Predicting the Aquifer Characteristic in the Headquarters of Ndokwa Land

Oseji, Julius Otutu; Ofomola, Merrious Oviri

doi:10.3923/ojesci.2010.35.37

Cited by 3 publications

(5 citation statements)

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“…Geological setting of the study area Several workers have published detailed information on the geological setting of the study area (Allen 1965;Oseji and Ofomola 2010). The communities fall within the oilrich region of the Niger Delta province, Nigeria.…”

Section: Location and Accessibilitymentioning

confidence: 99%

“…The communities fall within the oilrich region of the Niger Delta province, Nigeria. The subsurface geology comprises of three lithostratigraphic units ranging from the Akata Formation at the bottom, the Agbada Formation at the middle and the Benin Formation at the top (Allen 1965;Short and Stauble 1967;Avbovbo 1978;Evamy et al, 1978;Doust and Omatsola 1990;Oseji and Ofomola 2010;Ogbe et al, 2013;Ocheli et al 2017Ocheli et al , 2018. The topmost quaternary deposits within the study area are classified to be coastal plain sands, sambreiro, Warri deltaic plain deposits encapsulated by mangrove, wooded back swamps, freshwater swamp and meander belts (Allen 1965;Oseji and Ofomola 2010;Ocheli et al 2017Ocheli et al , 2018.…”

Section: Location and Accessibilitymentioning

confidence: 99%

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Appraising the risk level of physicochemical and bacteriological twin contaminants of water resources in part of the western Niger Delta region

Ocheli

Otuya

Umayah

2020

Environ Monit Assess

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This study was carried out to assess the physicochemical and bacteriological contaminants of surface, shallow well and municipal borehole waters in part of the western Niger Delta as a way of safeguarding public health against waterborne diseases. A total of 72 water samples collected from the study area were analysed and their results show that the pH average value ranges from 6.2 in the dry to 8.5 in the rainy seasons for surface water, 6.6 and 8.3 for shallow well water and 6.5 to 8.4 for borehole water. The turbidity in surface water varies from 8.1 to 26.2 Formazin Attenuation Unit (FAU), 0.3 to 2.9 FAU in shallow well water and 0.4 to 4.8 FAU in borehole water. Electrical conductivity (EC) value varies from 1010 to 1840 μs/cm for surface water, 201 to 950 μs/cm for shallow well water and 670 to 1650 μs/cm for borehole water. Total dissolved solids range from 0.1 to 2.6 mg/l in surface water, 0.2 to 4.1 mg/l in shallow well water and 0.3 to 4.4 mg/l in borehole water. The value of the total hardness ranges from 44 to 120 mg in surface water, 46 to 96 mg in shallow well water and 70 to 130 mg in borehole water. The nitrate value ranges from 1.1 to 10.6 mg in surface water, 3.0 to 8.4 mg in shallow well water and 3.7 to 9.6 mg in borehole water. The value of sulphate content varies from 4.6 to 38.5 mg in surface water, 6.2 to 34.8 mg in shallow well water and 5.7 to 55.7 mg in borehole water. The value of phosphate concentrations in surface water varies from 1.0 to 9.0 mg, 0.7 to 3.4 mg in shallow well water and 1.0 to 4.7 mg in borehole water. The bacteriological analysis using the membrane filtration technique revealed the presence of faecal bacteria and total coliform counts. The presence of the analysed twin contaminants in the studied water resources reduced their water quality. The physicochemical and bacteriological data were subjected to statistical and correlation tests. It was concluded that their concentration levels were independent of intra-seasonal changes. The likely natural and artificial sources of contaminants are run-offs from fertilized lands, septic tanks, industrial discharges, sewage and waste disposal, algae blooms and erosion from natural deposits. The inherent risk is water-related diseases such as waterborne diseases, water-washed diseases, water-based diseases and diseases transmitted by water-related insect vectors. Water resources should be protected through proper sanitation systems, limiting of up-stream discharges, maintenance of wellheads, boiling and municipal water treatment plants. Educational advice should be given to the inhabitants on the dangers posed by continuous drinking of contaminated water. These measures will prevent disease outbreak and public health burden in the area. Environ Monit Assess (2020) 192: 324

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Section: Location and Accessibilitymentioning

confidence: 99%

Section: Location and Accessibilitymentioning

confidence: 99%

Appraising the risk level of physicochemical and bacteriological twin contaminants of water resources in part of the western Niger Delta region

Ocheli

Otuya

Umayah

2020

Environ Monit Assess

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“…A total of nineteen (19) VES were taken within the study area. Of these, eight (8), ten (10) and one…”

Section: Electrical Resistivity Methodsmentioning

confidence: 99%

“…[8] and [9] used resistivity data and overburden thickness to evaluate the groundwater potential in a basement complex terrain. Also, [10] utilized resistivity data and local geology to evaluate the groundwater potential in a deltaic plain deposit. Furthermore, researchers such as [11] [12] and [13] also used the resistivity method in their studies within the Ajali Formation, however, the identification of aquitard units within the formation by [14] and failure of boreholes in some of the area prompted the use of SP logs to validate the results from the resistivity technique.…”

Section: Introductionmentioning

confidence: 99%

Integrated Geological and Geophysical Mapping for Groundwater Potential Studies at Ekwegbe-Agu and Environs, Enugu State, Nigeria

Ugbor,

Ogbodo,

Eze

2024

OJG

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The study integrates both the geological and geophysical mapping techniques for groundwater potential studies at Ekwegbe-Agu and the environs, Enugu state, Nigeria for optimal citing of borehole. Located in the Anambra Basin between latitudes 6˚43'N and 6˚47'N and longitudes 7˚28'E and 7˚32'E, it is stratigraphycally underlain by, from bottom to top, the Enugu/Nkporo, Mamu and Ajali Formation respectively, a complex geology that make citing of productive borehole in the area problematic leading to borehole failure and dry holes due to inadequate sampling. The study adopted a field and analytic sampling approach, integrating field geological, electrical resistivity and self-potential methods. The software, SedLog v3.1, InterpexIx1Dv.3, and Surfer v10 were employed for the data integration and interpretation. The result of the geological field and borehole data shows 11 sedimentary facies consisting of sandstone, shales and heterolith of sandstone/shale, with the aquifer zone mostly prevalent in the more porous sand-dominated horizons. Mostly the AK and HK were the dominant curve types. An average of 6 geo-electric layers were delineated across all transects with resistivity values ranging from 25. 42 -105.85 Ωm, 186.38 -3383.3 Ωm, and 2992 -6286.4 Ωm in the Enugu, Mamu and Ajali Formations respectively. The resistivity of the main aquifer layer ranges from 1 to 500 Ωm. The aquifer thickness within the study area varies between 95 and 140 m. The western and northwestern part of the study area which is underlain mainly by the Ajali Formation showed the highest groundwater potential in the area and suitable for citing productive boreholes.

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“…Groundwater is one of the precious hidden resources and it is ubiquitously distributed in earth. It is stored in the subsurface sedimentary and crystalline rock formation between pore spaces, fractures and joints [1] . Globally, groundwater contributes 36%, 42% and 27% of water for domestic, agricultural and industrial usages [2] .…”

Section: Introductionmentioning

confidence: 99%

Efficacy of hydrological investigation in Karumeniyar river basin, Southern Tamil Nadu, India using vertical electrical sounding technique: A case study

2021

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In the Karumeniyar river basin, the groundwater demand increases for irrigation, industrial and larger per capita needs, and the recent year's groundwater table is drastically falling due to both natural and anthropogenic activities. In this context, a study on geophysical vertical electrical sounding (VES) using Schlumberger configuration has been carried out across 72 locations in the Karumeniyar river basin to demarcate the subsurface geoelectrical parameters and to identify the groundwater potential zone along with aquifer protective capacity. The acquired data were inverted using the 1D (resistivity variation with respect to depth) inversion approach IPI2Win demonstrated the presence of three to six subsurface geoelectrical layers in the study area with H type sounding curve being dominant. Furthermore, the deciphered result from VES is cross-validated with lithology data of four wells in the study area. Based on the interpreted results the parameters such as longitudinal conductance, overburden thickness, reflection coefficient and basement resistivity were calculated. It revealed that 36 VES location signifies good to moderate aquifer protective capacity. According to the reflection coefficient value and overburden thickness, the basin was divided into four distinct groundwater potential zones as high (42%), medium (38%), low (15%) and very low (5%). The inverse Distance Weighting (IDW) interpolation method is adopted to generate the spatial distribution maps in ArcGIS environment. The findings of the present study provide the vital geo-database for groundwater potential zones in the Karumeniyar river basin and have important implications for designing, intendance and management of sustainable groundwater resources. • Vertical Electrical Sounding method is a noninvasive, low cost and effective method for locating groundwater potential zone. • It measures the vertical wise variation of subsurface resistivity distribution based on surface measurement. • This technique provides a quantitative evaluation of different subsurface layers.

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Predicting the Aquifer Characteristic in the Headquarters of Ndokwa Land

Cited by 3 publications

References 0 publications

Appraising the risk level of physicochemical and bacteriological twin contaminants of water resources in part of the western Niger Delta region

Appraising the risk level of physicochemical and bacteriological twin contaminants of water resources in part of the western Niger Delta region

Integrated Geological and Geophysical Mapping for Groundwater Potential Studies at Ekwegbe-Agu and Environs, Enugu State, Nigeria

Efficacy of hydrological investigation in Karumeniyar river basin, Southern Tamil Nadu, India using vertical electrical sounding technique: A case study

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