 thumb|right|many businesses in downtown waterproof have closed thumb|right|waterproof town hall thumb|right|first baptist church of waterproof thumb|right|st. francis of assisi catholic church thumb|right|abandoned buildings in waterproof reflect recent economic decline thumb|right|in contrast to the abandoned buildings, numerous attractive homes exist too waterproof is a town in tensas parish in northeastern louisiana, united states with a population of 834 as of the 2000 census. however, the population declined in the 2010 census by 17.5 percent to 688. the town in 2010 was 91.7 percent african american. some 24 percent of waterproof residents in 2010 were aged sixty or above.2010 u.s. census figures waterproof is approximately  north of ferriday, one of the two principal communities of concordia parish. the town is named for its relative safety from flooding prior to construction of the mississippi river levee system.{{cite book | la
Towns_in_Louisiana Towns_in_Tensas_Parish,_Louisiana