Shobhika Singh Assistant Director, Central Water Commission PD6: River Siltation, Its Impact and Way Forward, IWW-2016 Karishma Bhatnagar Assistant Director, Central Water Commission April 7 th 2016, New Delhi

Contents Principle of remote sensing River morphology River dynamics Objectives of Morphological studies Morphological studies conducted by CWC Conclusion

Space technology in Everyday Life

Principle of Remote Sensing

River Morphology Ageing Of River

System Equilibrium workFamily

River Dynamics River Morphology Floods, tectonism, climate change, Avulsion of one river into another. Urban settlements, Water resources projects, mining, alteration of cropping pattern

Remote sensing River Mapping Identification of critical reaches River training work Planning of structures Identification of glacial lake Real time data system Floods Early warning system Mitigation measures Investigation and Monitoring Research and development Role of Remote Sensing in River Morphology

Objectives of Morphological Studies Future Prediction of river course behavior Response of river to natural and human events Rate of bank erosion or deposition Understanding river mechanics to facilitate modelling Shifting of the river course and change in its plan form Suggesting suitable river training works for restoration of vulnerable reaches

S No.NAME OF RIVER YEAR OF COMPLETION CONCLUSION 1 GHANDAK2012 Evaluation of the shifting characteristics of reach between Triveni upto confluence of river with Ganga near Hajipur, opposite Patna, has been considered. The maximum shift observed on left bank Km The maximum shift observed on right bank Km 2 GHAGARA2013 Evaluation of the shifting characteristics of reach of the river between Manuhan (Ramsanehighat) to Chhapra, having length of 310 kms. The maximum shifting observed kms. The critical locations along where major shifting has occurred were Ayodhya, Tanda, Golabazar, Barhaj and Bansdih 3SATLUJ2013 Evaluation of the shifting characteristics of reach between Bhakra dam to Harika Site having a length of 175km. Maximum shifting between 1.3 to 3.2km was observed at Nawashahr, Phillaur, Nurmahal and Nakodar Himalayan and Peninsular Rivers like Ganga, Sharda, Rapti, Tapi etc. Yet to be completed MOU has been signed with different IITs and the work is in progress. Morphological studies conducted by CWC

Results of Studies (Satluj & Ghagara)

Physically distributed hydrological catchment model River modelling Future predictions of morphological changes in a river Physiographical characteristics Meteorological characteristics Hydrological characteristics Remote sensing: DEM, Land use/cover map; Soil map: National Bureau of soil survey & land use planning Indian Meteorological Department (IMD) CWC Hydrological Observation Stations: GDSQ sites Climate Change A. Data from reports of IPCC B. General Circulation Model C. National Aeronautics & Space administration (NASA) Goddard Institute for space studies D. National Research Council (NRC) Input data Land use change due to development, urbanization, industrialization etc. Conclusion