On August 17, 1969, Hurricane Camille made landfall at the tip of Louisiana before continuing to Bay St. Louis.

On August 29, 2005, at 10:00 a.m. CDT, Hurricane Katrina made its final landfall just west of Bay St. Louis, at the mouth of the Pearl River, causing a 28-foot (8.5 m) storm surge.
Hurricane Katrina came ashore during the high tide of 9:15AM, +2.3 feet more, causing a storm tide more than 30 feet (9.1 m) high.

USGS topographic maps show a common 25-foot (7.6 m) elevation contour line running throughout a ridge along the former routing of Highway 90 (Old Spanish Trail) on the western edge of the city.
As higher ground, this area was spared inundation from the storm surge of Hurricane Katrina.

Katrina damaged more than 40 Mississippi libraries, including severe roof and water damage to the Bay St. Louis Public Library.
The library reopened to the public on October 12, 2005.

The Bay St. Louis Bridge on US Highway 90 was severely damaged, with many bridge sections down-dropped at the west edges.
The destroyed bridge was replaced by a new Bay St. Louis Bridge, which received America's Transportation Award.
It includes a pedestrian bridge with an art walk featuring the works of local artists.

The underground utility infrastructure in Bay St. Louis received a federally funded total overhaul and replacement.
On August 17, 1969, Hurricane Camille made landfall at the tip of Louisiana before continuing to Bay St. Louis.
On August 29, 2005, at 10:00 a.m. CDT, Hurricane Katrina made its final landfall just west of Bay St. Louis, at the mouth of the Pearl River, causing a 28-foot (8.5 m) storm surge. Hurricane Katrina came ashore during the high tide of 9:15AM, +2.3 feet more, causing a storm tide more than 30 feet (9.1 m) high.
USGS topographic maps show a common 25-foot (7.6 m) elevation contour line running throughout a ridge along the former routing of Highway 90 (Old Spanish Trail) on the western edge of the city. As higher ground, this area was spared inundation from the storm surge of Hurricane Katrina.
Katrina damaged more than 40 Mississippi libraries, including severe roof and water damage to the Bay St. Louis Public Library. The library reopened to the public on October 12, 2005.
The Bay St. Louis Bridge on US Highway 90 was severely damaged, with many bridge sections down-dropped at the west edges. The destroyed bridge was replaced by a new Bay St. Louis Bridge, which received America's Transportation Award. It includes a pedestrian bridge with an art walk featuring the works of local artists.
The underground utility infrastructure in Bay St. Louis received a federally funded total overhaul and replacement.
Bay St. Louis, Mississippi