Introduction
India’s coastline, stretching across approximately 7,500 kilometres and encompassing some of the most ecologically productive and densely populated land in the country, has been subject to dedicated environmental regulation since the Coastal Regulation Zone (CRZ) Notification of 1991. That original notification, issued under the Environment Protection Act 1986, was grounded in the recognition that coastal ecosystems, including mangroves, coral reefs, sand dunes, beaches, and estuaries, provide irreplaceable ecological services and that their proximity to the sea makes them particularly vulnerable to development-induced degradation. The notification established a framework of restrictions on construction and industrial activity within specified distances of the high-tide line, with more stringent protection in ecologically sensitive areas.
Over the thirty years since the 1991 notification, this framework has been periodically revised, and the direction of revision has been consistently, if not uniformly, toward accommodation of development interests rather than strengthening ecological protection. The CRZ Notification 2019, which replaced the 2011 notification, represents the most comprehensive such revision, expanding the range of permissible activities in ecologically sensitive coastal areas, reducing the no-development zone width in certain coastal communities, and streamlining the clearance process for tourism and hospitality infrastructure. These changes have been justified administratively as correcting overly rigid restrictions that prevented sustainable coastal development while providing no ecological benefit. Critics, environmental lawyers, and ecologists have characterised them as a systematic rollback of coastal protection orchestrated to benefit real estate and tourism development interests.
This article examines the legal architecture of the CRZ framework, the pattern of administrative recategorisation through successive notifications, the judicial response to coastal development controversies, and the structural pressures that continue to reshape coastal governance.
Legal Framework
The Environment Protection Act 1986’s Section 3 provides the central government with broad authority to take measures for protecting and improving environmental quality, including through restrictions on the siting of industries and the carrying out of processes and operations. The CRZ notifications are issued under this authority, making them subordinate legislation with the force of law but subject to review by constitutional courts for consistency with the parent statute and with fundamental rights.
The CRZ Notification 2019 establishes four principal CRZ categories. CRZ-I encompasses areas that are ecologically sensitive and geomorphologically important, including mangroves, coral reefs, sand dunes, mudflats, national parks, marine parks, sanctuaries, reserve forests, wildlife habitats, and heritage sites. CRZ-I is further divided into CRZ-IA, covering ecologically sensitive areas, and CRZ-IB, covering the intertidal zone between the Low Tide Line and the High Tide Line. CRZ-II covers areas within municipal limits that are substantially urbanised. CRZ-III covers rural areas, and CRZ-IV covers the water area from the Low Tide Line up to twelve nautical miles.
One of the most significant changes in the 2019 notification compared to its 2011 predecessor is the reduction of the No Development Zone (NDZ) in densely populated rural coastal communities from two hundred metres to fifty metres from the High Tide Line. This change affects communities in the Kerala, Karnataka, and Maharashtra coasts where traditional fishing communities live in close proximity to the sea. The rationale was to allow these communities to expand housing and improve sanitation infrastructure, but the same fifty-metre NDZ applies to any development in CRZ-III, including tourism and hospitality infrastructure, which had previously required compliance with the two-hundred-metre standard.
The expansion of permissible activities in CRZ-I has been more controversial. The 2019 notification permits the construction of roads and roads related infrastructure on stilts or pillars or in similar methods with the minimum possible obstruction in the intertidal zone for providing connectivity to islands. It also permits facilities for treatment of sewage, solid waste management, and desalination plants in CRZ-I areas with strict environmental safeguards. Critics have argued that these permissions, however well-intentioned in specific contexts, create legal precedents that developers exploit in contexts for which the permissions were not designed.
Judicial Developments
The Supreme Court’s engagement with coastal regulation has been extensive and occasionally contradictory. The Mumbai Coastal Road project, a massive infrastructure development along Mumbai’s western seafront involving reclamation of approximately ninety hectares of the Arabian Sea, has been the subject of prolonged litigation. Petitions challenging the project’s environmental clearance and CRZ compliance reached the Supreme Court, which permitted the project to proceed subject to conditions while directing that mangrove destruction be compensated. The court’s willingness to allow a project of this scale to proceed, despite documented impacts on coastal ecosystems and the livelihoods of fishing communities, has been cited by environmental lawyers as evidence of judicial deference to urban infrastructure imperatives.
The Bombay High Court has been considerably more assertive in mangrove protection. Its orders in PIL petitions on Mumbai’s mangroves have established that mangroves falling within CRZ-I must receive the most stringent protection, that any encroachment on mangrove areas requires immediate removal, and that the state government has a positive obligation to demarcate and protect all mangrove areas with the required permanent markers. The court established a Mangrove Cell within the Maharashtra government to oversee mangrove protection and has exercised continuing supervision over its functioning.
The Lakshadweep controversy of 2021 illustrates the intersection of coastal regulation and political contestation. Draft regulations proposed for Lakshadweep by the Administrator appointed by the central government included proposed amendments to the CRZ framework applicable to the islands that would have permitted new hotel and resort development in areas previously restricted. The proposals triggered significant opposition from the island’s overwhelmingly Muslim fishing population, who argued that the changes would displace traditional fishing communities and enable large-scale tourism development incompatible with the islands’ ecological sensitivity. While the most controversial proposals were not ultimately enacted, the episode demonstrated the political economy of CRZ regulation.
The Tamil Nadu coast has been the site of ongoing tension between beach restoration and industrial development. The Chennai High Court has heard petitions on beach sand mining, coastal erosion from infrastructure projects, and the impacts of the proposed IT corridor along the Chennai coast. Its orders have required Environmental Impact Assessments for coastal infrastructure projects and have restrained activities that would accelerate coastal erosion.
The NGT has been active in coastal regulation cases, particularly in relation to the High Tide Line measurement disputes. The HTL is the reference line from which CRZ protection distances are measured, and disputes about where precisely the HTL falls have significant consequences for whether particular plots of land fall within the regulated zone. The NGT has directed state governments to conduct fresh HTL demarcation surveys in several states where existing demarcations were found to be outdated or conducted without proper methodology.
Contemporary Issues and Analysis
The High Tide Line measurement dispute reveals a structural vulnerability in the CRZ framework. The HTL is not a fixed physical feature but a dynamic boundary that shifts with tidal patterns, seasonal variation, and the long-term trend of sea-level rise. The methodology for measuring the HTL, as specified in the 2019 notification, requires state governments to commission surveys using Permanent Benchmark-based methods. In practice, HTL demarcation surveys are conducted infrequently, are susceptible to political influence over the selection of survey points, and do not account for the progressive seaward advance of the HTL as sea levels rise due to climate change. Developers with interests in coastal land have in some documented instances sought to influence HTL demarcation to place their property outside the CRZ.
The tourism and hospitality sector’s pressure on coastal regulation is systematic and institutionally organised. Industry associations representing beach resorts, hotel developers, and marina operators have been consistent advocates before regulatory authorities for CRZ relaxations, framing such relaxations as necessary for coastal economic development and job creation. The administrative architecture of the Ministry of Tourism’s relationship with the Ministry of Environment on coastal development decisions creates structural incentives for accommodation of tourism development interests in CRZ regulation.
The mangrove ecosystem’s legal status has been clarified through successive judicial pronouncements but is under increasing practical pressure. Mangroves, classified as CRZ-IA in the 2019 notification, receive the most stringent legal protection. However, their identification and demarcation on the ground remains incomplete in several coastal states, creating opportunities for encroachment. Mumbai’s mangroves have been mapped with reasonable completeness following the Bombay High Court’s directions, but mangrove mapping in states like Andhra Pradesh, Odisha, and West Bengal remains incomplete.
Climate change introduces a new dimension to coastal regulation that the existing CRZ framework does not adequately address. Sea-level rise projections for the Indian coastline vary by region but consistently indicate that current HTL positions will be significantly displaced landward over coming decades. The Indian Ocean’s sea level is rising at a rate of approximately three to four millimetres per year, with acceleration projected. Current CRZ protection distances were calibrated without accounting for this dynamic. A coastal regulation framework adequate to the climate era would need to incorporate projected sea-level rise into HTL calculations and establish setback requirements that account for future coastal position rather than present position only.
Comparative and International Perspective
The European Union’s Integrated Coastal Zone Management (ICZM) Recommendation of 2002, while technically non-binding, established principles for EU member states’ coastal governance that have influenced practice significantly. ICZM principles include the adoption of an adaptive approach that allows for revision as understanding of coastal dynamics improves, a broad temporal perspective that accounts for the long-term dynamics of coastal processes, and a precautionary approach to development in areas of high uncertainty about future coastal position. These principles represent a more sophisticated regulatory philosophy than India’s distance-based CRZ approach, which sets fixed setback requirements without dynamic adjustment mechanisms.
The United States Coastal Zone Management Act 1972 establishes a cooperative federal-state framework for coastal management, under which states develop their own coastal management programmes with federal approval and financial support. The federal Office for Coastal Management provides technical guidance, funding for state programmes, and consistent baseline standards. The US approach, unlike India’s, allows for significant state-level variation within a nationally consistent framework, which may be more appropriate for India’s highly diverse coastal conditions than the current centrally-driven notification system.
The Philippines’ National Integrated Protected Areas System (NIPAS) includes significant provisions for coastal marine protected areas, and Philippine administrative courts have been active in enforcing coastal protection against real estate development. The Philippine experience of using mandatory Environmental Impact Assessments for all coastal development activities above a relatively low threshold provides a comparator for India’s more variable EIA coverage of coastal projects.
Practical and Policy Implications
The practical governance failure of India’s coastal regulation system is most visible in the proliferation of illegal or technically irregular coastal construction across multiple states. Kerala’s coastal zone has seen numerous violations of the CRZ notification, including hotels and resorts built within restricted zones that have been the subject of Court-ordered demolitions and regularisation proceedings. Goa’s coastal belt has been the site of some of the highest-profile CRZ violation cases in India, reflecting the combination of intense real estate pressure, high land values, and historically weak state enforcement. The enforcement deficit is structural: the State Coastal Zone Management Authorities, which bear primary responsibility for CRZ enforcement at the state level, are consistently understaffed, underfunded, and politically pressured to accommodate development interests.
The fishing community dimension of coastal regulation is regularly underweighted in policy discussions dominated by tourism and real estate interests. Traditional fishing communities, who are the primary intended beneficiaries of CRZ-III protection for their residential areas and access rights to beaches and fishing grounds, frequently find that their access to beaches is interrupted by hotel development, that their landing facilities are displaced by recreational marinas, and that coastal erosion accelerated by upstream construction eliminates the beaches that sustain their livelihoods.
Suggestions and Reforms
The CRZ notification should be amended to incorporate a climate-adaptive HTL definition, specifying that HTL surveys must incorporate Sea Level Change Scenarios consistent with the IPCC’s projections for the relevant coastal zone, and that protection setbacks must be calculated from the projected HTL position at the year 2050 rather than the current position.
A statutory Coastal Regulatory Authority, with independent expert members, permanent technical staff, and regional offices for each major coastal state, should replace the current arrangement of State Coastal Zone Management Authorities that operate under direct state government control and are therefore vulnerable to political pressure. The national authority should have inspection powers, enforcement authority, and the ability to impose financial penalties for CRZ violations without recourse to lengthy judicial proceedings.
Mangrove mapping should be completed under a national programme with standardised methodology and remote sensing verification, with results published as publicly accessible GIS data. All areas identified as mangrove under the national mapping programme should be protected by a national notification that does not depend on state-level demarcation for its legal effect.
Conclusion
The trajectory of India’s coastal regulation reflects a broader pattern in Indian environmental governance: initial protective ambition followed by incremental administrative erosion under development pressure, punctuated by judicial interventions that check the most egregious departures from legislative intent but cannot substitute for sustained institutional commitment to environmental protection. The CRZ Notification 2019’s changes, individually justifiable in specific contexts, collectively represent a weakening of the protective framework that the coast’s ecological significance and its climate vulnerability demands.
Reversing this trajectory requires recognising that coastal protection is not a constraint on development but a prerequisite for sustainable coastal economies. Fisheries, tourism, and coastal habitation all depend on the ecological health of the coastal zone. A coastline degraded by real estate development, mangrove loss, and sea-level rise-induced erosion is a coastline that can support neither sustainable fisheries nor premium tourism. The economic argument for strong coastal regulation is as compelling as the ecological one; it is simply less organised and less well-funded than the real estate lobby that consistently advocates for its weakening.
