According to local authorities, up to 117 mm of rain overloaded local drainage systems.
Many families have reported flood water of some 15-35 centimetres inside their houses.
Many roads and streets in the area have also been put under water. Le Thanh Street experienced 80 centimetres of water. Other streets including Tran Hung Dao, Vo Nguyen Giap, Tran Phu were also submerged which caused congestion during morning rush hours.
Lao Cai authorities have warned that heavy rains may continue in the coming days and flash floods and landslides may occur in some mountainous areas.