The canal along bt timah road links to the stamford canal, so if
the stamford canal didnt flood, or reach its full capacity, chances
are bukit timah is gone case.
They're not related.
There's 2 diversion canal built at Bt Timah: 1 tat leads
somewhere to Ulu Pandan, e other leading to Toa Payoh & Kallang
River.
The flooded area u posted leads to Keng Lee Rd, KK & the
Marina Barrage.