Impact of Debris-Flow Deposits on Hydrogeochemical Processes and the Developement of Dryland Salinity in the Yass River Catchment, New South Wales, Australia

Jankowski, Jerzy; Acworth, R. I.

doi:10.1007/s100400050119

Cited by 240 publications

(80 citation statements)

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“…More than one quarter (20) of the 73 constituents analyzed for were not detected above the laboratory reporting levels (LRLs) in any sample. Result summary of the remaining 53 constituents and physical properties which include range, mean, standard deviation were presented in Table 1 for physical and major elements and Table 2 for trace elements.…”

Section: Resultsmentioning

confidence: 89%

Groundwater Quality and Identification of Hydrogeochemical Processes within University of Lagos, Nigeria

Odukoya¹,

Folorunso²,

Ayolabi³

et al. 2013

JWARP

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Water samples from twenty one boreholes were collected within University of Lagos and analyzed for physical properties, trace elements and cations using inductively coupled plasma optical emission spectrometry (ICP-OES). Physical analysis of the samples shows slight acidity and alkalinity with 78% of the samples exceeded recommended standards. They can be classified as fresh water based on TDS and EC. Chloride concentrations fall within water standards in most samples while Al, Na, Pb and Br exceeded recommended standards in most samples. Gibbs plot, relationship between total cations, Na + K, Ca + Mg and Cl showed that all the groundwater samples fall in the water-rock interaction field which suggests that the weathering of rocks and influence of sea water primarily controls the major chemistry of groundwater in the area. Sodium Absorption Ratio (SAR) for all the water samples was less than 10 and excellent for irrigation purpose. Only 33% of water samples were suitable for irrigation based on Soluble Sodium Percentage (SSP) and Magnesium Adsorption Ratio (MAR), whereas based on Kellys Ratios (KR) all the water samples were not good for irrigation purpose having KR greater than 1. Fifty percent of the water samples showed pollution index (PI) above 1 with highest contribution (37.8%) from lead (Pb). Mn, Al, Ni, Fe and As contributed 29.3%, 19.13%, 8.66%, 4.25% and 0.82% respectively.

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Section: Resultsmentioning

confidence: 89%

Groundwater Quality and Identification of Hydrogeochemical Processes within University of Lagos, Nigeria

Odukoya¹,

Folorunso²,

Ayolabi³

et al. 2013

JWARP

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“…Figure 3 indicates that most of the groundwater samples fall under evaporation dominance zone and few samples are placed under rock dominance zone. Evaporation process is not only a common phenomenon in surface water but also in groundwater system (Jankowski and Acworth 1997). The result reveals that evaporation is the dominant process due to dry and arid condition prevailing throughout the region.…”

Section: Mechanism Controlling the Groundwater Chemistrymentioning

confidence: 97%

Groundwater quality and its suitability for drinking and irrigational use in the Southern Tiruchirappalli district, Tamil Nadu, India

Ramkumar²,

et al. 2014

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A total of 20 groundwater samples were collected from both dug and bore wells of southern Tiruchirappalli district and analyzed for various hydrogeochemical parameters. The analyzed physicochemical parameters such as pH, electrical conductivity, total dissolved solids, calcium, magnesium, sodium, potassium, bicarbonate, carbonate, sulfate, chloride, nitrate, and fluoride are used to characterize the groundwater quality and its suitability for drinking and irrigational uses. The results of the chemical analysis indicates that the groundwater in the study area is slightly alkaline and mainly contains Na ? , Ca 2? , and Mg 2? cations as well as HCO 3 2-, Cl -, SO 4 2-and NO 3 -anions. The total dissolved solids mainly depend on the concentration of major ions such as Ca, Mg, Na, K, HCO 3 , Cl, and SO 4 . Based on TDS, 55 % of the samples are suitable for drinking and rest of the samples are unsuitable for drinking. The total hardness indicates that majority of the groundwater samples are found within the permissible limit of WHO. The dominant hydrochemical facies for groundwater are Ca-Mg-Cl, Ca-HCO 3 , and Ca-Cl type. The USSL graphical geochemical representation of groundwater quality suggests that majority of the water samples belongs to high medium salinity with low alkali hazards. The Gibb's plot indicates that the groundwater chemistry of the study area is mainly controlled by evaporation and rock-water interaction. Spearman's correlation and factor analysis were used to distinguish the statistical relation between different ions and contamination source in the study area.

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“…in this aquifer. If the evaporation process is dominant, assuming that no mineral species are precipitated, the Cl/Na ratio would be unchanged (Jankowski and Acworth 1997). However, the majority of the samples have Cl/Na and Cl/Ca ratios much higher than would indicate the possibility of some other chemical processes, such as ion exchange influence the chemical makeup of groundwater.…”

Section: Source Of Salinity In Groundwatermentioning

confidence: 99%

Water quality and geochemistry evaluation of groundwater upstream and downstream of the Khirbet Al-Samra wastewater treatment plant/Jordan

2015

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Groundwater in the northeastern Amman-Zarqa basin is an important source of water for irrigation. The quality and quantity of water has deteriorated due to mismanagement and misunderstanding of the hydrogeological system. Overexploitation of groundwater resources upstream of the Khirbet Al-Samra wastewater treatment plant (KSWTP) has lowered the water table 43 m since the beginning of groundwater development in 1968. Heavy pumping of groundwater downstream of KSWTP has not dropped the water level due to constant recharge from the Zarqa river bed. The water level of groundwater is rising continuously at a rate of 20 cm per year since building the KSWTP in 1985. Groundwater salinity has also shifted the quality of the aquifer from fresh to brackish. Continual irrigation from the groundwater upstream of KSWTP dissolves accumulated salt from the soil formed by evaporation, and the contaminated water infiltrates back to the aquifer, thereby increasing both salt and nitrate concentrations. The intense irrigation from the reclaimed water downstream of KSWTP and leakage of treated wastewater from the Zarqa River to the shallow groundwater is a secondary source of salt and nitrates. The isotopic composition of groundwater varies over a wide range and is associated with the meteoric water line affected by Mediterranean Sea air moisture. The isotopic composition of groundwater is represented by evaporation line (EL) with a low slope of 3.6. The enrichment of groundwater in d18 O and dD is attributed mainly to the two processes of evaporation before infiltration of return flow and mixing of different types of water in KSWTP originating from different aquifers. The EL starts from a location more depleted than the weighted mean value of the Amman rainfall station on the Eastern Meteoric Water Line indicating that the recharge took place under the climate regime prevailing today in Jordan and the recharge of the groundwater originates from a greater elevation than that of the Amman station. Elevated high tritium levels observed in wells in close proximity to a regional fault system signify local recharge and short residence time. The Khaldyia dam is a local source for groundwater recharge.

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Impact of Debris-Flow Deposits on Hydrogeochemical Processes and the Developement of Dryland Salinity in the Yass River Catchment, New South Wales, Australia

Cited by 240 publications

References 0 publications

Groundwater Quality and Identification of Hydrogeochemical Processes within University of Lagos, Nigeria

Groundwater Quality and Identification of Hydrogeochemical Processes within University of Lagos, Nigeria

Groundwater quality and its suitability for drinking and irrigational use in the Southern Tiruchirappalli district, Tamil Nadu, India

Water quality and geochemistry evaluation of groundwater upstream and downstream of the Khirbet Al-Samra wastewater treatment plant/Jordan

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