From Paul Kincaid's review in Interzone #270:
Robinson is at pains to make clear that capitalism itself is to blame for the environmental failures. But capitalism is remarkably resilient: even among the ashes, the hedge funds make money. The intertidal zone, that flooded portion of Manhattan where tower blocks like the old Metropolitan Life building on Madison Square now house thousands of people in their own little islands, is disputed territory, its legal status now unknown. But life here has settled down since the last pulse, which means it is ripe for the money men to move in. One of Robinson’s characters has even devised an index that records the tidal movement of populations, the collapse of old towers, that provides a guide for hedge funds on when to invest, when to sell.New York 2140 entry at ISFDB.