A non-transitory computer-readable medium includes computer-executable instructions for presenting dumpflood data to a user by implementing steps on a computer. The steps include: receiving first data describing a first subsurface volume; receiving second data describing a second subsurface volume that is deeper than the first subsurface volume; calculating pressures required for a fluid to flow in a borehole from the first volume to the second volume as a function of vertical height of the first volume (h1), permeability of the first volume (k1), vertical height of the second volume (h2), permeability of the second volume (k2), a first damage factor (S1) representing damage to the first volume, and a second damage factor (S2) representing damage to the second volume; and displaying on a computer display a graphical representation of the calculated pressures and inputs used to calculate the pressures.