Several other smaller, temporary venues, including the prominent wedge-shaped water-polo arena by David Morley Architects, will vanish for good, though their individual components can be reused.

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Ms. Gibson and Mr. Recoder (45 and 42, respectively), who specialize in light projections, wanted to utilize two of the park's salient features: the unique architectural wedge that punctuates the neighborhood, and the water towers atop the area's buildings.

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Although the agreement states that the contract is for the transfer of water, not water rights, letters to the local newspaper say this is the thin end of the wedge.

ECONOMIST: Water policy