Next Article in Journal
Conditions for the Occurrence of Slaking and Other Disaggregation Processes under Rainfall
Previous Article in Journal
Runoff and Soil Erosion Assessment on Forest Roads Using a Small Scale Rainfall Simulator
Article Menu

Export Article

Open AccessArticle
Hydrology 2016, 3(3), 26; doi:10.3390/hydrology3030026

Impacts of Rainfall Variability, Land Use and Land Cover Change on Stream Flow of the Black Volta Basin, West Africa

1
Faculty of Science and Techniques, Master Research Program of the West African Science Service Center on Climate Change and Adapted Land Use (WASCAL), Climate Change and Energy, University Abdou Moumouni of Niamey, P. O. Box 10662, Niamey, 8000, Niger
2
Department of Energy and Environmental Engineering, University of Energy and Natural Resources, P. O. Box 214, Sunyani, Ghana
*
Author to whom correspondence should be addressed.
Academic Editor: Luca Brocca
Received: 4 May 2016 / Revised: 16 June 2016 / Accepted: 17 June 2016 / Published: 4 July 2016
View Full-Text   |   Download PDF [3606 KB, uploaded 4 July 2016]   |  

Abstract

Potential implications of rainfall variability along with Land Use and Land Cover Change (LULC) on stream flow have been assessed in the Black Volta basin using the SWAT model. The spatio-temporal variability of rainfall over the Black Volta was assessed using the Mann-Kendall monotonic trend test and the Sen’s slope for the period 1976–2011. The statistics of the trend test showed that 61.4% of the rain gauges presented an increased precipitation trend whereas the rest of the stations showed a decreased trend. However, the test performed at the 95% confidence interval level showed that the detected trends in the rainfall data were not statistically significant. Land use trends between the year 2000 and 2013 show that within thirteen years, land use classes like bare land, urban areas, water bodies, agricultural lands, deciduous forests and evergreen forests have increased respectively by 67.06%, 33.22%, 7.62%, 29.66%, 60.18%, and 38.38%. Only grass land has decreased by 44.54% within this period. Changes in seasonal stream flow due to LULC were assessed by defining dry and wet seasons. The results showed that from year 2000 to year 2013, the dry season discharge has increased by 6% whereas the discharge of wet season has increased by 1%. The changes in stream flows components such us surface run-off (SURF_Q), lateral flow (LAT_Q) and ground water contribution to stream flow (GW_Q) and also on evapotranspiration (ET) changes due to LULC was evaluated. The results showed that between the year 2000 and 2013, SURF_Q and LAT_Q have respectively increased by 27% and 19% while GW_Q has decreased by 6% while ET has increased by 4.59%. The resultant effects are that the water yield to stream flow has increased by 4%. View Full-Text
Keywords: rainfall variability; Mann-Kendall test; Sens’s slope; LULC; SWAT model; Black Volta; stream flow rainfall variability; Mann-Kendall test; Sens’s slope; LULC; SWAT model; Black Volta; stream flow
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Akpoti, K.; Antwi, E.O.; Kabo-bah, A.T. Impacts of Rainfall Variability, Land Use and Land Cover Change on Stream Flow of the Black Volta Basin, West Africa. Hydrology 2016, 3, 26.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Hydrology EISSN 2306-5338 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top