[1][2] The lower portions of the original river have been channelized with levees built along its banks,[3][4] but flooding remains a real concern.
[4][5] Illegal buildings built along its banks were removed in 2014,[6] and fifty-eight village families were provided with replacement housing, but most of them could not be accommodated.
The Grogol continues north through Senayan City and just west of Gelora Bung Karno Stadium.
The Grogol River has a length of 23.45 kilometres (14.57 mi), with the watershed area (Indonesian: Daerah Pengaliran Sungai) of 32.08 km2.
[10] The average daily rainfall is 144 mm, with the peak flow rate at 290 m3 per second.