Assessment of empirical and regression methods for infilling missing streamflow data in Little Ruaha catchment Tanzania

This study therefore made a contribution by appraising empirical and regression rainfall runoff based methods in the Little Ruaha River catchment, a sub-catchment of the Great Ruaha River sub-basin both within the Rufiji River Basin. The methods employed included simple linear regression (with untransformed and log-transformed data), multiple linear regression (with untransformed and log-transformed data), rainfall-runoff relationship using double mass curve technique, flow duration matching and drainage-area ratio. In addition, rainfall runoff modeling using HBV-Light was done for further comparison. With exception to the rainfall-runoff relationship and HBV-Light model, all other methods relied upon data transfer from donor stations (upstream &downstream station(s)) for infilling a downstream/upstream station. Data quality and consistency checks were performed, and performances of infilling methods were evaluated based on three performance criteria namely Nash-Sutcliffe efficiency coefficient (NSE), Coefficient of determination (R2) and standard error of estimate (SE) during calibration and validation periods. Four gauging stations (2 each upstream and downstream) were separately used to infill artificially created gaps to the target station. Overall, the calibration and validation daily results at 1KA21A indicated that the flow duration matching technique and multiple linear regression methods performed better than other methods with NSE (71%; 93%) and NSE (55%; 75%) r...
Source: Physics and Chemistry of the Earth, Parts ABC - Category: Science Source Type: research

Related Links:

Publication date: July 2020Source: Phytochemistry, Volume 175Author(s): Haiyan Feng, Jihe Tang, Peiliang Zhang, Yu Miao, Tao Wu, Zhihong Cheng
Source: Phytochemistry - Category: Chemistry Source Type: research
Publication date: Available online 8 April 2020Source: Journal of Solid State ChemistryAuthor(s): L.L. Driscoll, E.H. Driscoll, P.R. Slater
Source: Journal of Solid State Chemistry - Category: Chemistry Source Type: research
Publication date: Available online 8 April 2020Source: Journal of Solid State ChemistryAuthor(s): Tao Chen, Jie Ding, Tianyu Liu, Qi Li, Yanping Luo, Longzhang Dong, Hongbin Du, Min Fang, Jianchun Bao, Yong Wu
Source: Journal of Solid State Chemistry - Category: Chemistry Source Type: research
Publication date: Available online 8 April 2020Source: Journal of Solid State ChemistryAuthor(s): Haiyan He, Guojun Wang, Binfeng Shen, Yibin Wang, Zhiyong Lu, Shengping Guo, Jiaxin Zhang, Lu Yang, Quanguo Jiang, Zhenyu Xiao
Source: Journal of Solid State Chemistry - Category: Chemistry Source Type: research
Publication date: Available online 8 April 2020Source: Journal of Solid State ChemistryAuthor(s): Xiaodong Wang, Yanjun Yin, Mingling Li, Yuan Hu
Source: Journal of Solid State Chemistry - Category: Chemistry Source Type: research
Publication date: Available online 7 April 2020Source: Journal of Solid State ChemistryAuthor(s): Shuhao Yang, Matthew Powell, Joseph W. Kolis, Alexandra Navrotsky
Source: Journal of Solid State Chemistry - Category: Chemistry Source Type: research
Publication date: Available online 7 April 2020Source: Journal of Solid State ChemistryAuthor(s): Guorong Wu, Yanyuan Liu, Qingyan Zheng, Zhiwu Yu, Feng Luo
Source: Journal of Solid State Chemistry - Category: Chemistry Source Type: research
Publication date: 15 August 2020Source: Journal of Alloys and Compounds, Volume 832Author(s): Siyi Pan, Zhouhong Yin, Qi Cheng, Guizhi Zhang, Xiaoyuan Yu, Zhenxiao Pan, Huashang Rao, Xinhua Zhong
Source: Journal of Alloys and Compounds - Category: Chemistry Source Type: research
Publication date: 15 August 2020Source: Journal of Alloys and Compounds, Volume 832Author(s): Yijiang Xu, Yun Deng, Daniele Casari, Ragnvald H. Mathiesen, Yanjun Li
Source: Journal of Alloys and Compounds - Category: Chemistry Source Type: research
Publication date: 15 August 2020Source: Journal of Alloys and Compounds, Volume 832Author(s): Peng Peng
Source: Journal of Alloys and Compounds - Category: Chemistry Source Type: research
More News: Chemistry | Databases & Libraries | Physics | Science | Study | Tanzania Health