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Evaluation of Shallow Ground Water Recharge and Its Potential for Dry Season Irrigation at Brante Watershed, Dangila, Ethiopia

  • Daniel G. EsheteEmail author
  • Seifu A. Tilahun
  • Mamaru A. Moges
  • Schmitter Petra
  • Zoi Dokou
  • Berhanu G. Sinshaw
  • Enguday B. Atalay
  • Muluedel A. Moges
  • Dagne Y. Takele
  • Wondale A. Getie
Conference paper
  • 40 Downloads
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 308)

Abstract

The estimation of crop water demand and understanding groundwater use is an essential component for managing water effectively. Groundwater is the main source of irrigation in Dangila. However, there is a lack of information in the study area on amount of irrigated land, irrigation water use and demand, groundwater recharge. Consequently, the objective of this study is to determine the groundwater recharge and its potential for dry season irrigation. The study was conducted in Brante watershed of 5678 ha located in Dangila woreda, Ethiopia. Water table data from twenty-five wells and discharge data at the outlet of the watershed used to assess recharge amount in 2017. To calculate irrigation water demand, CROPWAT model was used. Questionnaires were undertaken to assess groundwater use. A KOMPSAT-2 image was used to map shallow groundwater irrigated vegetables in February 2017. From the soil water balance method, the annual groundwater recharge was 17,717,690 m3 which is 15.8% of annual rainfall, and recharge amount of 14,853,339 m3 was obtained using water table fluctuation method. From satellite image classification the area coverage of dry season irrigated vegetables (onion, tomato, pepper) below the main road was 4.02 ha. From CROPWAT result, seasonal irrigation water demand for onion, Tomato, and pepper was 333,314, and 261 mm respectively. However, the questioners result indicates that farmers apply in average 20% more water than crop water demand. In the watershed 60,150 m3, 62,750 m3 and 41,603 m3 of water was abstracted for irrigation, domestic and livestock use respectively. The ratio of groundwater use to groundwater recharge at the watershed scale was found to be only 1%. This study indicates that the current use of groundwater was sustainable. For better improvement of household livelihood irrigation can be further expand using ground water. Future work should be performed to determine if the method outlined in this research could be used to accurately estimate available water potential.

Keywords

Recharge Brante watershed Water balance Ethiopia 

Notes

Acknowledgments

The corresponding author would like to thanks the Almighty Lord, Jesus Christ and his mother Saint Mary, for his mercy, Grace, and Guidance for all my life and the achievement of this work. I give special thanks for SIPS-IN project, Ethiopia Coordinator for providing the satellite image and support through my study. My thanks also goes to PIRE project for their funding for data collection. I have no word to say thank you for my main advisor who gives me genuine help, inspiration, and continuous advice for the completion of my work in any time regardless of the time allocated for consultation. My grateful thanks also go to the co- advisor who sacrifices his valuable time to give me critical and constructive comments. And finally Gondar University and Bahir Dar University are acknowledged for giving the chance for pursuing my master study.

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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2020

Authors and Affiliations

  • Daniel G. Eshete
    • 1
    • 3
    Email author
  • Seifu A. Tilahun
    • 1
  • Mamaru A. Moges
    • 1
  • Schmitter Petra
    • 2
  • Zoi Dokou
    • 4
  • Berhanu G. Sinshaw
    • 3
  • Enguday B. Atalay
    • 1
  • Muluedel A. Moges
    • 1
  • Dagne Y. Takele
    • 1
  • Wondale A. Getie
    • 1
  1. 1.School of Civil and Water Resources Engineering, Bahir Dar Institute of TechnologyBahir Dar UniversityBahir DarEthiopia
  2. 2.International Water Management Institute (IWMI)YangonMyanmar
  3. 3.Department of Hydraulic and Water Resources Engineering, Gondar Institute of TechnologyGondar UniversityGondarEthiopia
  4. 4.Department of Civil and Environmental EngineeringUniversity of ConnecticutMansfieldUSA

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