GRAFTON, Ill. — The Mississippi River is topping out at some problematic spots, but there is growing concern that spring floods are far from over.

The river was at or near crest at several places Sunday between the Quad Cities and near St. Louis. Some towns in the 100-mile stretch of river from Quincy, Ill., to Grafton, Ill., reached 10 to 12 feet above flood stage.

The good news was that most businesses and homes were dry, though hundreds of acres of farmland were under water, bridges were closed at Quincy and Louisiana, Mo., and countless roads were shutdown.

But river towns aren’t yet in the clear: An inch or more of rain is in the forecast as well as continuing accumulation of snow to the north, especially in Minnesota and the Dakotas. Flood watchers along both the Missouri and Mississippi rivers know that once that snow — record levels in some cases — melts, a lot of it ends up in the big rivers.

In La Grange, Mo., sandbags were holding back the murky Mississippi River water at City Hall, a bank and a handful of threatened homes, and the water was dropping. This flood was little more than an inconvenience, Lewis County emergency management director David Keith said.

“What we’re worried about now is all that snow melt in North and South Dakota and Minnesota,” Keith said.

Forecasters said up to 6 inches of new snow were possible in the Black Hills area of South Dakota through this morning. But AccuWeather meteorologist Alan Reppert said it may stay cold long enough to the north to make for a gradual melt. Of greater concern, he said, is the Red River in North Dakota, which could see significant flooding in the coming weeks.