 Almost all of Manila sits on top of centuries of prehistoric alluvial deposits built by the waters of the Pasig and on some land reclaimed from Manila Bay . Manila 's land has been altered substantially by human intervention , with considerable land reclamation along the waterfronts since the American colonial times . Some of the natural variations in topography have been evened out due to the urbanization of the city . As of 2013 , Manila has a total area of 42 @.@ 88 square kilometres ( 16 @.@ 56 sq mi ) . 
 Almost all of Manila <a href='uninflect' title='1'><mark>sits</mark></a> on top of centuries of prehistoric alluvial deposits built by the waters of the Pasig and on some land reclaimed from Manila Bay . Manila <a href='null_genetive' title='2'><mark>'s</mark></a>land <a href='been_done' title='3'><mark>has</mark></a> been altered substantially by human intervention , with considerable land reclamation along the waterfronts since the American colonial times . Some of the natural variations in topography <a href='been_done' title='4'><mark>have</mark></a> been evened out due to the urbanization of the city . As of 2013 , Manila <a href='got' title='5'><mark>has</mark></a> a total area of 42 @.@ 88 square kilometres ( 16 @.@ 56 sq mi ) . 
Almost all of Manila sit on top of centuries of prehistoric alluvial deposits built by da waters of the Pasig and on some land reclaimed from Manila Bay . Manila  land done been altered substantially by human intervention , with considerable land reclamation along tdawaterfronts since thdamerican colonial times . sum of thedatural variations in topography done been evened outt due to the urbanization of the city . As of 2013 , Manila got a total area of 42 @.@ 88 square kilometres ( 16 @.@ 56 sq mi ) .