Classification of transmissivity magnitude and variation in calcarious soft rocks of Bhaskar Rao Kunta Watershed, Nalgonda District, India
March 2014
Pumping test was used for the appraisal and evaluation of groundwater potential and design of well. Pumping tests of the calcarious sedimentary rocks of Bhaskar Rao kunta watershed area were carried out for twenty five selected bore wells for quantitative understanding of the groundwater for crop water requirement and groundwater use efficiency. The tests were carried out independently for short duration under constant...
Assessment of noise pollution of two vulnerable sites of Sylhet city, Bangladesh
March 2014
The study reports the analysis and measurement of the noise levels of CNG refueling Stations and Power Generators of Power Development Board (PDB) induced noise pollution in Sylhet City. For this purpose noise levels have been measured at ten major locations of the city for CNG refueling Stations and in PDB, Kumargaon. Sound levels are measured at different location at different time interval for the respective study...
Flood hazard assessment of River Dep floodplains in North-Central Nigeria
February 2014
Flood is a recurring event that leads to hazards. The probability of a flood occurring is normally investigated followed by flood hazard mapping which defines the areas that are at risk of flood inundation. This study carries out flood hazard assessment for the flood prone areas within the low-lying flat river valley of the River Dep watershed using Remote Sensing (RS) and geographic information system (GIS) for...
Catchment dynamics and its impact on runoff generation: Coupling watershed modelling and statistical analysis to detect catchment responses
February 2014
Catchment response as consequence of changes in vegetation cover and land use management could not be well explained by statistical methods alone. At the same time, long range periodic and trend components of time series are not adequately predicted by watershed modeling. Therefore, joint application of statistical time series analysis and watershed modeling better help to understand the underlying climate variability...
Heavy metals assessment of private drinking water supplies in Ibadan, Nigeria and associated health risks
February 2014
The aim was to measure the concentrations of heavy metals in groundwater obtained from 30 randomly selected domestic wells and 10 stream locations all in Ibadan, Nigeria, compare the results with the World Health Organization guidelines, draw conclusions and make recommendations. Water samples were obtained and analysed for Pb, As, Cd, Zn, Cu, Cr, Fe and Mn. Overall, the minimum concentrations of Pb, As, Cd, Cr and Fe...
Determination of rainfall-recharge relationship in River Ona basin using soil moisture balance and water fluctuation methods
January 2014
A quantitative evaluation of spatial and temporal distribution of groundwater recharge is a pre-requisite for the management of ground water resources system in an optimal manner. The amount of groundwater recharge depends upon the rate and duration of rainfall, as rainfall is the principal means for replenishment of moisture in the soil water system and recharge to ground water. This paper investigated the relationship...
Hydro and solar-pond-chimney power scheme for Qattara Depression, Egypt
January 2014
This study summarizes previous proposals and studies concerning Qattara power projects and gives some details about a new concept, which aims to produce hydropower like all previous proposals, and also extra electric power and fresh water via a site specific solar-pond-chimney system. Sea water from the Mediterranean Sea and re-used water from the end of Rosetta branch would feed an artificial lake in the Qattara...
Groundwater conditions and hydrogeochemistry of the shallow Benin Formation aquifer in the vicinity of Abraka, Nigeria
January 2014
Shallow borehole and dug well data are used in describing groundwater conditions in the vicinity of Abraka in the Nigerian coastal plain. Drill cuttings from ten boreholes show that the Abraka area is underlain by reddish brown unconsolidated sands, followed by a succession of grey- off-white medium grained sands of the Benin Formation. Hydraulic conductivity estimated from grain size analysis of cuttings obtained from...
Strategies and techniques of providing adequate and affordable potable water in rural areas of Nigeria
January 2014
Water is next to air in importance. The World Bank declared water as an economic good while endorsing the international demand for water supply. Human health depends on having access to safe, adequate and reliable water supply. In Africa, and of course in Nigeria, one half of the entire continent’s people (particularly in rural areas/communities), suffer from one or more of the six main diseases associated with...
Integrated water resources management in Iran: Environmental, socio-economic and political review of drought in Lake Urmia
January 2014
In recent years Lake Urmia, the largest saline lake in the Middle East located in northwestern Iran has undergone severe environmental changes. As a result of drought and anthropogenic impacts, the area of the Lake has been shrunk and the water level has been dropped. In this article the environmental, political and socio-economic impacts of drought in Lake Urmia basin has been reviewed and the obstacles regarding...
Assessment of discharge and sediment transport from different forest cover types in lower Himalaya using Soil and Water Assessment Tool (SWAT)
January 2014
The present study was carried out to examine the applicability of Soil and Water Assessment Tool (SWAT) in estimating daily discharge and sediment delivery from mountainous forested watersheds and to assess the impact of forest cover types on stream discharge pattern and sediment load. The study watersheds namely Arnigad and Bansigad, comprising of dense Oak forest (80%) and degraded Oak forest (83%) respectively, are...
An integrated process investigation of self-sustaining incineration in a novel waste incinerator: Drying, pyrolysis, gasification, and combustion of sludge-plastic blends
December 2013
Utilization of waste-water sludge is one of the most difficult processes of environment protection because of the high moisture and contents of harmful substances. Incineration is the effective method of utilization of such waste mater. To deal with these issues more effectively, a novel sludge incineration technology was developed in this study. The results showed sludge drying, pyrolysis, gasification and incineration...
The Role of Mara River Basin Wetland in Reduction of Nitrogen Load to Lake Victoria
December 2013
The role of Mara River basin wetland in reduction of nitrogen load to Lake Victoria was investigated. Reconnaissance survey was carried out to identify the suitable sampling points in the wetland. Transects were developed in the inlet and outlet zones of the wetland through which three sampling points were established at each transect. Data for physical-chemical parameters such as pH, temperature and dissolved oxygen...
Hydrogeochemical Study of Surface Water Resources of Orlu, Southeastern Nigeria
December 2013
Hydrogeochemical assessment of surface water Resources of Orlu and its environs was carried out in order to evaluate the chemical composition and quality profile with respect to the environmental setting of the study area. A total of six samples were collected, from different rivers and streams traversing different communities in the area, and analyzed for major cations and anions as well as trace elements like Fe, Mn,...
Characterization of the top sediment layer in coastal intertidal mudflats from medium-to-coarse resolution satellite imagery and field measurements
December 2013
Intertidal sediments are critically important in controlling intertidal mudflat microphytobenthic primary productivity and the functioning of intertidal ecosystems. This paper demonstrates the possibility of deriving different intertidal sediment properties from coarse-to-medium resolution remote sensing imagery. Supervised and image based classification methods were used to map different substrate types based on the...
Hydro-geoelectric study of Ijare town, southwestern Nigeria
December 2013
Geoelectric study involving fifty four (54) Vertical Electrical Soundings (VES) has been undertaken within Ijare, southwestern Nigeria with the aim of evolving the hydrogeologic setting of the town. Ijare is underlain by the Precambrian Crystalline Basement Complex rocks with inhabited parts of the town underlain by migmatite gneiss and fine-grained biotite granite while inselbergs of older granites suites adjoins the...
Geo-electrical data analysis to demarcate groundwater pockets in Ado – Ekiti, southwest, Nigeria
November 2013
Geo-Electrical Analysis of data obtained from Vertical Electrical Sounding (VES) measurements conducted in Ado-Ekiti has been carried out to demarcate groundwater pockets in the metropolis within the Basement Complex of Southwest, Nigeria. 49 ‘vertical electrical soundings’ were carried out. The layer parameters of resistivity and thickness were determined and used to generate spatial distributions of...
Improving soil surface conditions for enhanced rainwater harvesting on highly permeable soils
November 2013
The harnessing of runoff water from rainfall over land rather than allowing these waters to run into streams and rivers and eventually lost into the sea is attaining some popularity due to the increasing demand for scarce water resources. Sandy soils, especially in arid and semi-arid regions and along some coastal areas of Ghana (from Aflao to Tema New Town) do not generate sufficient rainwater runoff for storage...
Modelling pan evaporation using mean air temperature and mean pan evaporation relationship in middle south Saurashtra Region
November 2013
Evaporation and evapotranspiration are the major parameters in the hydrologic cycle and water resources research. Most precipitation is lost in the form of evaporation and evapotranspiration with the percentage varying from region to region globally. Therefore, accurate estimate of evapotranspiration is needed for numerous management activities and its application in rainfall-runoff models. The reference...
Flow system, physical properties and heavy metals concentration of groundwater: A case study of an area within a municipal landfill site
November 2013
Groundwater within the Olusosun landfill site in Lagos Metropolis was evaluated. Previous research on quality parameters of groundwater in the area made use of equipment of low detection capacity for heavy metals concentrations in water. Also, subsurface flow and significant attenuation of leachate due to horizontal distance between wells and landfill site are yet to be technically elucidated. In the present...
Application of synthetic unit hydrograph methods to construct storm hydrographs
November 2013
Synthetic unit hydrograph methods were used to generate unit hydrographs for the Awun River Basin in Kwara State, Nigeria. The synthetic methods used were those of Snyder’s, Soil Conservation Service (SCS), and Gray’s. The study watershed has a maximum relief of 183 m with an area of 954 km2 and a slope of 0.15%. The unit hydrograph peak flows for the methods employed ranged from 100.15 to 318.65 m3/s while...
Climate smart water conservation management technologies
October 2013
Water resources of country constitute one of its vital assets. Water sustains aquatic biodiversity, economic development and ecological integrity of environment. Water is a powerful indicator of ecological sustainability and economic prosperity. The country receives average annual rainfall of 4000 billion cubic meters (BCM). The rainfall of India show highest spatial and temporal variation of about 100 mm...
Regional approach for the estimation of extreme daily precipitation on North-east area of Algeria
October 2013
Information on precipitation values ​​and their frequencies is needed in various projects related to water.In this study, the regional frequency analysis based on L-moments was used to estimate the annual maximum daily precipitation quantiles at any site in an area located in the north east of Algeria. The investigated...
Spatial and temporal variations of river water quality: A case study of River Kabini at Nanjangud in Karnataka
October 2013
Water pollution is alarming all over the globe and necessitates better understanding of spatial and temporal variations of pollutants in the rivers. In this study, the data sets of 8 water quality monitoring stations in River Kabini at Nanjangud which comprised of 10 water quality parameters monitored monthly over 12 years (2000-2011) are used. Temporal variation of the physico-chemical parameters in each station is...
Geochemical investigation of geothermal power potential exploration of hot springs in South-western Tanzania
October 2013
Geochemical investigation of the power potential of Songwe geothermal prospect in south-western Tanzania within the East African Rift Valley was carried out. The thermal geochemistry was studied by collecting and analysing samples from 14 hotsprings. The maximum discharge of thermal water occurs at the northern part of the prospect, at the bottom of a travertine cliff, 35 km above River Songwe level, at a...
Artificial neural network simulation of ground water levels in uplands of a coastal tropical riparian
September 2013
Wetlands play an important role in the ecological balance of the coastal region. Understanding groundwater level behaviour in uplands is important for the management and the development of coastal tropical riparian wetland. Artificial Neural Networks has proved to be robust techniques in modeling and prediction of hydrological processes. This paper presents the application of ANNs to model groundwater levels...
Impact of soil organic matter on the sorption and phase distribution of 20% butanol-blended gasoline in the vadose zone
September 2013
Batch microcosm experiments were conducted to examine the impact of soil organic matter (SOM) on the sorption and phase distribution of 20% butanol-blended gasoline (B20) compounds in the vadose zone. SOM was found to promote the sorption of B20 gasoline compounds in the vadose zone. It also affected the phase distribution of B20 gasoline compounds in the vadose zone by increasing adsorption on the soil solid...
Advancing stormwater management practice in Iran using water sensitive urban design approach
September 2013
More than 350 cities of Iran are subject to floods every year and flood phenomena cause annual 1,500,000,000,000 Rials loss to Iran. The reason for floods lie with lack of appropriate water management systems in terms of stormwater management. Current status of Iran water management calls for imitating the successful experience of other countries. The aim of this paper is to review better management...
Using electronic signals and neural networks to monitor the performance of an anaerobic bioreactor
September 2013
More than 350 cities of Iran are subject to floods every year and flood phenomena cause annual 1,500,000,000,000 Rials loss to Iran. The reason for floods lie with lack of appropriate water management systems in terms of stormwater management. Current status of Iran water management calls for imitating the successful experience of other countries. The aim of this paper is to review better management...
Numerical simulation of groundwater of large-scale irrigation in Northern China: Case of Baoyang Irrigation Area, Shaanxi, China
September 2013
The numerical simulation of groundwater for the single aquifer layer system of Baoyang irrigation area was performed. Visual MODFLOW was carried out to estimate the sustainability of the groundwater resource and to delineate suitable plan for future groundwater use. The conceptual model was built by analyzing the hydrogeological data, aquifer properties, pumping wells, head observations; etc. A groundwater...
Spatial strategies for flood vulnerability analysis and long term scenario with geographic information system (GIS) in Sirajganj, Bangladesh
September 2013
Flood is a natural hazard resulting from extreme meteorological events which cause an unexpected threat to human lives and properties. Flood stems from the probability that a major hazard event will occur in a well-defined area and it will impacts negatively, in particular on the people and their welfare. Flood protection planning is a very important step which helps not only to rescue the people affected by...
Study of geosynthetic clay liner layers effect on decreasing soil pollution in the bed of sanitary land fills
August 2013
According to importance of preventing pollution of soil by leachate in the landfills, the bed of landfills has to be designed in the way that it can prevent soil pollution. This research has studied the effect of geosynthetic clay liner (GCL) layer to decrease soil pollution in the bed of landfills. Two different kind of soil were transferred to laboratory for doing experiments. In the first step, the...
Pump functional response at air- entraining vortex occurrence
August 2013
Varied decay response function (α), was used to evaluate the effect of water depth and time on pump functional response to vortex occurrences. High water depths at any time interval increased vortex occurrences. Decay response function of pumps peaked at water depth of 0.32 m. Relationship between response function and time duration of air-entraining vortex occurrence was established. Relationship...
Hydrogeophysical and hydrochemical analysis of shallow water wells around Ire-Akari area, Akure southwestern Nigeria
August 2013
The hydrogeophysical and hydrochemical analysis of the shallow wells around Ire-Akari area Orita-Obele Akure, Ondo state was carried out to understand the geologic layer constituting the aquifer, its suitability or otherwise as source of potable / drinking water and the tendency of the overburden to naturally protect the aquifer. The result of the hydrochemical analysis showed that most of the physio-chemical...
Investigation of soil and water salinity, its effect on crop production and adaptation strategy
August 2013
Bangladesh is a deltaic country with total area of 147,570 km2. The major part (80%) of the country consists of alluvial sediments deposited by the river Ganges, Brahmaputra, Tista, Jamuna, Meghna and their tributaries. The coastal region covers almost 29,000 sq. km or about 20% of the country. Moreover, the coastal areas of Bangladesh cover more than 30% of the cultivable lands of the country. About...
Comparison of spectrophotometric methods using cuvette tests and national standard methods for analysis of wastewater samples
August 2013
The suitability of spectrophotometric methods using cuvette tests (CT) for determination of ammonia (NH4+-N), nitrates (NO3--N), total phosphates (РО43--Р) and chemical oxygen demand (COD) in real wastewater were evaluated by comparison with corresponding Bulgarian national standard methods (BS). The CT methods are based on measuring of ready-to-use cuvettes (bar-coded reagent...
Geospatial study on morphometric characterization of Umtrew River basin of Meghalaya, India
August 2013
Geospatial technology that is, remote sensing (RS), geographical information system (GIS) and global positioning system (GPS) have proved to be an efficient tool in the field of modern day geographical and geological studies. GIS and Remote sensing techniques have been adopted for the identification of different morphological features and to analyze their existence in a hilly river basin of Meghalaya plateau,...
Application of AquaCrop model in deficit irrigation management of cabbages in Keiyo Highlands
July 2013
Crop growth can be simulated under different water application using simulation models. The main purpose of deficit irrigation is high water productivity with less application of water to plants. In this research, the potential of AquaCrop to simulate the growth of cabbages in Keiyo Highlands (0°22’45’’N and 35°32’9”, 2586 m.a.s.l) under nine different irrigation treatments in the...
Study of double breakpoints during chlorination of River Yamuna water, Delhi, India
July 2013
A study on chlorination of raw Yamuna River water is reported in this study. Samples were chlorinated with increasing doses of standard chlorine water and residual chlorine (Cl2) was measured by Starch-Iodide method. For each sample, the chlorination curve (chlorine residual versus chlorine dose) was obtained. Curves showed the typical irregularity attributed to the formation and destruction of chloramines...
Study of major and trace elements in groundwater of Birsinghpur Area, Satna District Madhya Pradesh, India
July 2013
The present paper deals with major and trace elements geochemistry from the groundwater of Birsinghpur area, Satna district, Madhya Pradesh, India. Geologically, the area comprises sandstone and shale formations of the Proterozoic Upper Vindhyan Supergroup. The study reveals that the water is hard to very hard (The classification as hard to very hard is possibly based on incorrect analytical data); the...
Geoelectric study of major landfills in the Lagos Metropolitan Area, Southwestern Nigeria
July 2013
Geoelectric study of Abule Egba, Igando and Olushosun landfills within Lagos municipality has been undertaken to determine their hydrogeologic implications. The field technique involved vertical electrical soundings utilizing Schlumberger electrode array. At Abule Egba, landfill materials are defined by resistivity varying between 1.6 Ω-m at decomposed stage and 144 Ω-m within fresh dump. The...
Performance assessment of some developed surface irrigation methods
July 2013
Irrigation development is a gateway to increased agricultural, water and land productivity, increased household and national food security. However, irrigation development has been a major challenge in many developing countries, including Egypt. The overall objective of this study is to detect the influence of different irrigation systems on water-use efficiency, crop and soil salinity in highly soil...
Performance analysis of the storm water management and road tunnel – SMART in Kuala Lumpur
July 2013
Storm water management and road tunnel (SMART) was built to direct water around a major meeting point of two major rivers located in a large urban area; in addition, it doubles up as a road tunnel, though that section is only used in major storms. Much information has come from the Malaysian Department of Irrigation and Drainage (DID), in the form of data and reports. Pre-project historical water flow data as...
Assessment of groundwater quality for irrigation of Bhaskar Rao Kunta watershed, Nalgonda District, India
July 2013
Semi-arid region of Bhaskar Rao Kunta watershed groundwater quality was evaluated for suitability irrigation; in this situation twenty groundwater samples were collected at identical locations from deeper bore wells. The American Public Health Association (APHA) standard methods were followed and the concentrations of physicochemical parameters of pH, electrical conductivity (EC), total hardness...
Investigating rainwater harvesting on highly permeable soils - baseline conditions
July 2013
Dune sand was subjected to varying rainfall intensities in order to generate runoff under laboratory conditions on slopes of 20 and 30°. Soil moisture probes were inserted into the soil at varying depths to investigate the movement of water through the profile. Results indicate that in spite of continuous simulated rainfall administered for over 4,000 min, no runoff could be generated over the sand...
Study of heavy metals pollution and physico-chemical assessment of water quality of River Owo, Agbara, Nigeria
July 2013
The various selected physicochemical and biological condition of freshwater bodies which receive varying number of outfalls of industrial and domestic effluents containing heavy metals of River Owo, Agbara Industrial Estate, a boundary town between Lagos and Ogun state, along Badagry Expressway in Nigeria, was assessed for five consecutive months. Four sampling points were chosen from the water body to...
Geophysical and hydrochemistry methods for mapping groundwater contamination around Aule area, Akure, Southwestern Nigeria
July 2013
An integrated geophysical investigation involving 2D-Wenner profiling, very low frequency electromagnetic, vertical electrical sounding (VES) and water quality analysis was conducted around Aule area within Akure the capital city of Ondo state southwestern Nigeria where there have been reported cases of groundwater contamination. Also hydrochemical analysis was carried out on five water samples in the area;...
Phosphate transport variation in sand column
June 2013
Groundwater pollution by human activities has been reported severally. Movement of leachate is identified as a major process of the phenomenon. Analytical work to replicate the process has been partially successful in soils. The objective therefore was to investigate the one dimensional (1-D) transport of phosphate at the side and centre of a sand column, verify and calibrate the model derived. Phosphate of known...
Validation of the rainfall-runoff SCS-CN model in a catchment with limited measured data in Zimbabwe
June 2013
An evaluation of available opportunities to revive irrigation on a long abandoned irrigation scheme in a dry region of Zimbabwe is presented by assessing water availability at catchment level. The aim is to enhance the livelihoods, income and nutrition of the communities that depend on the irrigation scheme through a sustainable management of revitalised irrigation infrastructure and ensure food...
Hydrological assessment and suspended sediment loading of the Chini Lake catchment, Pahang, Malaysia
June 2013
Hydrological evaluation and sediment loading of the Chini Lake catchment was investigated. Sediment loads and water discharge from seven selected feeder rivers were measured over a period of one year (January to December 2006). Suspended sediment concentration was measured by the standard method. The annual rainfall from 1984 to 2006 at the Chini Lake catchment ranged from 1487.70 mm (1997) to...
Page 4 of 7, showing 50 records out of 347 total, starting on record 151, ending on 200
