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Environmental Monitoring and Assessment

, Volume 186, Issue 9, pp 5363–5379 | Cite as

Hydrologic modelling for Lake Basaka: development and application of a conceptual water budget model

  • Megersa O. Dinka
  • Willibald Loiskandl
  • Julius M. Ndambuki
Article

Abstract

Quantification of fluxes of water into and out of terminal lakes like Basaka has fundamental challenges. This is due to the fact that accurate measurement and quantification of most of the parameters of a lake’s hydrologic cycle are difficult. Furthermore, quantitative understanding of the hydrologic systems and hence, the data-intensive modelling is difficult in developing countries like Ethiopia due to limitation of sufficient recorded data. Therefore, formulation of a conceptual water balance model is extremely important as it presents a convenient analytical tool with simplified assumptions to simulate the magnitude of unknown fluxes. In the current study, a conceptual lake water balance model was systematically formulated, solved, calibrated, and validated successfully. Then, the surface water and groundwater interaction was quantified, and a mathematical relationship developed. The overall agreement between the observed and simulated lake stage at monthly time step was confirmed based on the standard performance parameters (R 2, MAE, RMSE, E f). The result showed that hydrological water balance of the lake is dominated by the groundwater (GW) component. The net GW flux in recent period (post-2000s) accounts about 56 % of the total water inflow. Hence, GW plays a leading role in the hydrodynamics and existence of Lake Basaka and is mostly responsible for the expansion of the lake. Thus, identification of the potential sources/causes for the GW flux plays a leading role in order to limit the further expansion of the lake. Measurement of GW movement and exchange in the area is a high priority for future research.

Keywords

Basaka Lake Calibration-validation Conceptual model Fluxes Simulation Water budget 

Notes

Acknowledgment

The first author acknowledges OeAD (Austrian Academic Exchange) for the doctoral scholarship, and the Ethiopian Sugar Development Agent (currently called Ethiopian Sugar Corporation), specifically Research Directorates, for their support during data collection.

References

  1. Abd Ellah, R. G. (2009). Using hydrological and meteorological data for computing the Water Budget in Lake Qarun, Egypt. World Journal of Fish and Marine Sciences, 1(1), 46–50.Google Scholar
  2. Alemayehu, T., Ayenew, T., & Kebede, S. (2006). Hydrochemical and lake level changes in the Ethiopian Rift. Journal of Hydrology, 316(1–4), 290–300.CrossRefGoogle Scholar
  3. Awulachew, S. B. (2006). Modelling natural conditions and impacts of consumptive use and sedimentation of Lakes Abaya and Chamo, Ethiopia. Lakes & Reservoirs: Research and Management, 11, 73–82.CrossRefGoogle Scholar
  4. Ayenew, T. (1998). The hydrological system of the Lake District basin. Central Main Ethiopian Rift. Ph.D. Thesis, Free University of Amsterdam. The Netherlands. 259 p.Google Scholar
  5. Ayenew, T. (2004). Environmental implications of changes in the levels of lakes in the Ethiopian rift since 1970. Regional Environmental Change, 4, 192–204.CrossRefGoogle Scholar
  6. Ayenew, T. (2007). Water management problems in the Ethiopian rift: challenges for development. Journal of African Earth Sciences, 48, 222–236.CrossRefGoogle Scholar
  7. Ayenew, T., & Becht, R. (2008). Comparative assessment of the water balance and hydrology of selected Ethiopian and Kenyan Rift Lakes. Lakes & Reservoirs: Research and Management, 13(3), 181–196.CrossRefGoogle Scholar
  8. Ayenew, T., Becht, R., van Lieshout, A, Gebreegziabher, Y., Legesse, D., & Onyando, J. (2007). Hydrodynamics of topographically closed lakes in the Ethio-Kenyan Rift: The case of lakes Awassa and Naivasha. Journal of Spatial Hydrology, 7(1), 81–100.Google Scholar
  9. Belay, E. A. (2009). Growing lake with growing problems: Integrated hydrogeological investigation on Lake Beseka, Ethiopia. Ph.D Dissertation. Bonn: Universitäat Bonn pub.Google Scholar
  10. Chikita, K. A., Nishi, M., Fukuyama, R., & Hamahara, K. (2004). Hydrological and chemical budgets in a volcanic caldera lake: Lake Kussharo, Hokkaido, Japan. Journal of Hydrology, 291, 91–114.CrossRefGoogle Scholar
  11. Chow, V. T., Madiment, D. R., & Mays, L. W. (1988). Applied hydrology. New York: McGraw-Hill Pub.Google Scholar
  12. Dilnesaw, A. (2006). Modelling of Hydrology and Soil Erosion of Upper Awash River Basin. PhD Thesis. University of Bonn, Germany.Google Scholar
  13. Dingman, S. L. (2002). Physical hydrology (2nd Ed.). Prentice-Hall Inc. ISBN 0-13-099695-5.Google Scholar
  14. Dinka, M. O. (2010). Analyzing the extents of Basaka Lake expansion and soil and water quality status of Matahara Irrigation Scheme, Awash Basin (Ethiopia). PhD Dissertation. Vienna: BOKU University of Natural Resource and Applied Life Sciences.Google Scholar
  15. Dinka, M. O. (2012a). Analysing decadal land use⁄cover dynamics of the Lake Basaka catchment (Main Ethiopian Rift) using LANDSAT imagery and GIS. Lakes & Reservoirs: Research and Management, 17, 11–24.CrossRefGoogle Scholar
  16. Dinka, M. O. (2012b). Analysing the extents (size and shape) of Lake Basaka expansion (Main Ethiopian Rift Valley) using remote sensing and GIS. Lakes & Reservoirs: Research and Management, 17, 131–141.CrossRefGoogle Scholar
  17. Elias, E. (2008). Pastoralists in Southern Ethiopia: dispossession, access to resources and dialogue with policy makers, DCG Report No.53.Google Scholar
  18. Ferguson, H. L., & Znamensky, V. A. (1984). Methods of Computation of Water Balance of Large Lakes and Reservoirs Volume II Case Studies. A Contribution to IHP Studies and Reports in Hydrology 31, UNESCO Publications, Paris.Google Scholar
  19. Gebre, A. (2009). Pastoralism under pressure: Land alienation and pastoral transformations among the Karayyuu of Eastern Ethiopia, 1941 to present. Maastricht: Shaker publishing.Google Scholar
  20. Gizaw, B. (1996). The origin of high carbonate and fluoride concentrations in waters of the MER Valley, East African Rift system. Journal of African Earth Science 22(4), 391–402.Google Scholar
  21. Goerner, A., Jolie, E., & Gloaguen, R. (2009). Non-climatic growth of the saline Lake Beseka, Main Ethiopian Rift. Journal of Arid Environments, 73, 287–295.CrossRefGoogle Scholar
  22. Gupta, K. P., & Panigrahy, S. (2009). Predicting the spatio-temporal variation of runoff generation in India using Remotely Sensed input and SCS-CN model. Current Science, 95(1), 1580–1587.Google Scholar
  23. Halcrow W. (1978). The study of Beseka Lake Levels. Report for the Government of Ethiopia. Awash Valley Development Agency. 83 p.Google Scholar
  24. Healy, R. W., Winter, T. C., LaBaugh, J. W., & Franke, O. L. (2007). Water budgets–foundations for effective water-resources and environmental management. U.S. Geological Survey Circular 1308, 90 p.Google Scholar
  25. Ito, I., Momii, K., & Nakagawa, K. (2009). Modeling the water budget in a deep caldera lake and its hydrologic assessment: Lake Ikeda, Japan. Agricultural Water Management, 96, 35–42. doi: 10.1016/j.agwat.2008.06.009.CrossRefGoogle Scholar
  26. Kebede, E., Gebramariam, Z., & Ahlgren, A. (1994). The Ethiopian rift valley lakes. Chemical characteristics along a salinity-alkalinity series. Hydrobiologia 288, 1–2.Google Scholar
  27. Kebede, S., Travi, Y., Asrat, A., Alemayehu, T., Ayenew, T., & Tessema, Z. (2008). Groundwater origin & flow along selected transects in Ethiopian rift volcanic aquifers. Journal of Hydrology, 16(1), 55–73.Google Scholar
  28. Klemperer, S. L., & Cash, M. D. (2007). Temporal geochemical variation in Ethiopian Lakes Shala, Arenguade, Awasa, and Beseka: possible environmental impacts from underwater and borehole detonations. Journal of African Earth Sciences, 48, 174–198.CrossRefGoogle Scholar
  29. Lee, T. M., & Swancar, A. (1997). Influence of evaporation, ground water and uncertainty in the hydrologic budget of Lake Lucerne, a seepage lake in Polk County, Florida. U. S. Geological Survey Water-Supply Paper 2439.Google Scholar
  30. Legesse, D., Vallet-Coulomb, C., & Gasse, F. (2004). Analysis of hydrological responses of a tropical terminal Lake, Lake Abiyata (Main Ethiopian Rift Valley) to changes in climate and human activities. Hydrological Processes, 18, 487–504.CrossRefGoogle Scholar
  31. Mace, R. E., Austin, B., Angle, E. S., & Batchelder, R. (2007). Surface water and groundwater—together again? USA: State Bar of Texas, 8th Annual changing face.Google Scholar
  32. Mono Basin Report (2010). The Mono Lake water balance model (Chapter II), http://www.monobasinresearch.org/images/vorster/ch2.pdf. Accessed 20 Feb 2010.
  33. Moore, J. & Runkles. (1968). Evaporation from brine under controlled laboratory conditions. Texas Water Development Board Report No. 77.Google Scholar
  34. Motz, L. H., Sousa, G. D., & Annable, M. D. (2001). Water budget and vertical conductance for Lowry (Sand Hill) Lake in north-central Florida, USA. Journal of Hydrology 250, 131–148.Google Scholar
  35. MoWR (Minstry of Water Resources) (1998). Lake Basaka study and design project (Inception Report). Federal Democratic Republic of Ethiopia. MoWR. Addis Ababa.Google Scholar
  36. Nachiappan, R., Kumar, B., & Manickavasagam, R. M. (2002). Estimation of subsurface components in the water balance of Lake Nainital (Kumaun Himalaya, India) using environmental isotopes. Journal of Hydrological Sciences Hydrohgiquees, 47, 41–54.CrossRefGoogle Scholar
  37. Nash, J. E., & Sutcliffe, J. V. (1970). River flow forecasting through conceptual models. A discussion of principles. Journal of Hydrology, 10, 282–290.CrossRefGoogle Scholar
  38. Shanahan, M. T., Overpeck, T. J., Sharp, E. W., Scholz, A. C., & Arko, A. C. (2007). Simulating the response of a closed-basin lake to recent climate changes in tropical West Africa (Lake Bosumtwi, Ghana). Hydrological Processes, 21, 1678–1691.CrossRefGoogle Scholar
  39. Sophocleous, M. (2002). Interactions between groundwater and surface water: the state of the science. Journal of Hydrology, 1, 52–67.Google Scholar
  40. Talling, J. F., & Talling, I. B. (1965). The chemical composition of African lake waters. Int. revue. ges. Hydrobiol 50, 421–463.Google Scholar
  41. Tessema, Z. (1998). Hydrochemical and water balance approach in the study of high water level rise of Lake Beseka. MSc thesis. Birmingham: University of Birmingham press.Google Scholar
  42. USDA-SCS (Soil Conservation Service) (1972). USDA SCS National Engineering Handbook, Section 4: Hydrology. Washington, DC.Google Scholar
  43. Vallet-Coulomb, C., Legesse, D., Gasse, F., Travi, Y., & Chernet, T. (2001). Lake evaporation estimates in tropical Africa (Lake Ziway, Ethiopia). Journal of Hydrology, 245, 1–18.CrossRefGoogle Scholar
  44. Winter, T. C., Harvey, J. W., Franke, O. L., & Alley, W. M. (1998). Groundwater and surface water a single resource. Denver: US. Geological Survey Circular 1139.Google Scholar
  45. WWDSE (Water Works, Design and Supervision Enterprise). (1999). Study of Lake Beseka (main report 1). Addis Ababa: Submitted to Ministry of Water Resources.Google Scholar
  46. Yin, X., & Nicholson, S. E. (1998). The water balance of Lake Victoria. Journal of Hydrological Sciences, 43(5), 789–811.CrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Megersa O. Dinka
    • 1
    • 2
  • Willibald Loiskandl
    • 3
  • Julius M. Ndambuki
    • 1
  1. 1.Department of Civil Engineering, Faculty of Engineering and the Built EnvironmentTshwanne University of TechnologyPretoriaSouth Africa
  2. 2.School of Water Resources and Environmental Engineering, Institute of TechnologyHaramaya UniversityHaramayaEthiopia
  3. 3.Department of Water, Atmosphere and EnvironmentBOKU University of Natural Resources and Applied Life SciencesVienaAustria

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