The Kimwarer River basin covers 138.2 km2. It has experienced ecosystem degradation due to extensive farming that has impacted on water yield. This study was undertaken to assess the impacts of land use changes on river flow using SWAT, a mathematical model that has the potential to predict the impact of land management practices on water at catchment scale. Current and historic flow data were collected for model calibration and validation. The model was then used to simulate stream flow for different land use and land cover scenarios by varying the extend of forest cover and agriculture. The model was successfully calibrated and validated for stream flow, and proved capable of predicting flow with R2 and NSE values of 0.79 and 0.31 respectively. During validation, the model predicted flows with R2 and NSE values of 0.70 and 0.50 respectively. For scenario analysis to determine the effect of land use change on stream flow, it was observed that runoff decreased with increase in forest cover, while base-flow increased. Introduction of terraces as a management operation on agricultural land reduced runoff by 46%. It is evident from the study that the current trend of land use change affects stream flow.
| Published in | American Journal of Water Science and Engineering (Volume 4, Issue 4) |
| DOI | 10.11648/j.ajwse.20180404.14 |
| Page(s) | 107-116 |
| 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), 2019. Published by Science Publishing Group |
Basin, Land Use, Modelling, Stream Flow, SWAT
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APA Style
Daniel Kimutai Kiplagat, Julius Kipkemboi Kollongei, Clement Kiprotich Kiptum. (2019). Modelling the Impacts of Land Use Change on Stream Flow in the Kimwarer Catchment Using SWAT. American Journal of Water Science and Engineering, 4(4), 107-116. https://doi.org/10.11648/j.ajwse.20180404.14
ACS Style
Daniel Kimutai Kiplagat; Julius Kipkemboi Kollongei; Clement Kiprotich Kiptum. Modelling the Impacts of Land Use Change on Stream Flow in the Kimwarer Catchment Using SWAT. Am. J. Water Sci. Eng. 2019, 4(4), 107-116. doi: 10.11648/j.ajwse.20180404.14
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Download@article{10.11648/j.ajwse.20180404.14,
author = {Daniel Kimutai Kiplagat and Julius Kipkemboi Kollongei and Clement Kiprotich Kiptum},
title = {Modelling the Impacts of Land Use Change on Stream Flow in the Kimwarer Catchment Using SWAT},
journal = {American Journal of Water Science and Engineering},
volume = {4},
number = {4},
pages = {107-116},
doi = {10.11648/j.ajwse.20180404.14},
url = {https://doi.org/10.11648/j.ajwse.20180404.14},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajwse.20180404.14},
abstract = {The Kimwarer River basin covers 138.2 km2. It has experienced ecosystem degradation due to extensive farming that has impacted on water yield. This study was undertaken to assess the impacts of land use changes on river flow using SWAT, a mathematical model that has the potential to predict the impact of land management practices on water at catchment scale. Current and historic flow data were collected for model calibration and validation. The model was then used to simulate stream flow for different land use and land cover scenarios by varying the extend of forest cover and agriculture. The model was successfully calibrated and validated for stream flow, and proved capable of predicting flow with R2 and NSE values of 0.79 and 0.31 respectively. During validation, the model predicted flows with R2 and NSE values of 0.70 and 0.50 respectively. For scenario analysis to determine the effect of land use change on stream flow, it was observed that runoff decreased with increase in forest cover, while base-flow increased. Introduction of terraces as a management operation on agricultural land reduced runoff by 46%. It is evident from the study that the current trend of land use change affects stream flow.},
year = {2019}
}
TY - JOUR T1 - Modelling the Impacts of Land Use Change on Stream Flow in the Kimwarer Catchment Using SWAT AU - Daniel Kimutai Kiplagat AU - Julius Kipkemboi Kollongei AU - Clement Kiprotich Kiptum Y1 - 2019/01/03 PY - 2019 N1 - https://doi.org/10.11648/j.ajwse.20180404.14 DO - 10.11648/j.ajwse.20180404.14 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 - 107 EP - 116 PB - Science Publishing Group SN - 2575-1875 UR - https://doi.org/10.11648/j.ajwse.20180404.14 AB - The Kimwarer River basin covers 138.2 km2. It has experienced ecosystem degradation due to extensive farming that has impacted on water yield. This study was undertaken to assess the impacts of land use changes on river flow using SWAT, a mathematical model that has the potential to predict the impact of land management practices on water at catchment scale. Current and historic flow data were collected for model calibration and validation. The model was then used to simulate stream flow for different land use and land cover scenarios by varying the extend of forest cover and agriculture. The model was successfully calibrated and validated for stream flow, and proved capable of predicting flow with R2 and NSE values of 0.79 and 0.31 respectively. During validation, the model predicted flows with R2 and NSE values of 0.70 and 0.50 respectively. For scenario analysis to determine the effect of land use change on stream flow, it was observed that runoff decreased with increase in forest cover, while base-flow increased. Introduction of terraces as a management operation on agricultural land reduced runoff by 46%. It is evident from the study that the current trend of land use change affects stream flow. VL - 4 IS - 4 ER -
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