 The largest among the barangays of Marikina during the colonial period, Calumpang was originally bordered on the northwest by the Marikina River and immediately opposite it are barangays Tañong and Jesus de la Peña.Floods and soil erosion would drastically alter its landscape, giving to shrinkage and expanding the two other barangays from silt buildup.Over time, part of the river dried up, giving way to what is known as Patay na Ilog, an area where Provident Village is now situated.