Khlong Chong Nonsi runs from Surawong road all the way down to the Chao Phraya river.
It covers a distance of 4.5 km (2.8 mi) through districts of Bang Rak, Sathon and Yan Nawa.
The BTS SkyTrain Silom Line is at the northern end and the BRT bus runs up and down most of the canal.
[2][3] A 2018 survey found that Khlong Chong Nonsi, especially the intersection of Silom and Surawong roads, was the dirtiest in Bangkok.
[4] On December 25, 2021, the Chong Nonsi Canal Park was opened by Bangkok Metropolitan Administration (BMA).