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Nainital: The beautiful lake city Nainital is facing an unexpected crisis: rats are digging tunnels beneath roads, slopes, and the retaining walls around Naini Lake. Locals and experts say that these burrows could lead to landslides, wall collapse, and health dangers unless immediate steps are taken.
The problem is visible in many places. Walls along Mallital, Pant Park, Boat House Club, Band Stand, and Capital Cinema are showing cracks and signs of erosion. Rat holes and hollowed-out ground stretch across these zones, weakening the foundation. The famed lake walls are especially at risk.
Many factors are involved in rat infestation
The rise in rat numbers seems due to a mix of factors. One is poor waste management: spilled food, open trash bins near parks and touristic spots make easy meals for rodents. Another is climate change — warmer temperatures and changing weather patterns have made environments more favorable for rats to breed and survive. Urban expansion and construction (often near slopes or lake walls) have left more gaps and places for rats to burrow.
Narendra Singh Chauhan, Secretary of the Nainital Boat Owners’ Committee, points to a surprising cause, “The widespread sale of sweet corn (bhutta) near Pant Park and lakeside has become a feeding ground for rodents. The abundant food waste left behind has led to an unprecedented explosion in their numbers.
He adds that rat populations surged notably after the COVID-19 period, when human activity reduced and waste management suffered.
Local municipal bodies are pushing for better waste disposal systems
Authorities are beginning to act. The Irrigation Department is looking into repairing lake walls. Local municipal bodies are pushing for better waste disposal systems, frequent inspection of weak structures, and removing infested debris. Some experts also suggest using eco‑friendly rodenticides, sealing gaps, and raising public awareness about hygiene.
Nainital’s lake walls are historic and irreplaceable; some shown visible cracks and erosion. If nothing is done, rat‑filled burrows under these structures might lead to a major collapse. Landslides could become more frequent, putting lives and property at risk. Administrative response has also started. SDM Pramod Kumar said, “Our teams will actively inspect the affected areas. Ensuring the safety of roads and buildings is our top priority.”
Some business owners report damage to merchandise and foundations
Residents say the damage is already evident. Retaining walls near shops and houses have hollow patches, cracks, and eroded surfaces. Some business owners report damage to merchandise and foundations. The road next to a house in Mallital has reportedly been dug out by rodents. Prof. Lalit Tewari, a Botany professor says, “Rodents seek warmer spaces when their natural habitats become unlivable. Climate change and urban development may be forcing them into human settlements.” Indeed, climate shifts and warmer temperatures can favor rat breeding, extend their survival, and push them into developed areas.
Experts warn deeper impact
Geologists warn that the impact goes deeper than visible cracks. Dr. B. D. Patni, a geologist, explains rat burrowing undermines ground stability, “Rats are hollowing out populated areas and lake fronts. Water leaking through these tunnels erodes soil internally, leading to subsidence and landslides, particularly in sloped terrain like Nainital.”
Because the city is built on steep slopes, any loss of internal soil strength can destabilize foundations, especially under heavy rain or seismic activity.
Health risks for the locals
Health risks are also serious. Rat bites, if untreated, can lead to infections, allergies, or even rabies. Hospitals treat bites with tetanus and anti-rabies shots. The increase in rat-human encounters is a warning signal for public health.
To control this menace, experts recommend:
Strict food waste management (sealed bins, regular disposal)
Cleaning public spaces and removing litter
Eco-friendly rodent control methods and sealing entry points
Rapid repair of cracks and reinforcing vulnerable walls
Public awareness campaigns to reduce attractants like open food stalls
Without coordinated action, Nainital’s iconic lake walls, hillside homes, and roads may suffer serious collapse.
