Parched by a year of drought, Raleigh, N.C., has asked the Army Corps of Engineers to raise water levels in the city's main watershed by more than two feet to prevent the city from running out of water. But the Corps says two extra feet of water would endanger the lake's ability to store excess rainwater that could then spill over in the Neuse River, flooding cities downstream. "We're just trying to have a good, balanced attack to this to where we can react appropriately to either drought or significant flood events if they were to happen," says Terry Brown, a water-control manager for the Corps.

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