scholarly journals GROUNDWATER QUALITY MODELING FOR SUITABILITY FOR IRRIGATION PURPOSES IN OIL PRODUCING AREAS OF KHANA AND GOKANA LOCAL GOVERNMENT AREAS OF RIVERS STATE, NIGERIA

2020 ◽  
Vol 4 (2) ◽  
pp. 47-52
Author(s):  
Nwankwoala, H.O ◽  
Amachree, T

This study is aimed at modeling groundwater quality for irrigation purposes in oil producing areas of Khana and Gokana Local Government areas of Rivers State, Nigeria. A random sampling approach was adopted in groundwater sampling in Khana and Gokana local government areas of Rivers State. Groundwater samples were collected from a total of twenty-two (22) boreholes in the area. Ten (10) residential boreholes were sampled in Khana while 12 boreholes were sampled in Gokana local government area. Various indices were used to determine the quality of groundwater for irrigation in the study area such as Electrical Conductivity (EC), Sodium Adsorption Ratio (SAR), Permeability Index (PI), Percent Sodium (%Na), Magnesium Adsorption Ratio (MAR), Kelly’s Ratio (KR) and Potential Soil Salinity (PS). In Khana area, all the water samples have PI values which render the groundwater unsuitable for irrigational purposes. Meanwhile, in Gokana, the groundwater samples show good to excellent quality for irrigation purposes. A high permeability index enhances crops yield, because the soils becomes more aerated and allows flow to occur easily, carrying plant nutrients from one part of the soil to the other. All groundwater samples in the area plotted in the C1-S1 (low sodium hazard and low salinity), C2-S1 (low sodium hazard and moderate salinity) and C3-S1 (low sodium hazard and high salinity) category which represents low sodium hazard and low salinity hazards and are therefore suitable for irrigation.

Author(s):  
A. Zahir Hussain ◽  
K.M. Mohamed Sheriff

Tiruppur is a textile city located on the banks of Noyyal River a tributary of the River Cauvery. Twenty groundwater samples were collected in identical locations from bore wells. The concentrations of physicochemical parameters of pH, Electrical Conductivity (EC), Total Hardness (TH), Ca, Mg, Na, K, HCO3, SO4, Cl and NO3 were analyzed. The results of the concentrations were interpreted and measured with different irrigation indexes like Percent Sodium (%Na), Sodium Adsorption Ratio (SAR), Residual Sodium Carbonate (RSC), Permeability Index (PI), Kelly’s Ratio (KR), CAI-1 and CAI-2 were analyzed.


2020 ◽  
Vol 2020 ◽  
pp. 1-15 ◽  
Author(s):  
Kshitindra Kr. Singh ◽  
Geeta Tewari ◽  
Suresh Kumar

In the present study, the groundwater quality for suitability in agriculture from Udham Singh Nagar district, Uttarakhand, has been evaluated. A total of 50 groundwater samples have been collected and analysed for pH, EC, TH, HCO3−, CO32−, Cl−, SO42−, NO3–, Ca2+, Mg2+, Na+ and K+. To assess the groundwater quality for irrigation purpose, parameters like sodium adsorption ratio (SAR), soluble sodium percentage (SSP), residual sodium carbonate (RSC), magnesium hazards (MHs), permeability index (PI), and chloroalkaline index (CAI) values have been calculated. In USSL diagram, most of the groundwater samples fall in the C2S1 category and were safe for irrigation purpose. Only seven groundwater samples fall in the C3S1 category, indicating medium to high salinity which is safe for irrigation purpose for all types of soils but with limited care of exchangeable sodium. On the basis of RSC, all groundwater samples were observed to be suitable for irrigation purpose. Piper diagram indicated that 50% of the groundwater samples belonged to the Mg2+-Ca2+-HCO3− type and 48% was classified as the Ca2+-Mg2+-Cl− type. Durov diagram suggested possibilities of ion mixing and simple dissolution of ions from polluted soil.


2019 ◽  
Vol 25 (2) ◽  
pp. 135-144
Author(s):  
E.A. Udom ◽  
A.E. Ekpo ◽  
S.I. Oluka

Irrigated agriculture is dependent on an adequate water supply of usable quality. Since water quality is very important for any intended use, the Abak River water which is used for irrigation by the Cross River Basin Development Authority and the rural communities around the river bank was assessed for irrigation purposes. The River water samples were assessed for four months (from November, 2016 to February, 2017 for its irrigation water qualities. The water samples were analyzed for major cations: Na+, Ca2+,K+,Mg2+ and anions: Cl-, SO42-, HCO3-, CO32- and NO3.The important constituents that influence the water quality for irrigation such as Electrical Conductivity (EC), Total Dissolved Solid (TDS), Sodium Adsorption Ratio (SAR), Magnesium Adsorption Ratio (MAR), Permeability Index (PI), Kelly’s Ratio (KR), Residual Sodium Bicarbonate (RSBC), Soluble Sodium Percentage (SSP), (RSC) Residual Sodium Carbonate and Potential Salinity (PS) were assessed and compared with standard limits. The values of Sodium Adsorption Ratio (0.4 to 0.64), Soluble Sodium Percentage (28.16 to 34.68%), Residual Sodium Bicarbonate (2.82 to 3.15 meq/L), Permeability Index (3.20 to 3.98%), Magnesium Adsorption Ratio (77.78 to 87.59%), Kelly’s Ratio (0.13 to 0.161 meq/L), Electrical Conductivity (20.5 to 22.5 μs/cm), Total Dissolved Solids (10.20 to 12.60 Mg/l) Residual Sodium Carbonate (0.298 to 0.8 meq/L) and Potential Salinity (1.09 – 1.358 meq/L) were found to be within the safe limits and thus suitable for irrigation purposes, except MAR which is above 50% the safe limit. The river water will thus cause neither salinity hazard nor has an adverse effect on the soil properties of the study area or on crops.Keywords: Abak River, Water Quality Irrigation, Parameters, Assessment


2018 ◽  
Vol 7 (3.34) ◽  
pp. 72
Author(s):  
D Sivakumar ◽  
S Govindasami ◽  
B Raghul Raj ◽  
C Gowdham ◽  
V M. Ragothaman

The study focused to assess the groundwater in Madhavaram, Chennai, Tamil Nadu, for irrigational purposes. Irrigation indices like SAR, SSP, PI and KR was determined in each groundwater sample to identify its irrigational suitability. This study further envisaged that these groundwater aquifers have low Sodium adsorption ratio and hence groundwater is fit for irrigation, while residual sodium bicarbonate and Kelly’s ratio values indicated that majority of these aquifer have water of marginal to harmful quality against irrigation. The dominance pattern of cations in the studied ground water was in the order of Na > Ca > Mg > K and the sequence of anionic dominance was as follows: Cl > HCO3 > SO4. All 20 wells fall under the excellent category of SAR. SSP values of groundwater range from 49 to 71 and indicated that 15 wells are under permissible and 5 wells are under doubtful classification.  PI value indicated that groundwater is unsuitable against irrigation.  The KR indicated that groundwater quality in 18 wells is not fit for irrigation.  Hence, necessary pre-treatment methodology is to be adopted for utilizing groundwater for irrigation purpose. 


2020 ◽  
Vol 21 (2) ◽  
pp. 349-357
Author(s):  
Abdul-Aziz Y. T. Al-Saffawi

The study aimed to understand the quality of groundwater in Al-Nimrud region south-eastern part of Mosul city, Iraq. Groundwater samples from 10 wells were collected during the dry season and analyzed for their physical and chemical properties using standard laboratory methods. From the analyzed data, some parameters like sodium adsorption ratio (SAR), sodium percentage (Na%), potenial salinity (PS), residual sodium carbonate (RSC), magnesium adsorption ratio (MAR), permeability index (PI) and Kellys ratio (KR) were calculated for each water sample to know the irrigational fitness and irrigation water quality index (WQI) was applied to the analytical results of the parameters to obtain a single value that was used to rank the groundwater at each well for agricultural uses. The results showed a high levels of salts for most of the water samples studied, where the average values of EC ranged between (1.64 to 5.069) dS. m -1 . Also, the estimated parameters such as Na%, SAR, PI, KR were within the appropriate levels for irrigation, while the values of MAR, PS for most of the samples were within the inappropriate limits for irrigation. Also, the results of the WQI values showed that the groundwater quality falls between the category of severe to low restrictions, therefore the use of most of the water for irrigation in the study area is likely to lead to the problem of salinity in soils with heavy texture.


2018 ◽  
Vol 13 (1) ◽  
pp. 62-78 ◽  
Author(s):  
Farhad Ehya ◽  
Zohreh Marbouti

Abstract Groundwater is the main agricultural water resource in arid and semi-arid regions, so, preserving it is extremely important. In this study, groundwater quality was assessed for irrigation, using the principal chemical and physical quality parameters from 30 wells in the study area. Groundwater classification on the basis of electrical conductivity reveals that more than 85% of the samples taken fall into the ‘unsuitable’ and ‘doubtful’ classes. On the basis of Richards's classification, 67% of the samples are unsuitable for irrigation. Most, however, appear suitable for irrigation based on their sodium adsorption ratio, %Na, permeability index, magnesium adsorption ratio, Kelly's ratio and residual sodium carbonate water quality indices. The concentration of boron varies between 0 and 2 mg/l, within the FAO's (Food and Agriculture Organization of the United Nations) acceptable standard range. About 60% of the wells are not suitable for drip irrigation because of the water's potential for clogging. There will be no water infiltration problem, if groundwater in the study area is used for irrigation. With respect to the SO42− and Cl− concentrations, 53% and 13% of the samples collected are unsuitable for irrigation, respectively. Less than 10% of the samples have ‘severe’ constraints restricting their use for irrigation with respect to nitrogen. For sprinkler irrigation, however, the groundwater is subject to ‘severe’ restrictions. Geochemical investigations indicate that the water chemistry is affected by processes including evaporation, water-rock interactions and human activities.


2018 ◽  
Vol 18 (1) ◽  
pp. 9-19
Author(s):  
Asare Asante-Annor ◽  
P. N. Bewil ◽  
D. Boateng

The populace of the Lambussie-Karni District are mainly farmers who have resorted to the use of groundwater for irrigation during the dry season because of long drought and inadequate surface water bodies. The temporal variation of the groundwater quality for irrigation in the District was assessed using sixteen boreholes. Richard Plot indicates that groundwater in the study area is within the low salinity to low sodium hazard and medium salinity to low sodium hazard class. Wilcox Plot shows groundwater to be within excellent to good class in the catchment. Irrigation water quality index (IWQI) map was also developed to determine precisely the degree and areal extent of groundwater suitability for irrigation. ArcGIS 10.1 was used to generate thematic maps for sodium adsorption ratio (SAR), residual sodium carbonate (RSC), permeability index (PI), sodium percentage (Na %), HCO3-, pH and electrical conductivity. The results were compared to Food and Agricultural Organisations (FAO) standard guidelines. An IQWI map for the Lambussie- Karni District shows that groundwater is generally suitable for irrigation, about 24.57 % of the district will require crops which can tolerate high amount of salts. A percentage (39.82 %) of the catchment has groundwater, which is highly suitable for crops which are least resistant to salt. Keywords: Groundwater Suitability; Irrigation Water Quality; SAR; IWQI Map; Lambussie-Karni District


2020 ◽  
Vol 10 (2) ◽  
pp. 197-212
Author(s):  
Nadia Aziane ◽  
Achraf Khaddari ◽  
Mohammed IbenTouhami ◽  
Abdelmjid Zouahri ◽  
Hakima Nassali ◽  
...  

The coastal area of the Gharb plain constitutes the only hydric resource for region in terms of domestic consumption and agricultural demand which does not cease to increase. It is a very productive and easily accessible groundwater resource, used extensively for irrigation by own pumping. This study was performed to understand the impact of groundwater quality on the crop yields and its suitability for the irrigation for 63 wells and 7 boreholes. Groundwater quality in Mnasra was studied based on different indices for irrigation. The values of SAR, Na %, MAR, SSP, PI, RSC and TDS show that most of the samples fall under good to suitable category. Piper diagram reveals three facies: sodic, calcic and magnesic chlorinated. The results indicate that the order of cation dominance is Na > Ca > Mg > K, while anion dominance is in the order Cl > HCO3> SO4. Stuyfzand's classification indicates that most of the waters analyzed are fresh with moderate alkalinity. Richard Plot indicates that groundwater in the study area is within the low salinity to low sodium hazard and medium salinity to low sodium hazard class (C2S1 and C3S1). Wilcox Plot shows groundwater to be within excellent to a good class.


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