The Latest on flooding affecting parts of the United States (all times local):

7:30 a.m.

Officials in western Arkansas are carefully watching a levee that’s beginning to deteriorate because of the overflowing Arkansas River.

Flood waters surround homes in Fort Smith, Ark. Wednesday, May 29, 2019 as water from the Arkansas River continue to rise. (AP Photo/Hannah Grabenstein)
Flood waters surround homes in Fort Smith, Ark. Wednesday, May 29, 2019 as water from the Arkansas River continue to rise. (AP Photo/Hannah Grabenstein)

The Van Buren Police Department says a portion of the levee system in rural Crawford County is “showing signs of significant leakage and deterioration” because of record flows from the river.

The area is near Fort Smith, where historic flooding is occurring because of a rush of water headed downstream from Oklahoma and Kansas.

Police say the Van Buren levee is still functioning but there is a risk of a breach. The National Weather Service predicts the river will remain above record levels in western Arkansas for at least several days.

In this Wednesday, May 29, 2019 photo, two cyclists ride along the Old River Control Structure, as swelling waters from the Mississippi River are diverted through the U.S. Army Corps of Engineers structure into the Atchafalaya Basin, in Vidalia, La. (AP Photo/Gerald Herbert)
In this Wednesday, May 29, 2019 photo, two cyclists ride along the Old River Control Structure, as swelling waters from the Mississippi River are diverted through the U.S. Army Corps of Engineers structure into the Atchafalaya Basin, in Vidalia, La. (AP Photo/Gerald Herbert)

In Oklahoma, water levels are slowly dropping on the Arkansas River near Tulsa but widespread flooding remains.

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5 a.m.

In this Tuesday, May 28, 2019 photo, Rapid Creek overflows its banks on the eastside of Elk Vale Road  in Rapid City, S.D. (Adam Fondren/Rapid City Journal via AP)
In this Tuesday, May 28, 2019 photo, Rapid Creek overflows its banks on the eastside of Elk Vale Road in Rapid City, S.D. (Adam Fondren/Rapid City Journal via AP)

Illinois Gov. J.B. Pritzker is activating the Illinois National Guard to respond to recent severe flooding.

Pritzker is holding a Thursday morning news conference at the Illinois Emergency Management Agency in Springfield with Adjutant General Richard Neely and others about the planned activation.

The update comes a day after Madison County in southern Illinois was declared a disaster area and National Guard help was sought to aid in flood-fighting efforts. County Board Chairman Kurt Prenzler said the disaster exists due to record-breaking flooding along the Mississippi River.

Flood waters surround homes in Fort Smith, Ark., Wednesday, May 29, 2019. Flood waters from the Arkansas River continue to rise. (AP Photo/Hannah Grabenstein)
Flood waters surround homes in Fort Smith, Ark., Wednesday, May 29, 2019. Flood waters from the Arkansas River continue to rise. (AP Photo/Hannah Grabenstein)

Emergency management officials say agencies are pre-positioning equipment near levees and the county has sent its sandbagging machine to Alton. High water has forced some bridges across the Mississippi River to close between Illinois and Missouri, causing detours for some motorists.

In this Tuesday, May 28, 2019 photo, Josh Tedder inspects rising rising waters from the Platte River as he stands atop a newly built dike at Hansons Lake in Bellevue, Neb. (Chris Machian/Omaha World-Herald via AP)
In this Tuesday, May 28, 2019 photo, Josh Tedder inspects rising rising waters from the Platte River as he stands atop a newly built dike at Hansons Lake in Bellevue, Neb. (Chris Machian/Omaha World-Herald via AP)
Father and son Brad and Bart Hindley, take a boat to Brad's flooded house in Fort Smith, Ark., Wednesday, May 29, 2019. Brad said he doesn't live in a flood plain, but flood waters from the Arkansas River continue to rise. (Hannah Grabenstein/AP) (Hannah Grabenstein/AP)
Father and son Brad and Bart Hindley, take a boat to Brad’s flooded house in Fort Smith, Ark., Wednesday, May 29, 2019. Brad said he doesn’t live in a flood plain, but flood waters from the Arkansas River continue to rise. (Hannah Grabenstein/AP) (Hannah Grabenstein/AP)
In this Tuesday, May 28, 2019 photo, Jimmy Carroll walks through floodwaters around his house as rising waters from the Platte River threaten Hansons Lake in Bellevue, Neb. (Chris Machian/Omaha World-Herald via AP)
In this Tuesday, May 28, 2019 photo, Jimmy Carroll walks through floodwaters around his house as rising waters from the Platte River threaten Hansons Lake in Bellevue, Neb. (Chris Machian/Omaha World-Herald via AP)