Akpen state Benue - An Overview
Akpen state Benue - An Overview
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The ability of the aquifer to transmit water in economic portions in wells depend on the aquifer characteristics which consist of Hydraulic conductivities(K), Transmissivity(T) and Storativity(S). All have been identified making use of Jacobs straight line process. Aquifer qualities supplies details to determine the assorted h2o making models for groundwater prospecting and management from the aquifer technique. The purpose of the examine is to determine the aquifer features in elements of Lere, Kaduna in North western Nigeria. Pump take a look at knowledge of 25 boreholes within the research location ended up utilized to determine the aquifer qualities of the area.
The aim of the review was to ascertain the aquifer parameters in Erho, Nigeria. This was completed by drilling 3 exam wells and three observation wells in the analyze location. Drinking water was pumped from the check wells at a constant amount although the drawdown while in the observation wells was resolute as a perform of your time. The info received have been subjected to graphical and analytical analysis utilizing the Cooper-Jacob approach.
A blended classification of magnitude and variation of transmissivity is proposed, Using the intention to standardize the expression, comparison, and representation of transmissivity. This classification also allows its compact and unambiguous depiction in tables and maps.
The method Within this review was made within the qualifications that even though there are several components that account for flooding, rainfall attribute or styles continue being the first driver of flooding during the tropics. Therefore, rainfall craze analysis was executed to the Makurdi drainage basin working with rainfall facts from 1980 to 2014 to discover the flood bearing potentials of the rainfall. Evaluation of variance (ANOVA), a few 12 months moving necessarily mean, simple linear regression, rainfall anomaly index and Pearson Moment correlation were being useful for the Evaluation. The regression line equation (y= three.414 + 1105), displays that Makurdi drainage basin has experienced increase in rainfall. The end result with the rainfall anomaly index demonstrates that Makurdi drainage basin was characterized by larger extent of very soaked situations in 1984, 1998 and 1999.
H2o borehole failures in Nigeria's middle Benue Trough are attributable to imprecise aquifer features. This research used empirical information to know hydraulic parameters, anticipate regional groundwater potential, and clarify borehole failures in difficult geological locations. A total of 89 VES stations and quantitative information interpretation were demanded to ascertain the geoelectric Qualities beneath Just about every station. Aquifer levels had been delineated and their resistivity and thickness were merged using geo-environment particular relations to yield transmissivity and hydraulic conductivity for both of those basement complex and sedimentary environments. Success present that aquifer resistivity ranges from 4.
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Determinations of these two constants are almost always linked to quantitative scientific tests of floor‐water complications.
The yr 1980 and 2012 ended up characterised by pretty moist issue and 2009 with moderately damp situation. The result of the Pearson Moment Correlation was insignificant implying that raising rainfall features is not the significant explanation for flooding within the basin. Other key variables that could influence flooding in Makurdi drainage basin include things like inflow from vast catchment / Lagdo Dam in Cameroun and urbanization. The examine suggests that Federal Government checking companies which include NIHSA and NIMET ought to strengthen on their own accuracy with regards to river discharge and Severe rainfall information and predictions and to also goal key nearby flood vulnerability spots for precision and prioritization of landuse.
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Examination consequence reveals which the examination is significance with p-value of 0.006 and coefficient of determination-R2 price of 0.581. The design developed was used to make predictions for your period of six several years in advance; which displays ongoing boost in the pattern of rainfall depending on the readily available information. The irregularity inside the pattern of rainfall calls for critical commitment in signing up for the drive for climate change abatement system.
An investigation of rainfall variability within the upper and lower river Niger basin enhancement authority locations, Nigeria
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In this analyze, We've coupled area geophysical system with pumping examination benefits to deliver a inexpensive and productive different in aquifer parameter estimation. Vertical Electrical Sounding (VES) was performed at forty sites while in the research region for your identification on the vertical variation in subsurface lithology and for the characterization from the aquifer procedure of the analyze place. The interpretation from the VES details revealed three to 5 geoelectric units With all the depth to aquifer various from 7 to 108m as well as the resistivity from the saturated layer various amongst 42.
Most pumping checks are interpreted using the classical Theis assumption of enormous-scale homogeneity with many corrections to account for early time actions of drawdown curves. When drawdowns are plotted as opposed to log time, late time data generally delineate a straight line, which happens to be in keeping with Jacob's approximation of Theis' Option but may look stunning in see of the heterogeneity of normal media. The intention of our function is to show that Jacob's method contributes to an excellent approximation of the successful transmissivity of heterogeneous media when constrained to late time details. An assessment of various multiwell pumping exams demonstrates that when drawdown curves from each observation nicely are interpreted individually, they produce extremely related transmissivity T estimates.