River and Inlets Cross-Sections Extraction Using Stereo Pair Images for Hydraulic Modeling

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River and Inlets Cross-Sections Extraction Using Stereo Pair Images for Hydraulic Modeling

Vuppati, Mark Prabhakar / Dixit, Shubham / Deogade, Rajani B. / Chandra, Prabhat

In order to conduct a hydraulic model simulation for gage and discharge, a very essential part is the bathymetry data of river channel. Ground survey of these rivers for their cross-sections is a very tedious and expensive task and continuous availability of these cross-sections data for longer river stretch is sometimes hard to find. This paper presents an approach to extract the cross-sections with the help of Cartosat-1 Stereo pair images procured from NRSC. This approach was used to extract the portions of missing cross-sections for the main river and its inlet channels for the 127 km stretch of Mula-Mutha river flowing through Pune city and suburbs starting from Khadakwasla dam up to Daund, located in upper Bhima Basin. This study is a part of Purpose Driven Study (PDS), under National Hydrology Project (NHP). Freely available DEMs like ASTER DEM and SRTM DEM does not give satisfactory results when it comes to extracting the cross-sections for small inlets, therefore, Cartosat-1 stereo pair images were used to generate DEM of 5 m resolution using ERDAS IMAGINE 2014. Further, to extract the cross sections, QGIS2RAS (A Plugin for Q-GIS) was used. Out of the total reach length of 127 km, a good quality surveyed data was available for 77 km in parts, this data was used for the required corrections and verification of extracted data. With a few modifications for fine tuning, the cross-sections produced were of satisfactory quality.

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Dokumentinformationen

Titel :

River and Inlets Cross-Sections Extraction Using Stereo Pair Images for Hydraulic Modeling

Weitere Titelangaben:

Lecture Notes in Civil Engineering

Beteiligte:

Timbadiya, P. V. (Herausgeber:in) / Patel, P. L. (Herausgeber:in) / Singh, Vijay P. (Herausgeber:in) / Sharma, Priyank J. (Herausgeber:in) / Vuppati, Mark Prabhakar (Autor:in) / Dixit, Shubham (Autor:in) / Deogade, Rajani B. (Autor:in) / Chandra, Prabhat (Autor:in)

Kongress:

International Conference on Hydraulics, Water Resources and Coastal Engineering ; 2021 December 23, 2021 - December 25, 2021

Erschienen in:

Hydrology and Hydrologic Modelling ; Kapitel : 24 ; 305-315

Lecture Notes in Civil Engineering ; 312

Erscheinungsdatum :

2023-05-01

Format / Umfang :

11 pages

ISBN :

978-981-19-9147-9 , 978-981-19-9146-2

ISSN :