Transcript Karishma Shobhikax

PD6: River Siltation, Its Impact and Way Forward, IWW-2016
Shobhika Singh
Assistant Director,
Central Water Commission
Karishma Bhatnagar
Assistant Director,
Central Water Commission
April 7th 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
Family
work
River
Morphology
River
Dynamics
Urban
settlements,
Water resources
projects,
mining,
alteration of
cropping pattern
Floods,
tectonism,
climate change,
Avulsion of one
river into
another.
Role of Remote Sensing in River Morphology
Remote
sensing
Real time
data system
River Mapping
Identification
of critical
reaches
River training
work
Identification
of glacial lake
Planning of
structures
Investigation
and
Monitoring
Floods
Early warning
system
Mitigation
measures
Research and
development
Objectives of Morphological Studies
Future Prediction of river
course behavior
Response of river to natural
and human events
Objectives of
Morphological
Studies
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
Morphological studies conducted by CWC
S No.
1
2
NAME OF RIVER
GHANDAK
GHAGARA
YEAR OF
COMPLETION
CONCLUSION
2012
• 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 - 6.18 Km
• The maximum shift observed on right bank - 8.04 Km
2013
• Evaluation of the shifting characteristics of reach of the river
between Manuhan (Ramsanehighat) to Chhapra, having length of
310 kms.
• The maximum shifting observed - 6-6.75 kms.
• The critical locations along where major shifting has occurred
were Ayodhya, Tanda, Golabazar, Barhaj and Bansdih
3
SATLUJ
2013
• 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.
4
15
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.
Results of Studies (Satluj & Ghagara)
Conclusion
Physically
distributed
hydrological
catchment
model
Physiographical
characteristics
Remote sensing: DEM,
Land use/cover map;
Soil
map:
National
Bureau of soil survey &
land use planning
Land use change due to
development,
urbanization,
industrialization etc.
Indian Meteorological
Department (IMD)
Input data
Meteorological
characteristics
Climate Change
River
modelling
Hydrological
characteristics
CWC Hydrological
Observation Stations:
GDSQ sites
Future predictions of
morphological changes in a
river
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)