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Mission Monsoon 2026: GCC & TANGEDCO Fast-Track 1,671 km Stormwater Grid and Power Substation Fortification

With the September 30 deadline looming, Greater Chennai Corporation and TANGEDCO mount multi-agency war-footing works across Velachery, Ambattur, and Kolathur to prevent waterlogging and electrocution risks.

18 September 2026VizhiTN Editorial Bureau6 min read
Mission Monsoon 2026: GCC & TANGEDCO Fast-Track 1,671 km Stormwater Grid and Power Substation Fortification
📷 Visual Archive • VizhiTN Field Desk✓ Verified Story

Why this matters to Tamil Nadu

Chennai's urban topography makes early drain desilting and substation insulation critical to saving lives and preventing catastrophic urban paralysis during heavy cyclonic depressions. This review tracks real ground progress across vulnerable flood pockets.

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Key Highlights

Essential facts and key takeaways

5 points
Drainage Coverage: 1,671 km SWD network across 15 GCC zones
Silt Catch Pits: 1.10 lakh catch pits cleared
High-Capacity Pumps: Over 850 heavy-duty pumps deployed
Power Pillar Safety: 4,200+ electrical pillar boxes raised by 1.2m
Completion Deadline: September 30, 2026

Timeline

Chronological developments

4 events
1
Sep 01, 2026
State-wide pre-monsoon desilting review chaired by Chief Secretary
2
Sep 15, 2026
Over 78% arterial desilting verified across Kosasthalaiyar & Kovalam basins
3
Sep 18, 2026
GCC & TANGEDCO joint mock drills conducted at 105 waterlogging hotspots
4
Sep 30, 2026
Final statutory deadline for all open trench closures and silt disposal

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