Potential groundwater recharge in north-western India vs spaceborne GRACE gravity anomaly based monsoonal groundwater storage change for evaluation of groundwater potential and sustainability

Abstract This work aims to identify the potential groundwater recharge zones in the Mitidja plain (north Algeria) using the multi-criteria approach. The analysis was based on the use of a geographical information system (GIS) and remote sensing to establish eight thematic maps, weighted, categorized and inserted, that allowed us to establish the potential zones’ map for groundwater recharge. Three potential groundwater recharge classes were defined corresponding, respectively, to low (26%), moderate (47%) and high (27%). The best groundwater potential zones are situated in the piedmont of the Blidean Atlas (the south of the study area), precisely, upstream near to wadis (wadi El Harrach, wadi Djemaa, wadi Mazafran) and the western aquifer limit, where the hydrogeological units are formed by the alluvium formation which is characterized by high hydraulic conductivity, high water flow, low slope, low drainage, low quantity transported sediments and good water quality. The obtained results, in this work, describe the groundwater recharge potential areas and supply information for a suitable mapping and the management of aquifer resources in the study area.

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Determination of an Annual Groundwater Recharge and Demand in Oke-Ero LGA, Kwara State, Nigeria

FUOYE Journal of Engineering and Technology ◽

10.46792/fuoyejet.v5i1.471 ◽

2020 ◽

Vol 5 (1) ◽

Author(s):

Akeem A Agboola ◽

Babatunde K Adeogun ◽

Morufu A Ajibike

Keyword(s):

Groundwater Recharge ◽

Water Consumption ◽

Water Demand ◽

Consumption Rate ◽

Groundwater Potential ◽

Water Demands ◽

The People ◽

Potential Groundwater ◽

Daily Water

Efficient groundwater management, water consumption rate and quantitative determination of the amount of rainfall that recharges groundwater naturally is essential for a place like Oke-Ero LGA where the people in Oke-Ero depend mainly on groundwater as the only source of water supply. In this work, an attempt has been made to evaluate the amount of rainfall that recharges aquifers using Krishna model with a view to knowing the groundwater potential of the area and determine the water consumption rate. This study established that Oke-Ero LGA has 65.7 million cubic meters (MCM) groundwater potential annually, from the survey output the average daily water demand in Oke-Ero is 75 l/c/d. The total water demands across the LGA based on 2016 population estimate is 2.11 MCM/year with anticipated increase of 4.34 MCM/year by 2040 and expected water demand increase rate of 3.2% annually. This work has ascertained that the available water is sufficient to take care of the water demand of the people in Oke-Ero LGA and it also shows that there is more water for other activities such as industrial purposes. Keywords - Groundwater potential, Groundwater recharge, Oke-Ero LGA, Water demand.

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Mapping of Potential Groundwater Recharge Zones: A Case Study of Maputaland Coastal Plain, South Africa

10.21203/rs.3.rs-566699/v1 ◽

2021 ◽

Author(s):

Denisha Ponnusamy ◽

N Rajmohan ◽

Peiyue Li ◽

M Thirumurugan ◽

Chidambaram Sabarathinam ◽

...

Keyword(s):

Groundwater Recharge ◽

Coastal Plain ◽

Groundwater Potential ◽

Boolean Logic ◽

Combination Method ◽

Groundwater Potential Zone ◽

Potential Zone ◽

Groundwater Potential Zones ◽

Thematic Layers ◽

Potential Groundwater

Abstract The potential groundwater zones of the Maputaland coastal plain of Kwazulu-Natal is identified by comparing the Analytic hierarchy process (AHP)-Multi criteria decision-making (MCDM)techniqueand Boolean logical approach. The map of groundwater potential zones was prepared by generation and integration of 8 thematic layers, i.e. geology, geomorphology, lineament density, soils, slope, rainfall and land use. Each thematic layer wereassigned with subjective relative weights under AHP-MCDM technique and Boolean logic and were overlaid in aGIS platform to identify the groundwater potential zones. The groundwater potential zones were delineated under two different GIS techniques to obtain confident results. Weights of thematic layers were allocated using AHP normalized eigen vector methodology and weighted linear combination method was employed to find the groundwater potential index.Whereas in a Boolean approach, AND operator was appliedin order to integrate thematic layers to delineate the groundwater potential zones. The delineated groundwater potential maps using AHP-MCDM technique indicates that 6.0% (310.5 km2) from total area falls under very good; 67% (3467 km2) good; 25% (1294 km2) poor and 2% (103.5 km2) under very poor, whereas in Boolean logic about 70 % of the area (i.e. 3623 km2) constitutes good and 30 % (1552 km2) of the areasconstitutes poor groundwater potential zone. Further, the obtained results indicate thatthe geology, geomorphology, landuse and slope playeda vital role in groundwater recharge. Thispioneer study in maputaland coastal plainexplores the baseline data of the potential groundwater zones. The resultsemanating from this study can be used in further understanding of the available groundwater resources and can be helpful in future to find the suitable groundwater exploration sites in the area.

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Potensi Air Tanah Di Daerah Terdampak Erupsi Gunung Agung, Bali

Jurnal Teknik Hidraulik ◽

10.32679/jth.v10i2.602 ◽

2019 ◽

Vol 10 (2) ◽

Author(s):

Yan Adithya Wesda Wardhana ◽

Isnan Fauzan ◽

Heni Rengganis

Keyword(s):

Groundwater Recharge ◽

Local Governments ◽

Groundwater Potential ◽

Water Sources ◽

Raw Water ◽

Recharge Potential ◽

Hydrogeological Conditions ◽

Potential Groundwater ◽

The Government ◽

The Impact

Gunung Agung is a stratovolcano type of volcano which has a height of 3,142 masl and is located in Karangasem Regency, Bali Province. At the end of 2017, Mount Agung's volcanic activity increased until it finally erupted several times in October to December. The government has prepared refuge pockets at the foot of Mount Agung, in areas that are not directly affected by eruption. There are 19 drilling plan points that will be carried out to meet the raw water needs at the evacuation site. This paper presents the groundwater recharge potential including the distribution of water sources, Hydrogeological conditions and the magnitude of groundwater recharge potential at hillside of Mount Agung and the surrounding area. The method used in this study is a field survey, calculation of potential recharge, analysis and evaluation of hydrogeological conditions, distribution of water sources and calculation of potential groundwater recharge. Groundwater at the foot of Mount Agung has the potential to be utilized and developed mainly to cover raw water needs in several refugee locations, namely in the Districts of Sidemen, Abang and Karangasem. The result of the analysis is that the largest groundwater potential is in Kubu Sub-District, namely 97,560,207 m3 / year, with a position that is relatively susceptible to primary hazards and secondary to Mount Agung eruption. For locations that are relatively safe and reachable in the area, they are in Tianyar, Sukadana, Baturinggit, Kubu, and Tulamben Villages, all of which are on the coast of the sea. These results are expected to be used by local governments in an effort to deal with the provision of water from the impact of the eruption of Mount Agung.

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Identifikasi Potensi Air Tanah untuk Kebutuhan Penyediaan Air Bersih dengan Metode Geolistrik: Studi Kasus di Kawasan Geostech, Puspiptek Serpong

Jurnal Teknologi Lingkungan ◽

10.29122/jtl.v21i2.3577 ◽

2020 ◽

Vol 21 (2) ◽

pp. 204-212

Author(s):

Heru Sri Naryanto ◽

Puspa Khaerani ◽

Syakira Trisnafiah ◽

Achmad Fakhrus Shomim ◽

Wisyanto Wisyanto ◽

...

Keyword(s):

Geophysical Methods ◽

Groundwater Potential ◽

Clean Water ◽

Rock Types ◽

Groundwater Aquifers ◽

Groundwater Aquifer ◽

Groundwater Origin ◽

Laboratory Facility ◽

Potential Groundwater ◽

Lower Depth

ABSTRACTGeostech Building, as an office and laboratory facility, requires a source of clean water from groundwater related to the limited supply of clean water from the PDAM. Due to the needs of freshwater from groundwater origin, data and information are needed regarding the potential groundwater in the area, including aquifer configuration, depth, and groundwater potential. The presence of groundwater is not distributed through every area, and it's related to the geological and geohydrological conditions. One of the geophysical methods that can describe subsurface is 2D geoelectric methods. This method can distinguish and analyze rock types, geological structures, groundwater aquifers, and other important information based on the characteristics of the electricity of rocks by looking at the value of the type of resistance. In this measurement, the Wenner Alpha configuration has been used, where the arrangement of A-B current electrodes and M-N potential electrodes have constant spacing. From the measurement results, it can be interpreted that there is a low resistivity layer containing porous groundwater as an aquifer. Based on regional geological data, it has been estimated that this layer is in the form of sandy tuff (0-1.5 ohm-m). The exploitation of groundwater with drilling is expected to reach the aquifer's upper layer at depth, starting from 11.5-13 meters. The groundwater aquifer thickness cannot be ascertained because of the penetration of the lower depth of 2D geoelectric measurements truncated by the constraint of a maximum stretch of cable. The upper layer of the aquifer contains a turned layer of fine tufa and medium tuff, which is impermeable, coarse tuff, and mixed soil with varying thickness at the upper layer.Keywords: 2D geoelectric, aquifer, potential groundwater, Geostech ABSTRAKGedung Geostech sebagai sarana perkantoran dan laboratorium memerlukan sumber air bersih dari air tanah terkait dengan terbatasnya suplai air bersih dari PDAM. Kebutuhan air bersih berasal dari air tanah, maka diperlukan data dan informasi mengenai kondisi potensi air tanah di kawasan tersebut termasuk konfigurasi akuifer, kedalaman, dan potensi air tanahnya. Keberadaan air tanah tidaklah merata untuk setiap tempat dan sangat terkait dengan kondisi geologi dan geohidrologinya. Salah satu metode geofisika yang dapat memberikan gambaran kondisi bawah permukaan adalah dengan metode geolistrik 2D. Metode ini dapat membedakan dan menganalisis jenis batuan, struktur geologi, akuifer air tanah, dan informasi penting lainnya berdasarkan sifat kelistrikan batuan dengan melihat nilai tahanan jenisnya. Dalam pengukuran ini digunakan konfigurasi Wenner Alpha, dimana susunan elektroda arus A dan B dan elektroda potensial M dan N mempunyai spasi yang konstan. Dari hasil pengukuran dapat diinterpretasikan adanya lapisan dengan resistivitas rendah yang mengandung air tanah dan bersifat porous sebagai akuifer. Berdasarkan data geologi regional diperkirakan lapisan ini berupa tuf pasiran (0-1,5 ohm-m). Pengambilan air tanah dengan pemboran diperkirakan akan mengenai batas atas lapisan akuifer pada kedalaman 11,5-13 meter. Ketebalan akuifer air tanah tidak bisa dihitung karena penetrasi kedalaman pengukuran geolistrik 2D terbatasi oleh bentangan elektroda di permukaan. Lapisan di atas akuifer merupakan lapisan selang-seling tuf halus dan tuf sedang yang kedap air, tuf kasar, dan pada bagian paling atas merupakan tanah urugan dengan ketebalan bervariasi.Kata kunci: Geolistrik 2D, akuifer, potensi air tanah, Geostech

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Gastrointestinal Protective Effect of Zizyphus xylopyrus (Retz) Willd Leaf Extract Against Indomethacin and HCl-EtOH Induced Ulcers

Current Traditional Medicine ◽

10.2174/2215083804666181012124047 ◽

2019 ◽

Vol 5 (2) ◽

pp. 140-146

Author(s):

Shweta Jain ◽

Sourabh Jain ◽

Nagendra S. Chauhan ◽

Ankur Vaidya

Keyword(s):

Protective Effect ◽

Ethanolic Extract ◽

Negative Control ◽

Gastric Epithelium ◽

Gastric Ulcers ◽

Western India ◽

Skin Infections ◽

Ulcer Index ◽

Digestive Disorders ◽

North Western

Background: Zizyphus xylopyrus (Retz.) Willd. (Rhamnaceae) is a straggling shrub or a small tree, armed with spines, found throughout north western India, Pakistan and China. Methods: The aerial and root barks, leaves and fruits of Zizyphus species are used in medicine for the treatment of various diseases such as weakness, liver complaints, obesity, diabetes, skin infections, fever, diarrhea, insomnia and digestive disorders. Ethanolic extract of leaves of Zizyphus xylopyrus (Retz) Willd was prepared by solvent extraction and subjected to study the protective effect against Indomethacin and HCl-EtOH induced ulcer using Ranitidine (100 mg/kg) and Omeprazole (8 mg/kg) as standard respectively. Results: Histopathological lesions with marked disorientation of the gastric epithelium was observed in negative control, while extract treated rats showed a better protected mucosa with intact epithelium in comparison to standard treated rats. Ulcer index and percentage ulcer protection also represent protecting effects of the extract. Conclusion: Ethanolic extract of Z. xylopyrus (Retz) Willd leaves extract was found to be significantly protective against gastric ulcers.

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