In the outer magnetosphere, currents across magnetic field lines are carried out by protons, because of their greater energy, whereas field-aligned currents are carried by electrons. Consequently, thre is plasma enhancement or depletion on flux tubes where the two types of current connect. Thus field-aligned currents observed at low altitudes can be used to diagnose plasma redistribution in the outer magnetosphere. A stationary current sheet accompanies convection through a stationary plasma boundary. The observations of the location and strength of field-aligned currents are used to create a model of the currents, flows, magnetic topology and plasma distribution in the outer magnetosphere. Differences from previous models include the following: (1) A steady state flow may exist at subauroral latitudes. (2) The upward current sheet (Region 1 dusk, Harang, region II dawn) separates dipolar flux tubes from inflated taillike flux tubes. Flux tubes convecting earthward from the tail coppases in a dipolar shape as they convect through this sheet. (3) There is a significant intrusion of solar wind protons from the dawn flank into the plasma sheet between the region 1 and 11 currents.