Assessment of Streamflow Characteristics in a Watershed Using Flow Duration Curves and Hydrograph Analysis

Deepa Varghese G. S., Mohandas Chadaga, U. Lathashri, Surumi Salim, Atma Jyoti, Som Pant

2022

Abstract

Assessment of streamflow characteristics can be considered as one of the most important evaluations that need to be performed in a watershed for water use planning, implementation of various restoration projects and the validation of its effectiveness. Out of the several available methods, flow duration curves (FDC) and hydrograph analysis can be considered as the most effective and simplest methods to assess the flow characteristics of a stream. The present study aims to evaluate the seasonal variations in the flow characteristics of one of the important rivers in central Kerala, India, the Meenachil river. The study was done by interpreting the Base Flow Index (BFI) values of seasonal FDCs and baseflow separation technique using data from 4 stream gauging stations in the catchment. As per the analysis, the river presented intermittent flows with variably gaining and losing river reach along its course. This intermittent nature of the stream was distinctly revealed through the full time FDCs sustaining flows for 47% of time on the upstream reaches to 72%, 62% and 78% progressing towards the downstream. The baseflow contribution to the stream was greatest during the SW monsoon season for all the stations, particularly station 4 recording a maximum of 40.8 cumecs. The BFI values calculated using both sliding interval method and FDC were comparable and presented a very good appraisal on the seasonal variations in the streamflow.

Paper Citation

in Harvard Style

Varghese G. S. D., Chadaga M., Lathashri U., Salim S., Jyoti A. and Pant S. (2022). Assessment of Streamflow Characteristics in a Watershed Using Flow Duration Curves and Hydrograph Analysis. In Proceedings of the 3rd International Symposium on Water, Ecology and Environment - Volume 1: ISWEE; ISBN 978-989-758-639-2, SciTePress, pages 90-95. DOI: 10.5220/0011907500003536

in Bibtex Style

@conference{iswee22,
author={Deepa Varghese G. S. and Mohandas Chadaga and U. Lathashri and Surumi Salim and Atma Jyoti and Som Pant},
title={Assessment of Streamflow Characteristics in a Watershed Using Flow Duration Curves and Hydrograph Analysis},
booktitle={Proceedings of the 3rd International Symposium on Water, Ecology and Environment - Volume 1: ISWEE},
year={2022},
pages={90-95},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011907500003536},
isbn={978-989-758-639-2},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 3rd International Symposium on Water, Ecology and Environment - Volume 1: ISWEE
TI - Assessment of Streamflow Characteristics in a Watershed Using Flow Duration Curves and Hydrograph Analysis
SN - 978-989-758-639-2
AU - Varghese G. S. D.
AU - Chadaga M.
AU - Lathashri U.
AU - Salim S.
AU - Jyoti A.
AU - Pant S.
PY - 2022
SP - 90
EP - 95
DO - 10.5220/0011907500003536
PB - SciTePress