16 February 2012 12:00 AM
The idea of a river dying is not a common one. If we were to categorise how people feel about rivers, in so far as they do so at all, we might suppose that feelings generally focus on power and permanence. T S Eliot, contemplating the Mississippi pounding past St Louis where he grew up, thought of it as "a strong brown God". Oscar Hammerstein portrayed it as eternal: "Ol' Man River, he jes' keeps rolling along".