Inter-State Boundary Disputes in India — Causes, Cases & UPSC Notes

India has witnessed numerous inter-state boundary disputes since independence. These disputes arise from the convergence of historical, cultural, administrative and resource-related factors, and they pose real challenges to governance, inter-state relations and public order. Some have led to armed clashes — the July 2021 confrontation between Assam and Mizoram police left six Assam personnel dead — while others simmer as long-standing contentions like Belagavi (Karnataka-Maharashtra) and Chandigarh (Punjab-Haryana).

For UPSC aspirants, this is a GS II theme linked to federalism, cooperative federalism and the role of the Inter-State Council (Article 263) and Zonal Councils.

History of state reorganisation

At independence

States were classified into four categories:

• Part A: Former Governor's Provinces of British India.
• Part B: Former princely states, often with a Rajpramukh.
• Part C: Former Chief Commissioner's Provinces and certain princely states administered centrally.
• Part D: Andaman and Nicobar Islands.

States Reorganisation Act 1956

• Based on the Fazal Ali Commission (SRC, 1953) recommendations.
• Created 14 states and 6 Union Territories.
• Reorganisation largely followed linguistic lines.
• Abolished Part A/B distinction; Part C and D abolished.

Subsequent reorganisations

• Maharashtra-Gujarat (1960), Punjab-Haryana (1966), North-East reorganisations (1962-1987), creation of Jharkhand/Chhattisgarh/Uttarakhand (2000), Telangana (2014), J&K reorganisation (2019).

Major inter-state boundary disputes

Belagavi (Karnataka-Maharashtra)

• Historically part of Bombay Presidency, transferred to Mysore state under the 1956 reorganisation.
• Maharashtra claims Belagavi (and nearby areas) on linguistic grounds — large Marathi-speaking population.
• Mahajan Committee (1966) recommended retention of Belagavi in Karnataka; Maharashtra rejected the report.
• The dispute has repeatedly flared and is sub judice before the Supreme Court.
• Karnataka declared Belagavi its second capital and holds winter Legislative Assembly sessions there.

Chandigarh (Punjab-Haryana)

• Punjab Reorganisation Act, 1966 made Chandigarh the joint capital of Punjab and Haryana.
• Punjab has long sought the transfer of Chandigarh to Punjab.
• Periodic political flashpoints; Rajiv-Longowal Accord 1985 promised transfer that was never implemented.

Inter-state disputes in the North-East

The North-East has seen multiple boundary disputes because state divisions were made on administrative grounds without clear ground demarcation. Assam's borders have historic contests with Nagaland, Meghalaya, Arunachal Pradesh and Mizoram.

Assam-Mizoram dispute

• Dispute over a 165-km boundary stemming from two British-era notifications — 1875 and 1933 — with differing interpretations.
• Assam follows the 1933 notification; Mizoram prefers the 1875 notification which gave a larger area to the Lushai Hills.
• The July 2021 clash at Vairengte triggered national attention.

Assam-Arunachal Pradesh dispute

• Stems from 1873 bifurcation of plains and hills and the 1951 transfer of some plain areas to Assam.
• Sporadic violence and an SC-monitored boundary commission.
• 2022-2024: Both states signed interim understanding agreements over 123 of the 164 disputed villages.

Assam-Nagaland dispute

• Long-standing dispute over several thousand hectares since Nagaland's creation in 1963.
• Multiple Supreme Court mediations; local Commission recommendations pending implementation.

Assam-Meghalaya dispute

• 12 disputed areas along the Assam-Meghalaya border.
• In March 2022, an MoU was signed covering 6 of 12 areas. Work continues on the remaining 6.

Odisha-Andhra Pradesh dispute

• Dispute over 21 villages along the coast and interior, tied to language and administrative claims.

Karnataka-Kerala (Kasaragod)

• Dispute over Kasaragod district; Kerala absorbed it in 1956, but Karnataka has periodically raised claims.

Reasons for continuation of disputes

• Frequent reorganisation of states leading to changing boundaries.
• Inefficacy of forums like the Inter-State Council and Zonal Councils in resolving disputes.
• Non-compliance with committee reports, judicial orders or administrative decisions.
• Political exploitation of border issues for local gains — CM speeches often harden positions.
• Ambiguous British-era notifications in the North-East.
• Ethnic and linguistic identity bound up with territorial claims.
• Resource disputes — forest, mineral and agricultural land.

Impact of border disputes

• Economic blockades disrupting supply chains and logistics.
• Escalation of violence and damage to public property.
• Disturbance of public order along disputed areas.
• Demands for new states and heightened regional identities.
• Damage to inter-state cooperation on other issues.
• Hardening of ethnic lines, especially in the North-East.

Institutional framework for resolution

Inter-State Council (ISC)

• Article 263 allows the President to establish an ISC for inter-state coordination.
• Constituted in 1990 by a Presidential Order under the Sarkaria Commission recommendation.
• Members: PM (Chair), all CMs, LG/Administrators of UTs, six Union Cabinet Ministers.
• Advisory body on disputes, policy coordination and subjects of common interest.
• Has met rarely — only 11 times since 1990.

Zonal Councils

• Statutory bodies under the States Reorganisation Act, 1956.
• Five Zonal Councils (Northern, Central, Eastern, Western, Southern) plus the North-Eastern Council under a separate Act of 1971.
• Union Home Minister chairs each zonal council.
• Meet occasionally; utility has declined.

Supreme Court

• Article 131 gives the SC original jurisdiction in disputes between states.
• Courts have acted as mediators and appointed Boundary Commissions.

Boundary Commissions

• Often appointed by the Central government or by the Supreme Court.
• Physically map and verify boundary based on historic records and ground realities.

Way forward

• Establish district-level committees to settle inter-state boundary disputes through ground-level coordination.
• Strengthen Inter-State Council and Zonal Councils — make meetings regular, empower them to facilitate negotiation.
• Compliance mechanisms — link fiscal transfers to compliance with agreed settlements.
• Encourage dialogue between states; incentivise amicable resolutions.
• Modern mapping using GIS, satellite imagery and GPS for accurate boundary delineation.
• Constitutional amendment if needed to empower an independent boundary tribunal.
• Education and public awareness to depoliticise boundary issues.

Latest developments (2024-26)

• Assam-Meghalaya and Assam-Arunachal signed interim MoUs covering most disputed areas.
• Assam-Mizoram dialogue continues with Central government facilitation.
• North-East Council has become a more active forum for inter-state coordination.
• Supreme Court continues to monitor boundary commission outputs in Assam's disputes.
• Updated context: The Northeast Council Vision 2047 document emphasises boundary settlement as a precondition for regional development. Modern GIS-based mapping is being used in new boundary agreements.

UPSC relevance

For Prelims, remember:

• Article 263 — Inter-State Council.
• Article 131 — SC original jurisdiction.
• Mahajan Commission (1966) — Belagavi issue.
• Punjab Reorganisation Act, 1966 — Chandigarh as joint capital.
• North-East Council Act, 1971.

For Mains (GS II):

• Examine the causes and implications of inter-state boundary disputes.
• Evaluate the role of the Inter-State Council and Zonal Councils.
• Critically assess the mechanisms for resolving boundary disputes.

In essays, boundary disputes illustrate the challenges of federalism, the persistence of colonial-era ambiguities, and the tension between identity politics and cooperative governance — all classical UPSC themes.