Precipitation controlled spatial variations in groundwater quality indices-suitability for drinking and irrigation purposes in the basalts of South India
| Autor: | Soumya Siva B, Ravindra B. Kamble |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Hydrology
Irrigation 0208 environmental biotechnology Alkalinity Weathering 02 engineering and technology 010501 environmental sciences Structural basin 01 natural sciences Arid 020801 environmental engineering Salinity General Earth and Planetary Sciences Precipitation Geology Groundwater 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Arabian Journal of Geosciences. 10 |
| ISSN: | 1866-7538 1866-7511 |
| DOI: | 10.1007/s12517-017-2887-2 |
| Popis: | Regional study on the impact of variations in input rainfall over groundwater quality and its suitability for utilitarian purposes is essential for its extraction and management. Water chemistry from 456 observations wells for 2007–2011 period in hard rock Basaltic terrain of Upper Godavari basin is supported with 8 field samples (in 2014) in this analysis. Based on mean annual rainfall (MAR), four narrow climatic zones are identified in the basin, defined as “humid” (MAR > 1600 mm), “sub-humid” (1600–1000 mm), “semi-arid” (1000–600 mm), and “arid” (MAR 600 mg/L) and not acceptable for drinking. Suitability of groundwater for irrigation is studied using sodium percentage (Na %), Wilcox diagram, sodium absorption ratio (SAR), US salinity diagram, residual sodium carbonate (RSC), permeability index (PI), Kelly’s ratio (KR), ancd magnesium absorption ratio (MgAR). Na % in four zones is 75% (class 1). KR varied from 0.05 to 12.81, with 70–80% of the area having KR |
| Databáze: | OpenAIRE |
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