Contents 1. Introduction 2. Study area 3. Data sources and methods 3.1. Satellite data 3.2. Glacier lake mapping 3.3. Glacier lake classification 3.4. Glacier lake inventory parameters 4. Glacier lake distribution in Uttarakhand 4.1 The Tons basin 4.2 The Yamuna basin 4.3 The Bhagirathi basin 4.4 The Bhilangna basin 4.5 The Mandakini basin 4.6 The Alaknanda basin 4.7 The Pinder basin 4.8 The Goriganga basin 4.9 The Dhauliganga basin 4.10 The Kutiyangti basin 5. Discussion 6. Conclusions 7. Annexure 1: Glacier lake inventory of Uttarakhand 8. Acknowledgements 9. References