Analysing the temporal water quality dynamics of Lake Basaka, Central Rift Valley of Ethiopia

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7 Citations (Scopus)

Abstract

This study presents the general water quality status and temporal quality dynamics of Lake Basaka water in the past about 5 decades. Water samples were collected and analysed for important physico-chemical quality parameters following standard procedures. The result showed that Lake Basaka water is highly saline and alkaline and experiencing a general reducing trends in ionic concentrations of quality parameters due to the dilution effect. About 10-fold reduction of total ionic concentration occurred in the Lake over the period of 2 decades (1960-1980). There was a sharp and fast decline in EC, Cl, SO4, Na, and K ions from early 1960s up to the late 1980s, and then became relatively stable. Some ions (eg. Na, Ca, Mg, Cl, SO4) are showing increment in recent years. This characteristics of the lake water is terrible in relation to its potential to inundate the nearby areas in the near future. The expansion of such quality water has negative effects on the water resources of the region, especially soil quality, drainage and groundwater, in terms of salinity, sodicity and specific ion toxicity. The regimes of soil moisture, solute and groundwater could be affected, concurrently affecting the productivity and sustainability of the sugar estate. Thus, there is an urgent need to identify the potential sources of water and chemicals to the lake and devise an appropriate mitigation and/or remedial measures.

Original languageEnglish
Article number012057
JournalIOP Conference Series: Earth and Environmental Science
Volume52
Issue number1
DOIs
Publication statusPublished - 13 Feb 2017
EventInternational Conference on Energy Engineering and Environmental Protection, EEEP 2016 - Sanya, China
Duration: 21 Nov 201623 Nov 2016

ASJC Scopus subject areas

  • General Environmental Science
  • General Earth and Planetary Sciences

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