Basin study recommendations

MoEF&CC cumulative impact assessment recommendations, including dropping of projects and project-specific environmental flows, apply. Projects beyond those in the Basin Study report may not be allotted to a developer, as Forest Clearance or Environmental Clearance may not be granted.

Basin Studies and DPR Summaries

Comprehensive basin studies conducted by the Ministry of Environment, Forest and Climate Change (MoEF&CC) identify hydropower development potential across Arunachal Pradesh's seven major river basins.

Basin Studies Overview

Detailed Basin Summaries

Kameng Basin

Basin Study: April 2015

Study Conducted By: Ministry of Environment, Forest and Climate Change

Projects Identified: 29 Hydroelectric Projects (HEPs)

Total Potential: 1,282.70 MW

Geographic Scope: Northwestern Arunachal Pradesh

Project Scale Distribution:

• Large projects (> 100 MW): Multiple
• Medium projects (25-100 MW): Several
• Small projects (< 25 MW): Multiple

Development Status:

• Several projects in feasibility stage
• Tendering in progress for some projects
• Environmental assessments underway
• Land acquisition in process

Chief Engineer: Shri Moto Basar (9436011190)

Download Kameng Basin Study (PDF)

Subansiri Basin

Basin Study: April 2016

Study Conducted By: Ministry of Environment, Forest and Climate Change

Projects Identified: 29 Hydroelectric Projects (HEPs)

Total Potential: 11,282.70 MW

Geographic Scope: Central Arunachal Pradesh

Project Characteristics:

• Mix of large storage and run-of-river projects
• Strategic basin for overall development
• Multiple developer interests
• Complex environmental considerations

Development Status:

• Environmental assessments in progress
• Feasibility studies ongoing
• Community consultations
• Project-specific committees

Chief Engineer: Shri T.U Taba (7005893359)

Download Subansiri Basin Study (PDF)

Subansiri (Dikrong) Basin

Basin Study: April 2018

Study Conducted By: Ministry of Environment, Forest and Climate Change

Projects Identified: 27 Hydroelectric Projects (HEPs)

Total Potential: 1,116.5 MW

Geographic Scope: Subansiri region (Dikrong tributary)

Basin Characteristics:

• Separate assessment from main Subansiri Basin
• Distinct hydrological characteristics
• Lower capacity but high strategic value
• Sensitive environmental zones

Development Status:

• Feasibility studies in early stages
• Environmental screening ongoing
• Multi-stakeholder coordination
• Long-term development pipeline

Chief Engineer: Shri T.U Taba (7005893359)

Download Subansiri Dikrong Basin Study (PDF)

Siang Basin

Basin Study: March 2015

Study Conducted By: Ministry of Environment, Forest and Climate Change

Total Projects Identified: 44 Hydroelectric Projects (HEPs)

Projects Status:

• Approved for Development: 29 HEPs
• Dropped/Deferred: 15 HEPs

Total Potential: 18,293 MW

Basin Significance: Largest single hydropower basin in Arunachal Pradesh

Project Scale:

• Largest Project: Siang Upper Stage-II (3,750 MW)
• Multiple projects above 1,000 MW capacity
• Range from 100 MW to 3,750 MW
• Mix of storage and run-of-river

Strategic Projects:

• Siang Upper Stage-II: 3,750 MW
• Major storage projects for water management
• Flood moderation benefits
• Multi-purpose development

Development Status:

• Multiple projects in implementation
• Environmental clearances progressing
• Infrastructure development underway
• Community engagement ongoing

Chief Engineer: Shri Karom Perme (9436040184) Email: hpdmonitoring-arn[at]nic[dot]in

Download Siang Basin Study (PDF)

Dibang Basin

Basin Status: Assessment ongoing

Hydropower Potential: Significant untapped resources

Geographic Scope: Eastern Arunachal Pradesh

Development Stage: Preliminary investigation

Future Plans: Comprehensive basin study planned

Chief Engineer: Shri Along Ketan (9436059399)

Download Dibang Basin Study (PDF)

Lohit Basin

Basin Status: Operational projects present

Hydropower Potential: Significant

Geographic Scope: Southeastern Arunachal Pradesh

Development Stage: Projects under construction and operation

Ongoing Projects: Multiple projects in various stages

Chief Engineer: Shri Along Ketan (9436059399)

Download Lohit Basin Study (PDF)

Tawang Basin

Basin Status: Strategic basin under assessment

Hydropower Potential: Significant

Geographic Scope: Northern Arunachal Pradesh

Development Stage: Early-stage exploration

Future Plans: Development strategy being formulated

Chief Engineer: Shri Along Ketan (9436059399)

Download Tawang Basin Study (PDF)

Key Findings from Basin Studies

Environmental Sensitivity

Basin studies identified:

• Biodiversity hotspots requiring protection
• Sensitive ecological areas
• Conservation zones
• Wildlife corridors
• Forest cover requirements

Social Considerations

• Tribal populations in project areas
• Customary land rights
• Traditional livelihood patterns
• Resettlement requirements
• Community consultation needs

Technical Feasibility

• Hydrological assessments
• Geological surveys
• Power generation potential
• Design standards
• Construction feasibility

Prioritization Framework

Basin studies recommended project prioritization based on:

• Environmental sensitivity
• Social impact management capacity
• Technical viability
• Developer readiness
• Strategic importance

Project Approval Process

Basin Study Recommendations

Basin studies identify projects as:

• Recommended for Development: Subject to clearances
• Conditional Approval: With specific conditions
• Dropped/Deferred: Due to environmental or social concerns

Post-Study Process

1. Project Notification: Approved projects formally notified
2. Concession Opening: Projects opened for bidding
3. Developer Selection: Through competitive process
4. Feasibility Stage: Detailed studies by developer
5. Environmental Clearance: MoEF&CC clearance obtained
6. Forest Clearance: Forest Department approval
7. Construction Start: After all clearances

Using Basin Study Information

For Developers

• Project identification and evaluation
• Capacity assessment
• Environmental requirement understanding
• Community engagement planning
• Feasibility study foundation

For Communities

• Information on potential projects
• Impact understanding
• Benefit identification
• Participation opportunities
• Rights and protections

For Government

• Policy formulation
• Strategic planning
• Resource allocation
• Monitoring framework
• Performance assessment

Contact for Basin Study Information

Chief Engineer (Basin-specific):

• Kameng: Shri Moto Basar (9436011190)
• Subansiri: Shri T.U Taba (7005893359)
• Siang: Shri Karom Perme (9436040184)
• Dibang, Lohit, Tawang: Shri Along Ketan (9436059399)

Commissioner, DHPD Email: commrdhpd[dot]arn[at]gmail[dot]com Phone: 8731931119 (PIO)

Civil Secretariat, Itanagar - 791111

Related Resources

• Project Portfolio
• Basin Development
• Environmental Framework
• Schemes and Policies