Changing Ecology and Cultural Landscape of India’s Major Lakes
India’s lakes are increasingly becoming focal points of discussions related to climate change, biodiversity conservation, wetland degradation, glacial hazards, migratory birds, tourism, livelihood security and urban transformation. Recent developments associated with lakes such as Sambhar Lake, Chilika Lake, Lonar Lake, Roopkund Lake, Dal Lake and Salt Lake (Bidhannagar) reflect the diverse environmental and socio-economic challenges confronting India’s freshwater, saline, glacial and wetland ecosystems.5
The Asian Waterbird Census (AWC) 2026 recorded nearly 2.3 lakh migratory waterbirds belonging to 47 species at Rajasthan’s Sambhar Lake. The lake witnessed a major recovery in bird population after earlier ecological setbacks. Flamingos dominated the count, including:
The huge congregation turned parts of the saline wetland visibly pink.
7Sambhar Lake is:
Migratory birds arrive from:
Despite the recovery, several threats remain:
The lake remains vulnerable after the 2019 avian botulism outbreak, which caused the death of over 20,000 birds.
7Recent reports indicate that the depth of Chilika Lake, Asia’s largest brackish water lagoon, is decreasing due to massive sediment deposition.Key observations include:
The Odisha government plans ecological restoration with support from IIT Madras.
The traditional Chilika red rice (Bankia) has emerged as an example of climate-resilient agriculture.Importance:
The rice ecosystem also supports the Fishing Cat, declared the lake’s ambassador in 2020.
Chilika supports:
It also serves as:
Maharashtra’s Lonar Lake, formed by a meteorite impact, witnessed a rise in water level by approximately 15–20 feet due to continuous freshwater inflow from perennial springs.Consequences include:
Environmentalists fear that freshwater mixing could alter the lake’s rare saline ecology.
5Lonar Lake is globally important because:
The Bombay High Court directed filing of a PIL to examine ecological risks.
Roopkund Lake, situated at an altitude of about 5,020 metres, is famous for:
Studies suggest skeletons belong to different time periods and ancestries.
7Roopkund represents:
It also highlights the tourism-conservation balance in fragile Himalayan zones.
Dal Lake in Srinagar hosted the inaugural Khelo India Water Sports Festival.Events included:
More than 400 athletes participated from across India.
6The event highlights:
Dal Lake also supports:
The Himalayas are witnessing rising threats from Glacial Lake Outburst Floods (GLOFs) due to:
India’s National Disaster Management Authority (NDMA) has prioritised monitoring of high-risk lakes.
The article highlights:
| Type | Characteristics |
|---|---|
| Supraglacial Lakes | Form on glacier surfaces |
| Moraine-dammed Lakes | Blocked by loose debris and highly unstable |
Major GLOF disasters such as:
demonstrate the vulnerability of Himalayan ecosystems.
Kolkata’s Salt Lake township (Bidhannagar), once regarded as a model planned urban settlement, is witnessing:
The transformation reflects broader trends of:
Issues highlighted include:
At the same time, Salt Lake remains one of Kolkata’s greenest urban regions.
Indian lakes perform critical functions:
| Ecological Role | Socio-economic Role |
|---|---|
| Biodiversity conservation | Tourism |
| Flood moderation | Fisheries |
| Groundwater recharge | Agriculture |
| Carbon sequestration | Livelihood support |
| Climate regulation | Cultural identity |
| Feature | Details |
|---|---|
| Location | Rajasthan |
| Type | Inland saltwater lake |
| Importance | Largest inland salt lake in India |
| Ramsar Status | Yes |
| Feature | Details |
|---|---|
| Location | Odisha |
| Type | Brackish water lagoon |
| Ramsar Recognition | India’s first Ramsar Site (1981) |
| Important Species | Irrawaddy Dolphin |
| Feature | Details |
|---|---|
| Location | Maharashtra |
| Origin | Meteorite impact crater |
| Geological Setting | Deccan Trap basalt |
| Feature | Details |
|---|---|
| Location | Srinagar, Jammu & Kashmir |
| Famous For | Houseboats, shikaras, floating gardens |
| Feature | Details |
|---|---|
| Location | Uttarakhand |
| Type | Glacial lake |
| Famous For | Human skeleton remains |
| Term | Meaning |
|---|---|
| Ramsar Site | Wetland of international importance |
| Central Asian Flyway | Major migratory bird route |
| GLOF | Glacial Lake Outburst Flood |
| Cryosphere | Frozen components of Earth |
Updated – 07 May 2026 | News Sources:
Times of India – Sambhar Census,
Times of India – Chilika Depth,