The Royal Irrigation Department (RID) has announced a gradual reduction in water discharge from the Chao Phraya Dam in Chai Nat from 1,900 to 1,800 cubic metres per second by 7pm on Wednesday, before maintaining the lower rate.
The RID said on Wednesday that the reduction would begin at noon, with the discharge rate being cut by about 15 cu m/sec per hour until it reaches 1,800 cu m/sec by 7pm.
At 6am, water flowing past the C.2 monitoring station in Nakhon Sawan province stood at 1,762 cu m/sec, while the flow through the Sakae Krang River at station Ct.19 in Uthai Thani province was 76 cu m/sec.
At the Chao Phraya Dam's C.13 monitoring station in Chai Nat province, the discharge rate was 1,900 cu m/sec, with the water level upstream at 15.96 metres above mean sea level.
In the Pasak River basin, Pasak Jolasid Dam in Lop Buri province was holding 812 million cubic metres of water, or 93% of its capacity, and was releasing water at 248 cu m/sec, with the rate trending downward.
At Rama VI Dam in Ayutthaya province, the water flow was 492 cu m/sec, also on a downward trend.
The Pasak River joins the Chao Phraya River before reaching station C29B in Sam Khok district of Pathum Thani province, the monitoring point upstream of Bangkok. The average flow there was 1,857 cu m/sec, with the volume being controlled at no more than 3,600 cu m/sec.
The department said it would continue to closely monitor rainfall and upstream inflows and adjust water management operations in line with changing conditions.
It urged the public and all relevant sectors to closely follow official water situation updates.