Volume 14 Issue 2 November - January
2019
Research Paper
Nehal Ahmad*, Naved Ahasan**, Saif
Said***
*Assistant Professor, Department of
Civil Engineering, Aliah University, Kolkata, India.
**Professor, Department of Civil
Engineering, JMI, New Delhi, India.
***Associate Professor, Department of
Civil Engineering, AMU, Aligarh, India.
Ahmad, N., Ahasan, N., & Said, S.
(2019). Assessment of Changes in Morphological Characteristics of River Yamuna
(Wazirabad-Okhla) in Delhi using Remote Sensing Data. i-manager’s
Journal on Future Engineering and Technology , 14 (2), 55-65. https://doi.org/10.26634/jfet.14.2.14852
Abstract
For a river
management, it is necessary to identify the vulnerability and their effects on
the morphology of river bed and riverside lands. This study aims to focus on
the identification of vulnerable zone with erosion and shifting of the 22 km
stretch River Yamuna along Delhi between Wazirabad Barrage and Okhla Barrage.
An attempt has been made to use GIS and RS techniques for change detection of
river courses for past and present geographical data sources of river courses.
Using three dry season satellite images of Landsat MSS (60 m) for 1980 and 1989
and Landsat8 (30 m) for 2017, largely pre and post construction of major
barrages and bridges have been considered. The bank line movement rates (m/yr)
of the river were analyzed under three periods: 1980-1989, 1989-2017, and
1980-2017. The result indicates that the downstream of Wazirabad barrage and
upstream of Okhla barrage have changed significantly due to varying reason of
erosion, accretion, and construction activities. Rate of shifting in both the
upstream of Okhla barrage and downstream Wazirabad barrage is more in between
1980-1980 as compared to 1989-2017. The rate of shifting between 1980-1989 in
downstream of Wazirabad barrage was 3.6 times more between 1989-2017. The rate
of shifting between 1980-89 in upstream of Okhla barrage was 3.4 times more
between 1989-2017. The most effective factors in morphological changes are the
changes in regime because of dam construction, reduction of runoff, and
accumulation of sediment loads on the riverbed.
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