City Hall has rolled out preventative measures against flooding in Bangkok as heavy rains have been forecast this month by the Thai Meteorological Department (TMD).

Narong Ruangsri, deputy director of the Department of Drainage and Sewerage, said on Sunday that the measures were devised following the latest warning by the TMD.

The upper part of Thailand, including Bangkok, will experience heavy rains and thunderstorms from Wednesday until Friday due to a high-pressure system from China while some parts of the southern region will face downpours from Monday through Thursday.

City Hall workers will dredge roadside ditches and clean drainage facilities as well as remove rubbish and weeds blocking water flow so they can absorb and discharge rainwater to natural watercourses including the Chao Phraya River, as preparations step up.

Maintenance will be performed on water pump stations in preparation of an influx of floodwater.

Mr Narong said City Hall instructed contractors to speed up the construction of water pipelines for flood control works underground in several locations such as Song Sawat, Yaowarat, Charoen Krung, Narathiwat Ratchanakharin and Suan Phlu Roads.

Mr Narong also sought cooperation from the public not to throw garbage into local waterways as it would block water flow.