Ecopoetics Along Shorelines

What are the various senses of finish (or finished, as in over, dead, done for) in “Fluid Dynamics: Water, Power, and the Reengineering of Seattle’s Duwamish River”? Contrast the sense of time implied in these discourses of finality with the persistence and resurgence suggested in Thrush’s quoting of Terry Tafoya: “perhaps a thousand years from now, Indians will discover the decaying remains of the Space Needle.”