Aug 19, 2014
HCM City was seriously flooded by a heavy rain that lasted more than half an hour on the evening of August 18. Experts say that flooding is getting worse in the city.
Ms. Do Thi Bay, a resident of Kha Van Can Road, Linh Dong Ward, Thu Duc District, says that the authorities have only one way to prevent flooding in some areas: raising the height of roads, which is very costly.
She says before Kha Van Can Road was raised, motorcycles were flooded up to their seats whenever it rained. Now, floods cover up to half of the wheel. However, the houses along the road are submerged under water from 0.5 to 1m deep. If locals raise the floors, the road will be flooded deeply again.
The surface of Kha Van Can Street is higher than the windows of many houses along the road. The situation is the same on Pham Van Dong Road in Binh Thanh District.
Some people in alley 384 on Nam Ky Khoi Nghia Road, District 3, complain that after the road was lifted, the alley began being flooded.
According to the HCM City Flood Control Center, many sewers in the city are stuck because of mud and sand from construction projects.
The Centre has asked the city government for approval of 12 flood control projects for this year and 2015, with total capital of nearly VND1,860 billion. The projects will upgrade the drainage system on some routes and build dozens of reservoirs.
According Dr.Vu Van Nghi from the Vietnam Geological Society, the tide level in Southeast Asia has not changed significantly for many years. But HCM City's flooding has become increasingly severe, indicating that some local areas have sunk due to the pressure of construction building sites.
Using InSAR techniques, Dr. Le Van Trung from the Geoinformatics Center of HCM City National University confirmed that widespread subsidence has occurred in the city. The cause is from the rapid development of construction works, weak geological structure and the condition of excessive groundwater extraction.
Ho Long Phi from the National University of Ho Chi Minh City said that subsidence threatens not only the drainage works and makes flooding worse, but seriously affects construction works.
ZetaTalk ™ October 16, 2010
Thought the tipping of the Philippine Plate at first gives the islands of the Philippines some relief, as the subduction of the plate is pushing under them, as the bending of the tongue holding Indonesia progresses, they too find an astonishing loss of sea level. However, other than some small islands and the direct coastline, little of the Philippines will be affected by this rise in sea level, and safety can be gained if the coastal residents head for the hills at the first sign of sinking. Tsunami will affect the Philippines, to a potential height of 40 feet, so a prompt evacuation to be at least 20 miles inland is necessary. If the coast of southern China will lose 20 feet in elevation, the Philippines will ultimately lose twice that much, to a total loss of 40 feet in elevation. Due to the tilting of the Indo-Australia Plate, Bangladesh gains temporary relief from the steady sinking it has experienced the past few years. And the tsunami likely to race northward will not come their way because the waters from the Bay of Bengal will be rushing into the South China Sea, and there clashing to push north. If the loss of 40 feet in elevation is not devastating to the Philippines, it is to the coastline of southern Burma, Tailand, and Cambodia, which have vast areas that will suddenly and permanently be flooded.
ZetaTalk ™ February 19, 2011
“Where the 7 of 10 sinking will flood the tip of Vietnam south of Ho Chi Minh City, and a strip of land just to the north of Phnom Penh in Cambodia, and the area around Bangkok in Thailand”