Look for Changes in the Ground
The ground itself often provides the earliest clues of instability. Be vigilant for new cracks appearing in the soil, on pavements, or on roads. These are often called tension cracks and may run parallel to the slope. Another critical sign is bulging
ground, especially at the base of a hill. This indicates that earth is being pushed outwards by immense pressure from above. Also, pay attention to tilting objects that should be stable. Trees, utility poles, and fences that are suddenly leaning could signal that the ground beneath them is shifting. Small, seemingly insignificant slides or flows of earth can be precursors to a much larger event.
Watch for Water-Related Signs
Water is a primary trigger for most monsoon landslides. Therefore, changes in how water behaves in your vicinity are a major red flag. Look for new springs, seeps, or patches of saturated ground in areas that are usually dry. If you live near a stream or channel, be alert for any sudden increase or decrease in water flow. A sudden drop in water levels could mean a blockage has occurred upstream from a small slide, creating a dam that could burst. Conversely, a rapid increase in water levels, particularly if the water changes from clear to muddy, indicates that soil and debris are already washing away upstream.
Check for Structural Stress in Buildings
Your home can also show signs of geological stress. If doors or windows that previously worked fine suddenly stick or jam for the first time, it could mean the building's foundation is tilting or shifting. Look for new or expanding cracks in plaster, tile, brickwork, or concrete foundations. Similarly, if you notice outside walls, stairways, or walkways beginning to pull away from the main structure, it is a serious warning sign that the ground supporting the building is moving. Even broken underground utility lines can be an indicator of ground movement.
Listen for Unusual Sounds
Sometimes, the first warning of a landslide is not something you see, but something you hear. Stay alert for unusual noises, especially during and after heavy rainfall. A faint, low rumbling sound that gradually increases in volume can signal an approaching debris flow. The sound of trees cracking or boulders knocking together are other distinct indicators of moving earth and debris. Many survivors of past landslides have reported hearing these types of sounds just before the event, often when visibility is low during a storm or at night.
Know Your Area and What to Do
Awareness is your first line of defense. The Brihanmumbai Municipal Corporation (BMC) and the Geological Survey of India (GSI) have identified numerous landslide-prone areas across the city, especially in the eastern suburbs like Ghatkopar, Vikhroli, and Kurla, as well as parts of Malabar Hill. These are often areas with steep slopes and dense, informal settlements. If you live in or near one of these designated zones, be extra vigilant. If you spot any of the warning signs mentioned, do not hesitate. The safest course of action is to move away from the path of a potential landslide as quickly as possible. Evacuate immediately and inform the BMC's disaster management cell or local police. Authorities repeatedly issue warnings to residents in high-risk zones, and taking these advisories seriously is crucial.
