FARGO, N.D. Salesmen in Fargo are hawking products with names like the Muscle Wall and the Sandbagging Buddy. Emergency workers in Keokuk, Iowa, are planning to barricade the water treatment plant with limestone boulders. The farmers' cooperative in Quincy, Ill., is moving grain inland to keep it dry.

Spring could bring disastrous flooding again to the Upper Midwest, government forecasters are warning. And folks along the Red, the Mississippi and the Missouri rivers are taking precautions, especially after calamities last year and the year before.

The National Weather Service said heavy snow cover and ground that is already saturated could lead to severe flooding in as little as a few weeks. Exactly how severe will depend on how fast the snow melts and how heavy the spring rains are.