Extracting Hydrologic Parameters from Open Source Digital Spatial Data for HMS Modeling

Authors

  • Kamuju Narasayya  Central Water and Power Research Station, Pune, Maharashtra, India

Keywords:

Modeling, watershed, Muskingum, Node, Flow direction, Digital Elevation Model

Abstract

A methodology is presented for extracting topographic, topologic, and hydrologic information, from the digital spatial data of a hydrologic system, for hydrologic modelling with HMS. Methods for stream and watershed delineation from digital elevation models are presented. After vectorising raster-based stream segments and watersheds, navigation fields are added to their tables to support topologic analysis based entirely on the information stored in the tables of the spatial datasets. Algorithms for calculation for calculation of stream segment and watershed hydrologic parameters also discussed. These parameters are Curve Number, area, and lag-time for the watersheds, and routing model and travel time for the stream segments. Once the hydrologic parameters and topology are defined, a basin model that summarizes all the information and which can be used as input for HMS is created. Using this methodology, the determination of the spatial parameters for HMS is an automatic process that accelerates the setting up of a hydrologic model and leads to reproducible results.

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IInternational Journal of Scientific Research in Computer Science, Engineering and Information Technology

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Published

2020-12-30

Issue

Volume 6, Issue 6, November-December-2020

Section

Research Articles

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Copyright (c) IJSRCSEIT

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
Kamuju Narasayya, " Extracting Hydrologic Parameters from Open Source Digital Spatial Data for HMS Modeling" International Journal of Scientific Research in Computer Science, Engineering and Information Technology(IJSRCSEIT), ISSN : 2456-3307, Volume 6, Issue 6, pp.303-315, November-December-2020.