Flooding in Chiang Mai what you need to know (Updated)
Flooding is a major concern in Thailand, particularly during the monsoon season, which occurs from May to October. This season produces significant rain, which can overwhelm drainage systems. As a result, many areas are experiencing severe floods, which disrupt everyday life and damage property. Infections caused by water can represent significant health threats during these occurrences.
Chiang Mai, in northern Thailand, is especially vulnerable to flooding during the monsoon. Surrounded by mountains and rivers, the city faces unique challenges. Prolonged rainfall, especially in July and August, can quickly swell local rivers like the Ping River. Understanding the hazards and taking preventative steps is critical for residents and visitors to navigate this lovely city during the rainy season.
Current situation of flooding in Chiang Mai 2024
As of the end of October 2024, there has been no significant flooding reported in Chiang Mai, as water levels have receded and weather conditions have stabilised.
The flooding situation in Chiang Mai and surrounding areas remains critical as of mid-September 2024, following heavy rainfall linked to the ongoing monsoon season and the remnants of Typhoon Yagi.
As of September 25, 2024, the flooding in Chiang Mai remains serious due to the rising Ping River. The water level at Nawarat Bridge reached 4.45 meters this morning, well above the critical level of 3.7 meters. Several low-lying areas, including Ban Pa Phrao Nok, are already flooded from the river overflow. Although the water levels are high, officials say the flooding is stable and not worsening for now.
The Chiang Mai Provincial Disaster Prevention and Mitigation Office is assisting vulnerable groups like the older people and bedridden. Emergency plans are in place, with food and shelter ready if needed. Officials expect water levels to recede in 1-2 days if no more rain falls after tonight.
Current Flooding Impact
Affected areas: In Chiang Mai, Mae Ai and Fang districts were severely impacted, with 2,978 households affected. In Chiang Rai, the districts of Mae Sai, Mae Chan, Mae Fah Luang, and Mueang saw significant disruption, affecting 24,925 households. Emergency shelters have been set up in both provinces—seven in Chiang Mai and 22 in Chiang Rai—to support displaced residents.
Casualties: The disaster has resulted in 16 deaths, with causes including landslides, drowning, and being swept away by floodwaters. Chiang Mai reported six fatalities and three injuries, while Chiang Rai recorded 10 deaths and 133 injuries. A total of 417 medical personnel were impacted across both provinces.
Infrastructure damage: In Chiang Mai, the Ban Tha Makeng Subdistrict Health Promoting Hospital was damaged and remains closed. In Chiang Rai, five Subdistrict Health Promoting Hospitals were affected but continue to operate. The flood and landslide events disrupted essential services, although emergency teams are actively working to restore health and public services.
For more information, check out our recent news articles about flooding in Chiang Mai:
- Floods and landslides in Chiang Mai and Chiang Rai claim 16 lives
- Landslide in Chiang Mai leaves 2 dead, and many stranded
- Chiang Mai landslide death toll rises to 6, 2 more missing (video)
- Flooding in Pai: What you need to know
Overview of flooding in Chiang Mai
Chiang Mai’s geographical location, in a valley surrounded by mountains, makes it extremely vulnerable to floods, especially during the monsoon season. The Ping River flows through the city and often overflows during heavy rainfall.
In September 2022, the city faced significant floods caused by an extreme monsoon peak, flooding nearly 1,000 houses in the Muang area. Key places like the Night Bazaar and main roadways were overflowing, while water levels at vital sites like Nawarat Bridge exceeded acceptable limits. Local officials responded quickly, delivering emergency supplies and strengthening flood defences.
Looking ahead, climate change is expected to increase the frequency and severity of extreme weather occurrences in the region. Residents and tourists should exercise caution during the rainy season since urbanisation has an impact on natural drainage systems. Staying updated about weather conditions and local flood alerts is critical to ensuring safety in this beautiful but vulnerable city.
Causes of flooding
Several important variables contribute to flooding in Chiang Mai, which worsens during the monsoon season. Recognising these factors allows both locals and visitors to take appropriate measures throughout the rainy season. This knowledge can lead to increased preparations for potential flooding.
- Monsoon rains: The monsoon season brings heavy rain that can last for hours. These downpours quickly fill rivers and streets, causing flooding.
- River overflow: The Ping River often overflows during intense rainfall, allowing water to spread into nearby areas.
- Inadequate drainage systems: Chiang Mai’s drainage system often struggles to manage large amounts of rain. This causes flooding in streets and neighbourhoods.
Impact on local communities
Flooding can have serious effects on local communities in Chiang Mai. Understanding these impacts helps residents take proactive measures to protect themselves and their property.
- Damage to property: Floodwaters can overwhelm homes, causing damage to the walls, flooring, and personal belongings. To reduce damage, residents should move power lines and equipment above flood levels and use water-resistant materials when renovating.
- Displacement of residents: Severe flooding may force people to evacuate their homes. It’s important for residents to identify secure escape routes and emergency shelters in advance.
- Economic effects: Local businesses can experience significant financial losses due to flooding. Business owners should create flood response plans and consider flood insurance to safeguard their investments.
Emergency response measures
Effective emergency response is crucial for managing flooding in Chiang Mai. Both government efforts and community initiatives play important roles in preventing and responding to flood situations.
- Government efforts: The Thai government has set up measures to monitor weather patterns and issue alerts during heavy rain. Local authorities work to maintain drainage systems, build flood barriers, and provide emergency services for evacuations.
- Community initiatives: Community involvement is crucial for successful flood prevention and response. Many neighbourhoods can form volunteer groups to clear debris from drains and gutters. Participating in these initiatives strengthens community resilience against flooding.
Safety precautions and tips
Being prepared for flooding is essential for your safety and well-being. Here are some important precautions to take before, during, and after a flood.
Before a flood
Start by checking drainage systems around your home to ensure they are clear of debris. If possible, elevate your home’s foundation or use sandbags as a temporary barrier against rising water. Prepare an emergency kit that includes bottled water, non-perishable food, medications, flashlights, and a first-aid kit. Get to know yourself with the surrounding evacuation paths so you can quickly reach a safe location if needed.
During a flood
Stay informed by monitoring local news for updates on weather conditions. If water levels rise quickly, move to higher ground immediately. Avoid walking or driving through flooded areas, as even six inches of moving water can knock you down.
After a flood
Wait for safety announcements before returning home. Only go back when authorities confirm it is safe. Once you are back, carefully assess your property for structural damage while wearing protective clothing. Document any damage by taking photos and making lists of affected items for your insurance claims. Being proactive can help ensure your safety and recovery.
Flooding in Chiang Mai is a serious concern, especially during the monsoon season. Understanding the geography and causes can help you prepare and reduce risks. Maintaining effective drainage systems and raising home foundations are essential steps. Staying informed through local news can also minimise the impact on your property and well-being.
For essential tips on navigating Thailand’s rainy season, check out our article on how to survive Thailand’s rainy season 2024.
