The Mississippi River rose above major flood stage and unofficially tied the record Sunday for the seventh highest level in the community's 202-year history. Heavy rain over much of the Midwest on Saturday caused another spike in water levels along the river and its tributaries, especially in Iowa, Missouri and Illinois.

Additional sandbags were installed to save homes, businesses and the post office from the surging Mississippi River as spring flooding swamped fields, threatened homes and temporarily shut down a bridge connecting Missouri and Illinois.

So far, Mississippi River flood damage is far less severe than March flooding along the Missouri River in Nebraska, southwest Iowa and northwest Missouri, where hundreds of homes were damaged. Still, several Mississippi River communities were battling to stay dry.

Clarksville, a 440-resident community 90 miles north of St. Louis is known for its antique shops and artist galleries operating out of 19th century brick storefronts. The town sits square along the Mississippi, unprotected by a levee, and has been through many floods.

Highway 79 closed north and south of Clarksville.

A crest just above 34 feet was expected Monday in Clarksville, about 9 feet above flood stage. Despite the rising water, several businesses remain open, and Clarksville United Methodist Church continues feeding flood-fighters once a day. Additional supplies and donations of money are welcome.

Prison inmates were expected in town Monday to help with sandbagging. If you'd like to know how to help, call Clarksville City Hall at 573-242-3336.

As they've done so many times before, Clarksville residents and other volunteers built a makeshift wall around downtown, though this time, they started with a 6-foot layer of rocks as the base, with sandbags on top of the rocks.

In nearby Louisiana, Missouri, the flood briefly forced closure of the Champ Clark Bridge that connects Missouri and Illinois because water was lapping near the Illinois entrance to the bridge Sunday night. The closure created a hardship for commuters because the next nearest river crossing is at Hannibal, Missouri, 27 miles to the north.

But by Monday morning the river had crested, the bridge deck was clear, and the Louisiana bridge was reopened, Illinois Department of Transportation spokeswoman Jessie Decker said.

Precautionary sandbags were added to the top of a levee at Foley, a tiny town about 50 miles north of St. Louis. Lincoln County Emergency Management Director Jim Sharp said the river was expected to get close to the top of the levee and volunteers have been walking the levee to make sure it's holding.

"We haven't had anything over the top," Sharp said. "We haven't had a breach. We haven't had a failure anywhere."

The river was causing other problems, too. In St. Louis, the route for the upcoming Go St. Louis marathon and half-marathon had to be changed. The two runs combined are expected to draw about 15,000 participants on Sunday, and the original finish line was along the Mississippi near the Gateway Arch. That road is underwater, so the run will end elsewhere in downtown.

The severe flooding from last month in northwest Missouri may have claimed a life. The Platte County Sheriff's Department is investigating after a 61-year-old man's body was found Friday near an overturned boat in a flooded area not far from Bean Lake. The victim's name has not been released.

Authorities in several flooded areas where water was receding warned that danger still exists. In Sioux Falls, South Dakota, an intoxicated man was rescued from the Big Sioux River late Friday after police heard him yelling for help. Rescue crews used a ladder to get down a 12-foot retaining wall and a rope to pull the man to safety. He was treated for exposure.