Barrier islands like the Chandeleur Islands are constantly building, eroding, and shifting under the normal actions of wind and waves. A powerful storm like Katrina can produce changes that otherwise may have taken many years, and most of the changes seen here are probably the result of Katrina.
California experienced the largest decline in the number of people experiencing homelessness, 25,034 fewer since 2007. Other states with large declines included Texas (11,293 fewer people), Florida (6,527), New Jersey (5,643), and Oregon (5,426).
The national rate of homelessness in 2015 fell to 17.7 homeless people per 10,000 people in the general population from 18.3 in 2014. The rates in individual states ranged from 111 in the D.C. to 7 in Mississippi.