About the Authors

Muluken Azage

mulukenag@yahoo.com

Affiliation Ethiopian Institute of Water Resources, Addis Ababa University, Addis Ababa, Ethiopia

Abera Kumie

Affiliation School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia

Alemayehu Worku

Affiliation School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia

Amvrossios C. Bagtzoglou

Affiliation Department of Civil and Environmental Engineering, School of Engineering, University of Connecticut, Storrs, CT 06269, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MA AK AW AB. Performed the experiments: MA AK AW AB. Analyzed the data: MA AK AW AB. Contributed reagents/materials/analysis tools: MA AK AW AB. Wrote the paper: MA AK AW AB. Was involved in proposal development, data collection, data management, analysis, and write up of the article: MA. Were involved in proposal development, data analysis, and writing and editing the manuscript: AK AW AB. Read and approved the final manuscript: MA AK AW AB.