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Evaluation of Methods of Peak Runoff Determination using Catchment Characteristics for Jere Sub-basin, Gurara River Basin, North Central Nigeria
- Source :
- The Journal of Engineering Research, Vol 15, Iss 1, Pp 26-41 (2018)
- Publication Year :
- 2018
- Publisher :
- Sultan Qaboos University, 2018.
-
Abstract
- This paper presents the evaluation of methods of determination of peak runoff for an ungauged catchment. The present study made use of Geographical Information System (GIS) for the morphometric analysis of four sub-catchments within Jere sub-basin in Gurara Basin, Nigeria. Various morphometric parameters were computed and analyzed as sub-basin characteristics are important factors in determining the runoff. Three methods of peak runoff estimation were used to determine peak runoff of the study area for four return periods. The results of the peak runoff estimation based on rational method for the four sub-catchments for 25-year, 50-year, 75-year and 100-year return periods varied between 224m3/s and 1036m3/s, while the results for the SCS method varied between 105.3m3/s and 162.05m3/s and the results from the Cypress Creek method varied between 22.8m3/s and 86.55m3/s. The results obtained from the three methods showed that there are significant differences in the peak runoff results and also there are significant differences in the peak runoff results for the different return periods.
- Subjects :
- 0106 biological sciences
Geographic information system
Drainage basin
runoff
Structural basin
Runoff curve number
01 natural sciences
Rational method
geographic information system
sub-basin
Digital elevation model
Hydrology
geography
geography.geographical_feature_category
business.industry
North central
General Engineering
return periods
lcsh:TA1-2040
digital elevation model
morphometric parameters
Environmental science
sub-catchment
lcsh:Engineering (General). Civil engineering (General)
business
Surface runoff
010606 plant biology & botany
Subjects
Details
- ISSN :
- 17266742 and 17266009
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- The Journal of Engineering Research [TJER]
- Accession number :
- edsair.doi.dedup.....cfcd4b4ad2ed81ed2d17ec18eb7838e3