, in some cases completely devastating coastal areas. In
Dauphin Island, approximately 90 miles (150 km) to the east of the point where the hurricane made landfall,
the sand that comprised the
was transported across the island into the
pushing the island towards land.
The storm surge and waves from Katrina also obliterated the
, which had been affected by Hurricane Ivan the previous year.
The US Geological Survey has
estimated 217 square miles (560 km
) of land was transformed to water by the hurricanes Katrina and
>The lands that were lost were breeding grounds for marine mammals, brown
well as migratory species such as
Overall, about 20% of the local
permanently overrun by water as a result of the storm.
The damage from Katrina forced the closure of 16
National Wildlife Refuges
. Breton National Wildlife Refuge
lost half its area in the storm.
As a result, the hurricane affected the habitats of
Alabama Beach mice
.The storm caused
44 facilities throughout southeastern Louisiana, which resulted in over 7 million U.S. gallons (26 million L) of
being leaked. Some spills were as small as a few hundred gallons; the largest are tabulated to the right.
While most of the spills were contained onsite, some oil entered th