A number of streets in Lacombe were closed early Tuesday afternoon due to high water, according to a spokeswoman for St. Tammany Parish.

Portions of Coral Street, East Street at Sapphire Street, Vermillion Street and Aqua Street were closed, as was all of Sapphire Street and Dresden Drive.

The parish was encouraging motorists to use North Mill Road to enter Oak Mill subdivision.

Also the five parish maintenance barns: at the Covington fairgrounds, the Keller Barn in Lacombe, at Koop Drive, at the Airport Road Barn in Slidell and the Fritchie Barn in Pearl River, were open for sand bags.

Two streets in Mandeville were also closed: Monroe Street, which had been closed down near its intersection with Massena Street, was reopened in mid-afternoon, according to the Mandeville Police department. Montgomery Street remained closed.

But in Slidell, where some areas are prone to street flooding during heavy rains, the police had not found it necessary to barricade streets.

Sgt. Daniel Seuzeneau said that the department had received early calls about street flooding in Lakewood and on Berkeley and Westchester streets in south Slidell. But officers who went to check out the areas did not deem them impassable.

Seuzeneau said that the department is on standby with barricades in case continued rain made street closures necessary.

“Slidell is like a playbook,’’ he said, noting that police know where the low spots are. But as of noon, there were no reports of stalled cars, no barricades up and “no major issues,’’ he said.

Just outside the city limits, Crossgates Boulevard at its intersection with Gause was impassable and had been barricaded. Crystal Tarter, manager for a dental office in the area, said.

Natasha Ashley, a dental assistant, said that the office canceled all its appointments, but one patient who had come in early for an appointment was stuck there. The parking lot, driveway and street were inundated, she said, a problem that happens frequently in heavy rain.

The St. Tammany Parish Sheriff’s Office is staging high water vehicles at key points around the parish. Spokesman George Bonnett said that the office is urging motorists to drive slowly through the water.

Classes at Delgado Community College’s north shore campus in Slidell were cancelled beginning at 12:30 p.m. , but offices remained open.

Follow Sara Pagones on Twitter at @spagonesadvocat.