Photo from Facebook page "Mee Udomsap, Wang Nam Khiao District, Phiwphong Subdistrict".
In Nakhon Ratchasima, continuous rainfall has caused water levels in the Lam Chiang Sa Reservoir in Korat to rise until the spillway overflowed, sending water down to lower areas. Meanwhile, in Phimai District, the bypass road crossing the Lam Khem River has collapsed, with soil sliding away with the water mass.
A reporter reported that on the morning of 25 September 2026, the Facebook page “Mee Udomsap, Wang Nam Khiao District, Phiwphong Subdistrict,” managed by Mr. Montri Phiwphong, headman of Udomsap subdistrict, Wang Nam Khiao District, Nakhon Ratchasima, issued a water situation update. After several days of continuous rain, the water volume in the Lam Chiang Sa Reservoir has exceeded the storage level and overflowed the spillway, with water flowing down to lower areas.
At the same time, the water overflowing from the Lam Chiang Sa Reservoir flows into natural waterways through Than Ta Li waterfall, slightly increasing water volume but not yet breaching the banks or impacting the surrounding area. The ongoing rain also benefits agriculture, particularly the rainy-season rice fields in Udomsap.
Regarding the water situation in Lam Chiang Sa Reservoir, a medium-sized reservoir in Udomsap subdistrict, Wang Nam Khiao District, the water allocation and irrigation system improvement division of the Nakhon Ratchasima Irrigation Project reported via Facebook that the reservoir’s water volume has exceeded its normal storage capacity. As of 25 September 2026, the volume was 7.504 million cubic meters, approximately 101.25% of the normal storage capacity of 7.50 million cubic meters.
However, local community leaders in Udomsap have warned residents living along the river to stay vigilant for flash floods and overflowing banks, and to closely follow official news updates.
In Ban Kluai, Village No. 7, Dong Yai Subdistrict, Phimai District, Nakhon Ratchasima, heavy continuous rain has forced residents to travel cautiously, especially near the bridge over the Ban Kluai route in Dong Yai Subdistrict. A new bridge over the Lam Khem River, a tributary of the Mun River, has been under construction since March but is not yet complete. The contractor created a temporary bypass with earth fill for passage, but continuous rain caused this bypass to collapse and the soil to slide away with the water, breaking the route and preventing passage.
Mr. Meun Pleedi, 73, a Ban Kluai resident of Dong Yai Subdistrict who regularly uses this route, said the Ban Kluai to Dong Yai road is about 6 kilometers long and connects Ban Nong Prue in Bot Subdistrict to Dong Yai, Phimai District. Because of the bridge construction, a bypass was made for travel. However, daily rain caused the soil to subside, leading to the bypass collapsing and forcing a temporary closure. Residents and travelers have suffered greatly since reaching Dong Yai or nearby districts such as Non Daeng, Huai Thalaeng, and Khong now requires a long detour.
While the contractor inspects and rushes repairs, some residents have braved crossing the muddy area by walking, pushing bicycles, or riding motorcycles to avoid long detours. Excavators have been used to scoop soil from the river to fill and compact the bypass temporarily to allow passage. If no more rain falls, repairs should finish soon and the route reopen normally. However, if rain continues, the road office and contractor will reconsider whether to close the route, prioritizing user safety.
