Property: Fair or foul, U.S. officials diverted floodwaters to farmlands to save cities as the mighty Mississippi spilled its banks. But there was a surprise: Farmers chose not to be victims. The weekend was full of disheartening news of tornadoes striking Missouri and Minnesota, as well as creeping floodwaters making their way down to the Gulf states in the worst flooding in at least two decades. But there was one unexpectedly heartening development: News photographs from tiny Vicksburg, Miss., where 2,100 people have been displaced, showed dozens of farm houses along the Mississippi River and its Yazoo tributary encircled by...