Flood in Wayne County, Missouri

Record flooding occurred on the St. Francis River as the month began. The river crested at 37.05 feet on the Patterson river gage on the evening of April 30th. The old record was 35.77 feet in December of 1982. Numerous roads were closed, including Business Route 67 in Greenville and Route 34 at the St. Francis River Bridge. The record river flooding affected Lake Wappapello, which is formed by a dam on the St. Francis River near the town of Wappapello. Water poured over the emergency spillway of the dam. Mandatory evacuations were considered for areas below the dam. The lake levels in Lake Wappapello came close to the record set in 2011, but they did not reach it. Highway T just below the dam was washed out.

Flooding of the Black River occurred below Clearwater Dam. The lake levels behind the dam reached a record height. For the first time in the dam's history, water passed through the emergency spillway of the dam. This prompted concerns about flooding below the dam. A mandatory evacuation was considered for some residents below the dam. Several roads were closed, including Route 49 at Mill Spring. Damage to public property, including roads, bridges, and utilities, was estimated near one million dollars.

In an area that was severely impacted by record flooding in March, major creek flooding occurred. Voluntary evacuations were requested for Piedmont, where McKenzie Creek left its banks. A few people were rescued on the south side of Piedmont. About 40 people were sheltered at a church as a precaution. No more than a half dozen homes were affected by this flood in Piedmont. The levels of McKenzie Creek were reportedly only about one-third of the height of the March 18 flood. Main Street was partially covered by creek floodwaters, and water lapped at the base of a bridge. Along the Black River west of Piedmont, nine people were evacuated by boat from a subdivision along the Black River. Half of the subdivision was underwater. Some of the homes had over six feet of water in them.