Under the Ramsar Convention, wetlands are defined as: "areas of marsh, fen, peatland or water, whether natural or artificial, permanent or temporary, with water that is static or flowing, fresh, brackish or salt, including areas of marine water the depth of which at low tide does not exceed six metres."
Wetlands include a vast diversity of habitats — from freshwater lakes and rivers to coastal lagoons, mangroves, rice paddies, peatbogs, and even coral reefs down to 6 m depth.
| Category | Sub-types (Examples) | India Examples |
|---|---|---|
| Marine / Coastal | Permanent shallow marine waters, estuaries, mangroves, coral reefs, coastal lagoons | Sundarbans, Chilika, Pichavaram |
| Inland / Continental | Permanent rivers, oxbow lakes, freshwater marshes, peatlands, alpine wetlands | Surha Taal, Loktak, Keoladeo |
| Human-made | Aquaculture ponds, irrigation channels, reservoirs, rice paddies, salt pans | Harika Wetland, Pong Dam |
| Parameter | Detail |
|---|---|
| Official Name | Jai Prakash Narayan Bird Sanctuary |
| Popular Name | Surha Taal ("Surha" = big-mouthed / Bhojpuri; "Taal" = lake) |
| Location | Ballia District, Uttar Pradesh (25°51′N 84°10′E) |
| Wetland Type | Natural oxbow lake (former meander of the Ganga River) |
| Area | 34.32 km² (3,432 hectares) — approx. 1,528 ha core sanctuary |
| Established as Sanctuary | 1991 — by Uttar Pradesh Forest Department |
| Ramsar Designation | 5 June 2026 — India's 100th Ramsar Site |
| Ecoregion | Middle Ganga Plains (Indo-Gangetic Plain) |
The Ramsar Convention is the only global treaty dedicated to one specific ecosystem type (wetlands). It is NOT a UN body — it is an intergovernmental treaty with its secretariat hosted by IUCN in Gland, Switzerland. Depositary: UNESCO.
| Parameter | Detail |
|---|---|
| Full Name | Convention on Wetlands of International Importance especially as Waterfowl Habitat |
| Signed | 2 February 1971 — Ramsar, Iran |
| Came into Force | 21 December 1975 |
| India's Accession | 1 February 1982 |
| Contracting Parties | 172 countries (as of 2026) |
| Total Ramsar Sites Globally | 2,520+ sites covering 2.5 million km² |
| Secretariat | Hosted by IUCN, Gland, Switzerland |
| Depositary | UNESCO (but Ramsar is NOT part of UN system) |
| World Wetlands Day | 2 February every year (commemorates signing date) |
| COP Frequency | Every 3 years · COP15 held July 2025, Victoria Falls, Zimbabwe |
| Mission (3 Pillars) | Wise Use · Designation of Ramsar Sites · International Cooperation |
| Law / Rule | Year | Key Provision |
|---|---|---|
| Environment (Protection) Act | 1986 | Parent statute for Wetland Rules; empowers MoEFCC to frame wetland-specific regulations |
| Wetlands (C&M) Rules | 2010 | First-ever specific guidelines for wetlands; framed under EPA 1986 (NOT directly from Ramsar Convention) |
| Wetlands (C&M) Rules | 2017 | Replaced 2010 Rules; establishes State Wetland Authorities; regulates human activities; current operative law |
| Wildlife Protection Act | 1972 | Provides legal base for bird sanctuaries; Surha Taal is a WPA-notified sanctuary |
| National Plan for Conservation of Aquatic Ecosystems (NPCA) | 2015–16 | Centrally Sponsored Scheme for wetland and lake conservation; successor to NLCP and NWCP |
| Article 48A | — | DPSP: State shall protect and improve the environment |
| Article 51A(g) | — | Fundamental Duty: protect and improve the natural environment |
| Article 51(c) | — | DPSP: Foster respect for international law and treaty obligations (India's Ramsar commitments flow from this) |
UPSC has asked whether the Wetland Rules 2010 were framed "based on the Ramsar Convention." The correct answer is NO — they were framed under the Environment (Protection) Act, 1986 (domestic law), though they reflect India's Ramsar commitments. This is a classic trap.
Wetlands International is an independent, not-for-profit NGO headquartered in Ede, the Netherlands. It is NOT a UN body, NOT an intergovernmental organisation, and NOT the Ramsar secretariat. UPSC has directly tested this distinction.
| Parameter | Detail | Significance |
|---|---|---|
| Lake Type | Natural oxbow lake (oval-shaped) | Formed by abandoned meander of Ganga River |
| Ecoregion | Middle Ganga Plains | Located along Indo-Gangetic Alluvial Plain margins |
| District | Ballia, Uttar Pradesh | ~17 km north of Ballia city; near Ganga–Ghaghra confluence |
| Primary Outlet | Kathar Nala (~23 km) | Drains into Ganga River; sometimes reverses during Ganga/Sarayu floods |
| Water Source | Rainwater-fed + 3 freshwater inflow channels | Seasonal variation — maximum extent in Aug–Sep (monsoon) |
| Surrounding Land Use | Agricultural fields, rice paddies | Rice cultivation + fishing = traditional livelihoods |
| Landscape Types | Floodplains, marshes, seasonally flooded areas, rice paddies | High habitat diversity supports avian biodiversity |
| Dominant Weed | Eichhornia crassipes (Water Hyacinth) | Invasive species — major threat to water quality and biodiversity |
| Rivers in Context | Ganga (south), Ghaghra/Sarayu (north) | Ballia sits at the confluence of these two major rivers |
Surha Taal is a perennial lake — it never freezes and holds water year-round, though it expands significantly during monsoon (August–September). The flow of Kathar Nala sometimes reverses during peak Ganga floods, bringing additional water into the lake.
Surha Taal is an oxbow lake in the Middle Ganga Plain connected to the Ganga via Kathar Nala. It is located in Ballia district, UP — not to be confused with Patna Bird Sanctuary (Etah, UP) or Shekha Jheel (Aligarh, UP), which were the 98th and 99th Ramsar sites respectively.
| Bird / Species | Type | UPSC Significance |
|---|---|---|
| Greylag Goose | Winter migratory (Siberia/Central Asia) | Indicator of Central Asian Flyway |
| Northern Pintail | Winter migratory | Common MCQ species for Ramsar bird data |
| Common Teal | Winter migratory | Anatidae family — most numerous at site |
| Bar-headed Goose | Winter migratory (Tibetan Plateau) | Highest-altitude flying bird — UPSC favourite |
| Sarus Crane (Grus antigone) | Resident — breeds here | World's tallest flying bird; UP state bird; Vulnerable (IUCN) |
| Herons & Cormorants | Resident | Ardeidae + Phalacrocoracidae — dominant families |
| Fishing Cat (Prionailurus viverrinus) | Mammal — resident | Vulnerable (IUCN); feeds on fish at wetland margin |
| Species | Category | Conservation Status |
|---|---|---|
| Wallago attu (Boal / Freshwater shark) | Fish | Vulnerable (IUCN) |
| Bagarius bagarius (Goonch catfish) | Fish | Vulnerable (IUCN) |
| Eichhornia crassipes (Water Hyacinth) | Dominant weed / Invasive | Major threat — reduces dissolved oxygen, impedes bird habitat |
| Fish families: Cypriniformes (23 spp), Siluriformes (12 spp), Perciformes (13 spp) | Fish diversity | Critical livelihood base for local fishing communities |
Surha Taal is a key wintering ground on the Central Asian Flyway (CAF) — one of the world's major bird migration routes stretching from Siberia and Central Asia to the Indian subcontinent. India hosts millions of migratory birds on this flyway every winter. Other important CAF wetlands in India: Keoladeo (Rajasthan), Chilika (Odisha), Harike (Punjab), Loktak (Manipur).
Peak winter congregation at Surha Taal: approximately 50,000 waterfowl (Forest Department estimate). Year-round resident bird count: approximately 10,000 birds of 15+ species. During migration season, this swells to an estimated 2 lakh birds.
| Rank | Country | No. of Sites |
|---|---|---|
| 1 | United Kingdom | 176 |
| 2 | Mexico | 144 |
| 3 | India | 100 |
| — | Global Total | 2,520+ across 172 countries |
| — | Global Area | ~2.5 million km² (larger than Mexico) |
| State | No. of Sites | Notable Site |
|---|---|---|
| Tamil Nadu | 20 (highest) | Vedanthangal, Pichavaram, Gulf of Mannar |
| Uttar Pradesh | 13 (post Surha Taal) | Sur Sarovar, Upper Ganga River, Surha Taal |
| Odisha | 6 | Chilika Lake, Bhitarkanika Mangroves |
| Punjab | 6 | Harike Wetland, Keshopur-Miani |
| Rajasthan | 4+ | Keoladeo, Sambhar Lake, Siliserh (2025) |
| West Bengal | 2 | Sundarbans, East Kolkata Wetlands |
| Manipur | 1 | Loktak Lake (Montreux Record) |
| Sikkim, Jharkhand, Chhattisgarh | 1 each | First-ever designations in 2025 |
| Category | Site | State |
|---|---|---|
| First sites (1981) | Chilika Lake + Keoladeo NP | Odisha + Rajasthan |
| Largest Ramsar site | Sundarbans Wetland (~4,230 km²) | West Bengal |
| Smallest Ramsar site | Renuka Wetland (~20 ha) | Himachal Pradesh |
| 100th Ramsar Site | Surha Taal (Jai Prakash Narayan BS) | Uttar Pradesh |
| State with most sites | Tamil Nadu — 20 sites | Tamil Nadu |
| State with 2nd most sites | Uttar Pradesh — 13 sites | Uttar Pradesh |
| Criterion | Description | Category |
|---|---|---|
| Criterion 1 | Representative, rare or unique wetland type in its biogeographic region | Type |
| Criterion 2 | Supports vulnerable, endangered or critically endangered species, or threatened ecological communities | Species |
| Criterion 3 | Supports populations of plant and/or animal species important for maintaining biodiversity | Species |
| Criterion 4 | Supports species at a critical stage in their life cycle, or during adverse conditions | Species |
| Criterion 5 | Regularly supports 20,000 or more waterbirds | Birds (numbers) |
| Criterion 6 | Regularly supports 1% of the individuals in a population of a waterbird species/subspecies | Birds (%) |
| Criterion 7 | Supports a significant proportion of indigenous fish subspecies, species, families; source of food/genetic diversity | Fish |
| Criterion 8 | Important food source for fish, spawning ground, nursery, or migration path | Fish |
| Criterion 9 | Supports 1% of the individuals in a population of a non-avian animal species dependent on wetlands | Animals |
Criteria 5 and 6 are the most commonly tested: Criterion 5 = 20,000 waterbirds (absolute number); Criterion 6 = 1% of global population of a species. Surha Taal meets Criteria 2 (Sarus Crane, Fishing Cat — Vulnerable), 4 (critical wintering ground), and 5 (peak winter count ~50,000 waterfowl).
A register of Ramsar sites where changes in ecological character have occurred, are occurring, or are likely to occur due to technological developments, pollution or human interference. It is maintained as part of the Ramsar List — inclusion does NOT remove a site from the Ramsar List.
Established: 1990
| Site | State | Listed Since | Reason |
|---|---|---|---|
| Keoladeo Ghana NP | Rajasthan | 1990 | Water shortage (Ajan Dam issue), invasive Prosopis juliflora |
| Loktak Lake | Manipur | 1993 | Pollution, deforestation, Ithai Barrage hydrological alteration |
Chilika Lake (Odisha) was placed on the Montreux Record in 1993 due to siltation blocking the river mouth. After successful restoration (new mouth opening, community fishery reforms, reduced siltation), it was removed from the Montreux Record in 2002 — the most celebrated wetland restoration in India.
| Site | State | Type | UPSC-Critical Fact |
|---|---|---|---|
| Chilika Lake | Odisha | Brackish coastal lagoon | Largest coastal lagoon in India; Irrawaddy dolphin (only Indian pop.); removed from Montreux 2002; core = Nalbana BS |
| Keoladeo Ghana NP | Rajasthan | Man-made wetland | India's 1st Ramsar site (1981); UNESCO WHS; wintering ground for Siberian crane (now functionally extinct at site); Montreux Record since 1990 |
| Loktak Lake | Manipur | Freshwater lake | Largest freshwater lake in NE India; famous Phumdis (floating islands); Sangai deer; Montreux since 1993 |
| Sundarbans | West Bengal | Mangrove delta | Largest Ramsar site in India; also UNESCO WHS + Tiger Reserve; Bengal tiger population |
| Vembanad-Kol | Kerala | Backwater lagoon | Longest lake in India; Nehru Trophy boat race; Kuttanad (below sea-level farming) within its basin |
| Sambhar Salt Lake | Rajasthan | Saline lake | Largest inland saltwater lake in India; habitat for flamingos; salt production |
| Hokera Wetland | J&K | Freshwater marsh | Provides critical wintering habitat; feeds into Dal Lake system |
| East Kolkata Wetlands | West Bengal | Human-made (sewage-fed) | Unique sewage-fed aquaculture system; city's natural sewage treatment; urban Ramsar site |
| Surha Taal | Uttar Pradesh | Oxbow lake (freshwater) | India's 100th Ramsar Site · 5 June 2026 · World Environment Day · Jai Prakash Narayan BS · UP's 13th site |
Keoladeo Ghana NP was designated as India's first Ramsar Site in 1981 — the same year as Chilika Lake. Both were designated together. Do NOT say "Chilika was India's first" — it was one of India's first two sites, both designated simultaneously in 1981.
| Concept / Institution | Connection to Topic | Exam Relevance |
|---|---|---|
| Central Asian Flyway (CAF) | Surha Taal is a key wintering ground on this flyway; birds arrive from Siberia & Central Asia | GS3 Environment; Prelims bird migration MCQs |
| Convention on Migratory Species (CMS / Bonn Convention) | Complements Ramsar for protecting migratory birds along flyways; India is a party | Distinguish: CMS = migratory species; Ramsar = wetland habitats |
| National Plan for Conservation of Aquatic Ecosystems (NPCA) | Central scheme for conservation of Ramsar sites and other wetlands; funds management plans | Successor to NLCP and NWCP; MoEFCC scheme |
| Wetland Rules 2017 | Establishes State Wetland Authorities for local governance; regulates activities in & around notified wetlands | 2017 Rules replaced 2010 Rules — exam often asks this |
| Wetlands International | Maintains Ramsar Sites Information Service database; provides data on Surha Taal biodiversity | NOT a UN body; NOT the Ramsar secretariat — classic trap |
| BirdLife International | Global NGO; maintains Key Biodiversity Areas (KBA) data; Surha Taal is a designated KBA | Important for IBA (Important Bird Area) distinction from KBA |
| National Biodiversity Authority (NBA) | Works with CPCB and State Forest Depts for integrated wetland management | Biodiversity Act 2002 linkage |
| Wetland Mitras | Community volunteers recognised for wetland conservation; MoEFCC programme | Government recognised programme — current affairs hook |
| Global Wetland Outlook 2025 | Ramsar STRP flagship report — states 1/5 of world's wetlands are in poor state; >1/3 wetland area lost since 1970 | COP15 context — background for MCQs on wetland trends |
| Wildlife Protection Act 1972 | Surha Taal is a WPA-notified bird sanctuary; Schedule-I species (Sarus Crane) protected | Sanctuary status pre-dates and complements Ramsar designation |
The theme of World Wetlands Day 2026 (2 February 2026) was: "Wetlands and Traditional Knowledge: Celebrating Cultural Heritage." This was adopted at Ramsar COP15 (July 2025, Victoria Falls, Zimbabwe).
Ramsar = wetland ecosystems · CBD (Convention on Biological Diversity) = biodiversity broadly · CMS/Bonn = migratory species · CITES = trade in species · Paris Agreement = climate. UPSC often asks to match convention to purpose — Ramsar is the only one focused exclusively on wetlands.
India's 100th Ramsar Site designated on World Environment Day. The Jai Prakash Narayan Bird Sanctuary (Surha Taal), Ballia district, Uttar Pradesh, was formally designated as India's 100th Ramsar Site on 5 June 2026. PM Narendra Modi announced the milestone on X (Twitter), calling it "an important achievement in India's efforts to protect wetlands and preserve biodiversity." MoEFCC described it as a "proud milestone in India's conservation journey." India now stands 3rd globally (after UK: 176, Mexico: 144) and 1st in Asia by number of Ramsar sites.
World Wetlands Day 2026 — India's Ramsar count at 98. On World Wetlands Day 2026, MoS for Environment Kirti Vardhan Singh stated India had grown from 26 Ramsar sites in 2014 to 98 sites. Six states were felicitated for new Ramsar sites: Bihar, Gujarat, Rajasthan and Uttar Pradesh. The programme also recognised Wetland Mitras — community volunteers for wetland conservation. WWD 2026 theme: "Wetlands and Traditional Knowledge: Celebrating Cultural Heritage."
Uttar Pradesh becomes India's 2nd-highest Ramsar state (13 sites). Earlier in 2026, Shekha Jheel Bird Sanctuary (Aligarh district, UP) was designated as India's 99th Ramsar Site in April 2026, and Patna Bird Sanctuary (Etah district, UP) was the 97th in January 2026. Cumulatively since February 2026, UP received three new Ramsar designations within a few months, bringing its total to 13 — making it the 2nd-highest state after Tamil Nadu (20 sites).
Ramsar COP15 concluded at Victoria Falls, Zimbabwe (23–31 July 2025). Key outcomes: New resolutions on wetland restoration, protection of peatlands, and climate-wetland linkages. India's resolution on sustainable lifestyles was adopted. COP15 also recommended including traditional and local knowledge in Ramsar National Committees. Global Wetland Outlook 2025 presented: over 1/3 of global wetland area lost since 1970; wetlands disappearing 3× faster than forests; over 1/5 of world's wetlands in poor condition.
Supreme Court PIL on Wetland Rules 2017. A PIL challenged the exclusionary definition of wetlands in the Wetlands Rules 2017, arguing it creates disharmony with India's Ramsar Convention obligations and violates Article 51(c) of the Constitution (foster respect for international law). The SC agreed to examine the validity of the definition. Additionally, a previous SC order directed protection of ~30,000 additional wetlands building upon earlier protection of 2,01,503 wetlands identified in the National Wetland Inventory.
For UPSC 2026: 5 June 2026 = India's 100th Ramsar Site (Surha Taal) · World Environment Day = 5 June · State count: Tamil Nadu (20) > UP (13) · India = 1st in Asia, 3rd globally · COP15 July 2025 Victoria Falls · WWD 2026 theme: Traditional Knowledge.
| Statement | T/F | Reason / Correct Fact |
|---|---|---|
| The Ramsar Convention was signed on 2 February 1971 and came into force in the same year. | ❌ | Signed in 1971 but came into force on 21 December 1975 |
| Wetlands International is an intergovernmental organisation under UNEP that maintains the Ramsar Sites database. | ❌ | Wetlands International is an independent NGO (Ede, Netherlands) — NOT a UN body, NOT intergovernmental, NOT the Ramsar secretariat |
| India joined the Ramsar Convention as a contracting party in 1982. | ✅ | India acceded on 1 February 1982 |
| The Wetlands (Conservation & Management) Rules 2017 were framed based on recommendations of the Ramsar Convention. | ❌ | Framed under Environment (Protection) Act 1986 (domestic law) — not directly based on Ramsar recommendations |
| A site included in the Montreux Record is removed from the Ramsar List. | ❌ | Montreux Record is maintained as part of the Ramsar List — site remains on Ramsar List simultaneously |
| Surha Taal is an oxbow lake in the Middle Ganga Plains connected to the Ganga by Kathar Nala. | ✅ | Correct — oxbow lake, Ballia UP, Kathar Nala ~23 km outlet to Ganga |
| At the time of joining the Ramsar Convention, a contracting party must designate at least two wetlands. | ❌ | Must designate at least ONE wetland at the time of joining |
| Tamil Nadu has the highest number of Ramsar Sites in India as of June 2026. | ✅ | Tamil Nadu leads with 20 sites |
| The Ramsar Secretariat is hosted under the United Nations Environment Programme (UNEP). | ❌ | Secretariat hosted by IUCN in Gland, Switzerland; Ramsar is NOT part of the UN system |
| Chilika Lake was the only Indian Ramsar site to have been placed on and removed from the Montreux Record. | ✅ | Placed 1993, removed 2002 after successful restoration — correct |
The Ramsar Convention is frequently, but incorrectly, described as a UN Convention. It is an intergovernmental treaty whose depositary is UNESCO, but Ramsar itself is NOT part of the UN system. The secretariat is at IUCN, Gland, Switzerland.
Many students say "Chilika Lake was India's first Ramsar site." Correct answer: Both Chilika Lake AND Keoladeo Ghana NP were designated together in 1981 — India's first two Ramsar sites simultaneously. Neither can claim sole priority.
Order of UP's 2026 additions: 97th = Patna Bird Sanctuary (Etah, Jan 2026) + Chhari-Dhand (Gujarat) = 98th · 99th = Shekha Jheel Bird Sanctuary (Aligarh, Apr 2026) · 100th = Surha Taal / Jai Prakash Narayan BS (Ballia, 5 June 2026). Do NOT confuse Patna BS (Etah district, UP) with the city of Patna in Bihar.
UPSC has tested: "The Wetland Rules 2010 established State Wetland Authorities." This is WRONG — State Wetland Authorities were established under the 2017 Rules, which replaced the 2010 Rules. The 2010 Rules did not provide for State-level authorities.
A wetland needs to meet ANY ONE of 9 criteria (not all 9, not even a majority). The most commonly tested thresholds: Criterion 5 = 20,000 waterbirds; Criterion 6 = 1% of global population of a waterbird species.
Surha Taal is in Ballia district, NOT Balrampur or Bahraich (other UP districts). Ballia sits at the confluence of Ganga and Ghaghra/Sarayu rivers, bordering Bihar. The outlet Kathar Nala drains into the Ganga (not Ghaghra).
| Site | State | Milestone / Unique Fact |
|---|---|---|
| Chilika Lake | Odisha | Largest coastal lagoon; Irrawaddy dolphin; 1st Ramsar (1981); Montreux 1993 → removed 2002 |
| Keoladeo Ghana NP | Rajasthan | 1st Ramsar (1981); man-made; UNESCO WHS; Montreux since 1990 |
| Loktak Lake | Manipur | Largest NE India lake; Phumdis; Sangai deer; Montreux since 1993 |
| Sundarbans | West Bengal | Largest Ramsar site in India; UNESCO WHS; Tiger Reserve |
| Renuka Wetland | Himachal Pradesh | Smallest Ramsar site (~20 ha) |
| East Kolkata Wetlands | West Bengal | Urban sewage-fed aquaculture; unique wetland type |
| Surha Taal | Uttar Pradesh | 100th Ramsar Site · 5 June 2026 · World Environment Day |