Nepal is a country with many mountains, situated in Hindukush Himalayas. Stone quarrying is currently accompanying the rapid expansion of physical infrastructure in the Roshi River and its tributaries. This study aims to establish the discharge and suspended sediment rating curve of the Roshi River. It also includes the impact of the stone quarries in the Roshi River during operation and non-operation at the upper Roshi watershed, Nepal. The data includes stage data, measurement of discharge, and suspended sediment in the years 2022 and 2023. The regression analysis was conducted with the development of a discharge rating curve having a coefficient of determination R2 = 0.83. The suspended sediment rating curve of the annual and monsoon, of the year 2022 was developed with a coefficient of determination of 0.23 and 0.39 respectively. The average suspended sediment concentration at tributary Roshi is 203.04 percent higher than at upstream. The increase in average suspended sediment concentration at main Roshi concerning tributary Roshi is 14.25 percent. Further, the decrease in average suspended sediment concentration due to the non-operation of the stone quarry in January 2023 concerning December 2022 is 52.13 percent in tributary Roshi and 12.59 percent in the main Roshi River. Furthermore, the increase in SSC during the operation of stone quarry including monsoon contribution is 682.97 percent higher than during non-operation. The increase in SSC during the operation of stone quarry excluding monsoon contribution is 64.34 percent higher than during non-operation. The study will facilitate Panauti hydropower and the concerned authorities of Panauti to adopt various measures to control sediment discharge from stone quarries at Roshi for sustainable development of the Roshi watershed.
| Published in | American Journal of Water Science and Engineering (Volume 9, Issue 4) |
| DOI | 10.11648/j.ajwse.20230904.11 |
| Page(s) | 86-96 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2023. Published by Science Publishing Group |
Discharge, Stage, Stone Quarry, Suspended Sediment Rating Curve
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APA Style
Suman Shrestha, Prachand Man Pradhan, Hari Krishna Shrestha. (2023). Stone Quarries and Hydrological Regime of Roshi with Emphasis on Sedimentation. American Journal of Water Science and Engineering, 9(4), 86-96. https://doi.org/10.11648/j.ajwse.20230904.11
ACS Style
Suman Shrestha; Prachand Man Pradhan; Hari Krishna Shrestha. Stone Quarries and Hydrological Regime of Roshi with Emphasis on Sedimentation. Am. J. Water Sci. Eng. 2023, 9(4), 86-96. doi: 10.11648/j.ajwse.20230904.11
AMA Style
Suman Shrestha, Prachand Man Pradhan, Hari Krishna Shrestha. Stone Quarries and Hydrological Regime of Roshi with Emphasis on Sedimentation. Am J Water Sci Eng. 2023;9(4):86-96. doi: 10.11648/j.ajwse.20230904.11
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Download@article{10.11648/j.ajwse.20230904.11,
author = {Suman Shrestha and Prachand Man Pradhan and Hari Krishna Shrestha},
title = {Stone Quarries and Hydrological Regime of Roshi with Emphasis on Sedimentation},
journal = {American Journal of Water Science and Engineering},
volume = {9},
number = {4},
pages = {86-96},
doi = {10.11648/j.ajwse.20230904.11},
url = {https://doi.org/10.11648/j.ajwse.20230904.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajwse.20230904.11},
abstract = {Nepal is a country with many mountains, situated in Hindukush Himalayas. Stone quarrying is currently accompanying the rapid expansion of physical infrastructure in the Roshi River and its tributaries. This study aims to establish the discharge and suspended sediment rating curve of the Roshi River. It also includes the impact of the stone quarries in the Roshi River during operation and non-operation at the upper Roshi watershed, Nepal. The data includes stage data, measurement of discharge, and suspended sediment in the years 2022 and 2023. The regression analysis was conducted with the development of a discharge rating curve having a coefficient of determination R2 = 0.83. The suspended sediment rating curve of the annual and monsoon, of the year 2022 was developed with a coefficient of determination of 0.23 and 0.39 respectively. The average suspended sediment concentration at tributary Roshi is 203.04 percent higher than at upstream. The increase in average suspended sediment concentration at main Roshi concerning tributary Roshi is 14.25 percent. Further, the decrease in average suspended sediment concentration due to the non-operation of the stone quarry in January 2023 concerning December 2022 is 52.13 percent in tributary Roshi and 12.59 percent in the main Roshi River. Furthermore, the increase in SSC during the operation of stone quarry including monsoon contribution is 682.97 percent higher than during non-operation. The increase in SSC during the operation of stone quarry excluding monsoon contribution is 64.34 percent higher than during non-operation. The study will facilitate Panauti hydropower and the concerned authorities of Panauti to adopt various measures to control sediment discharge from stone quarries at Roshi for sustainable development of the Roshi watershed.
},
year = {2023}
}
TY - JOUR T1 - Stone Quarries and Hydrological Regime of Roshi with Emphasis on Sedimentation AU - Suman Shrestha AU - Prachand Man Pradhan AU - Hari Krishna Shrestha Y1 - 2023/10/28 PY - 2023 N1 - https://doi.org/10.11648/j.ajwse.20230904.11 DO - 10.11648/j.ajwse.20230904.11 T2 - American Journal of Water Science and Engineering JF - American Journal of Water Science and Engineering JO - American Journal of Water Science and Engineering SP - 86 EP - 96 PB - Science Publishing Group SN - 2575-1875 UR - https://doi.org/10.11648/j.ajwse.20230904.11 AB - Nepal is a country with many mountains, situated in Hindukush Himalayas. Stone quarrying is currently accompanying the rapid expansion of physical infrastructure in the Roshi River and its tributaries. This study aims to establish the discharge and suspended sediment rating curve of the Roshi River. It also includes the impact of the stone quarries in the Roshi River during operation and non-operation at the upper Roshi watershed, Nepal. The data includes stage data, measurement of discharge, and suspended sediment in the years 2022 and 2023. The regression analysis was conducted with the development of a discharge rating curve having a coefficient of determination R2 = 0.83. The suspended sediment rating curve of the annual and monsoon, of the year 2022 was developed with a coefficient of determination of 0.23 and 0.39 respectively. The average suspended sediment concentration at tributary Roshi is 203.04 percent higher than at upstream. The increase in average suspended sediment concentration at main Roshi concerning tributary Roshi is 14.25 percent. Further, the decrease in average suspended sediment concentration due to the non-operation of the stone quarry in January 2023 concerning December 2022 is 52.13 percent in tributary Roshi and 12.59 percent in the main Roshi River. Furthermore, the increase in SSC during the operation of stone quarry including monsoon contribution is 682.97 percent higher than during non-operation. The increase in SSC during the operation of stone quarry excluding monsoon contribution is 64.34 percent higher than during non-operation. The study will facilitate Panauti hydropower and the concerned authorities of Panauti to adopt various measures to control sediment discharge from stone quarries at Roshi for sustainable development of the Roshi watershed. VL - 9 IS - 4 ER -
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