Abstract:
The main objective of the study is to assess the groundwater quality based on bacterial properties by checking the presence, absence or concentrations of indicator bacteria in study area. Twenty (20) water samples were collected during field trips for bacteriological analyses, from hand pumps and boreholes which distributed throughout the study area; the analyses have been done at Water and Environmental Sanitation Project laboratory (WES) at Al Fashir town. All water samples were analyzed, according to standard methods for water examination by using Hydrogen sulfide (H2S) test. GIS technique was used to construct water sample location sites and Strater Demo-4 used for great cross-sections. Surfer-10 software used for constructs maps of contours water level, wells yield and the groundwater flow direction. Electronic Automatic Logger and water level indicators devices used for measured groundwater level. The results of all samples of water show that have negative results/no indication of contamination and the groundwater in the study area is good and excellent for domestic uses. The groundwater bearing formation comprises mainly of the basement rocks (weathered and fractured) and alluvial deposits of valley courses. The groundwater level usually reaches its maximum level ranges from 3.5 to 5 m, whereas, reaches a maximum drawdown of 5 m below ground surface. The annual discharge rate is calculated as 212211m3/year, and the result indicates that the renewable storage capacity of the aquifer is very low compared to the annual needs 440920 m3/year. |
