← Indian Geography

Water Resources and Irrigation in India

2 min read indian-geography water-resources irrigation

India has 4% of the world’s freshwater resources but supports 18% of the global population. Per capita water availability has declined from 5,177 m³ (1951) to 1,486 m³ (2024) — entering water stress territory.

Surface Water

Source Potential (BCM/year) Utilized (BCM)
Rivers 1,869 690
Groundwater 433 251
Total 2,302 941

Groundwater Status

Category Assessment Units States
Over-exploited (>100% extraction) 1,200+ Punjab, Haryana, Rajasthan, Delhi, parts of Karnataka, TN, AP
Critical (90-100%) 300+ Gujarat, Maharashtra, some of UP
Semi-critical (70-90%) 1,200+ Spread across many states

Water Usage by Sector

Sector Share Notes
Agriculture 80% Irrigation for food security
Domestic 12% Urban 135 lpcd, Rural 55 lpcd
Industry 6% Thermal power is largest industrial user
Others 2% Environment, recreation, navigation

Water Productivity

India’s water use efficiency is low: $3.5/m³ vs. Israel’s $58/m³. Rice uses 3,000-5,000 litres/kg, wheat 1,500-2,000 litres/kg. The government’s “More Crop Per Drop” initiative promotes micro-irrigation (drip and sprinkler).

Major Irrigation Projects

Project River State(s) Irrigation (lakh ha) Power (MW)
Bhakra Nangal Sutlej Punjab, Haryana, Rajasthan 15 1,325
Sardar Sarovar Narmada Gujarat, MP, Rajasthan 18 1,450
Indira Sagar Narmada MP 2.7 1,000
Hirakud Dam Mahanadi Odisha 2.5 347
Nagarjuna Sagar Krishna Telangana, Andhra 9.7 960
Tungabhadra Tungabhadra Karnataka, Andhra 5.3 122
Mettur Kaveri Tamil Nadu 3.0 240

Canal Systems

Canal State Length Command Area
Indira Gandhi Canal Rajasthan (from Sutlej-Beas) 650 km 13.9 lakh ha
Sharda Sahayak UP (Ghaghara to Sarda) 260 km 19 lakh ha
Upper Ganga Canal UP (Haridwar to Aligarh) 292 km 8 lakh ha

Traditional Water Harvesting

Structure Region Function
Johad Rajasthan Check dam for percolation
Kunds Thar Desert Rainwater collection
Baolis (Stepwells) Delhi, Gujarat, Rajasthan Historic groundwater structures
Ahars/Pynes Bihar Floodwater collection
Keres/Kuntas Karnataka Tank irrigation
Eris Tamil Nadu Village tank chain systems

Jal Jeevan Mission (2019)

  • Objective: Tap water to every rural household by 2024 (extended to 2026)
  • Progress: 50% (2019) → 80%+ (2024); ~14 crore households connected
  • Funding: ₹3.6 lakh crore (central + state share)

Key Challenges

  • Groundwater depletion: Punjab water table declining 0.5-1 m/year
  • Water pollution: 70% of rivers polluted with untreated sewage
  • Low water use efficiency: 38% in agriculture vs. 55-60% in East Asia
  • Inter-state water disputes: Cauvery, Krishna, Godavari, Narmada
  • Institutional fragmentation: 20+ agencies involved in water governance