This undated photo provided by the U.S. Army Corps of Engineers shows a diversion dam on Lowell Creek, high above the town of Seward, Alaska. Beginning every fall, heavy storms test Seward's antiquated flood-control system, leading to fears of a major disaster should it finally fail after nearly eight decades of diverting a fast-moving creek away from its historical route through town. Officials say a tunnel that carries flood waters from Lowell Creek to Resurrection Bay could get clogged by tree stumps or boulders. (U.S. Army Corps of Engineers via AP)
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