline)
    7: NHDLine (esriGeometryPolyline)
    8: NHDArea (esriGeometryPolygon)
    9: NHDWaterbody (esriGeometryPolygon)
    10: NHDPlusCatchment (esriGeometryPolygon)
    11: NHDPlusBoundaryUnit (esriGeometryPolygon)
    12: WBDHU12 (esriGeometryPolygon)