Loads the package outlet ID table
outletIDs()Columns: outlet_id: Node ID of the outlet within the infoworks model upstream_link_id: Infoworks ID of the link leading to outlet (this must be usedfor mass flow information) gerris_id: "Randbedingung" used in gerris (provided by Schumacher, Ingenieurbüro für Wasser und Umwelt) surface_water: name of the surface water the outlet discharges into water_body_km: the water body km where the outlet is located y_coordinate and x_coordanite: outlet location in soldner coordinates for Berlin all lat and lon columns: coordinates transformed from Soldner to UTM-Format (ETRS89 DREF91) comment: possibility to add comments (column not used by r-script)