Your search found 11 records
1 Elsheikh, A. E. M.; Zeinelabdein, K. A. E.; Elobeid, S. A. 2011. Groundwater budget for the upper and middle parts of the River Gash Basin Eastern Sudan. Arabian Journal of Geosciences, 4(3-4):567-574. [doi: https://doi.org/10.1007/s12517-010-0184-4]
Groundwater ; River basins ; Alluvial aquifers ; Water resources ; Meteorological data ; Surface water ; Water levels / Eastern Sudan / Gash River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H044942)
https://vlibrary.iwmi.org/pdf/H044942.pdf
(0.33 MB)
The River Gash Basin is filled by the Quaternary alluvial deposits, unconformably overlying the basement rocks. The alluvial deposits are composed mainly of unconsolidated layers of gravel, sand, silt, and clays. The aquifer is unconfined and is laterally bounded by the impermeable Neogene clays. The methods used in this study include the carry out of pumping tests and the analysis of well inventory data in addition to the river discharge rates and other meteorological data. The average annual discharge of the River Gash is estimated to be 1,056 × 106 m3 at El Gera gage station (upstream) and 587 × 106 m3 at Salam-Alikum gage station (downstream). The annual loss mounts up to 40% of the total discharge. The water loss is attributed to infiltration and evapotranspiration. The present study proofs that the hydraulic conductivity ranges from 36 to 105 m/day, whereas the transmissivity ranges from 328 to 1,677 m2/day. The monitoring of groundwater level measurements indicates that the water table rises during the rainy season by 9 m in the upstream and 6 m in the midstream areas. The storage capacity of the upper and middle parts of the River Gash Basin is calculated as 502 × 106 m3. The groundwater input reach 386.11 × 106 m3/year, while the groundwater output is calculated as 365.98 × 106 m3/year. The estimated difference between the input and output water quantities in the upper and middle parts of the River Gash Basin demonstrates a positive groundwater budget by about 20 × 106 m3/year

2 Wagener, T.; Franks, S.; Gupta, H. V.; Bogh, E.; Bastidas, L.; Nobre, C.; de Oliverira Galvao, C. (Eds.) 2005. Regional hydrological impacts of climatic change: impact assessment and decision making. Proceedings of the International Symposium on Regional Hydrological Impacts of Climate Variability and Change with an Emphasis on Less Developed Countries (S6) held during the 7th Scientific Assembly of the International Association of Hydrological Sciences (IAHS), Foz do Iguaco, Brazil, 3-9 April 2005. Part 1. Wallingford, UK: International Association of Hydrological Sciences (IAHS). 356p. (IAHS Publication 295)
Climate change ; Hydrological factors ; Impact assessment ; Decision making ; Agricultural development ; River basins ; Water resources ; Water management ; Coastal area ; Stream flow ; Catchment areas ; Semiarid climate ; Lakes ; Population growth ; Air pollution ; Land cover change ; Hydroelectric schemes ; Flooding ; Evapotranspiration ; Watersheds ; GIS ; Arid zones ; Semiarid zones ; Sea water ; Water temperature ; Alluvial aquifers ; Models ; Satellite observation ; Forecasting ; Afforestation ; El Nino-Southern Oscillation ; Case studies / South America / North America / Europe / Africa / Asia / Brazil / Argentina / USA / Greece / Balkan Peninsula / West Africa / Benin / Cameroon / Lebanon / Nepal / Pakistan / India / China / Western Australia / Northeast Brazil / Trinidad / Vietnam / Eastern Australia / La Plata Basin / Taquari River Basin / Patagonia / Aliakmon River Basin / Black Sea / Volta Basin / Logone-Chari Plain / Himalayan Basin / Upper Indus Basin / Ganga Basin / Damodar River Basin / Yellow River Basin / Susannah Brook / Nordeste / St. Joseph Watershed / Himalayas / Red River Basin / Indian Ocean
(Location: IWMI HQ Call no: 577.22 G000 WAG Record No: H046622)
http://vlibrary.iwmi.org/pdf/H046622_TOC.pdf
(0.44 MB)

3 Walker, D.; Jovanovic, N.; Bugan, R.; Abiye, T.; du Preez, D.; Parkin, G.; Gowing, J. 2018. Alluvial aquifer characterisation and resource assessment of the Molototsi sand river, Limpopo, South Africa. Journal of Hydrology: Regional Studies, 19:177-192. [doi: https://doi.org/10.1016/j.ejrh.2018.09.002]
Alluvial aquifers ; Groundwater recharge ; Resource management ; Rivers ; Groundwater table ; Boreholes ; Water storage ; Water quality ; Hydrology ; Hydraulic conductivity ; Models ; Catchment areas ; Rain / South Africa / Limpopo / Molototsi Sand River
(Location: IWMI HQ Call no: e-copy only Record No: H048914)
https://www.sciencedirect.com/science/article/pii/S2214581818301125/pdfft?md5=1764e9c0a4f0d0074b1aa4ae135626f1&pid=1-s2.0-S2214581818301125-main.pdf
https://vlibrary.iwmi.org/pdf/H048914.pdf
(4.19 MB) (4.19 MB)
Study region: Molototsi sand river, Limpopo, South Africa.
Study focus: Ephemeral sand rivers are common throughout the world’s dryland regions, often providing a water source where more conventional sources are unavailable. However, these alluvial aquifers are poorly represented in the literature. Extensive field investigations allowed estimation of stored water volume and characterisation of an alluvial aquifer.
New hydrological insights for the region: Computed alluvial aquifer properties included hydraulic conductivity of 20–300 m/d, porosity of 38–40%, and aquifer thickness of 0–6 m. Dykes and other subcrops commonly compartmentalise the aquifer though do not form barriers to flow. A hydraulic disconnect between deep groundwater (occurring in fractured metamorphic rocks) and the alluvial aquifer was revealed by groundwater levels and contrasting hydrochemistry and stable isotope signatures. The dominant recharge process of the alluvial aquifer is surface runoff occurring from torrential tributaries in the catchment’s upper reaches. A fraction of available storage is currently abstracted and there exists potential for greater exploitation for smallholder irrigation and other uses.

4 Thangarajan, M.; Singh, V. P. (Eds.) 2016. Groundwater assessment, modeling, and management. Boca Raton, FL, USA: CRC Press. 511p.
Groundwater assessment ; Groundwater management ; Models ; Water availability ; Water quality ; Water purification ; Water use ; Water resources ; Groundwater flow ; Groundwater recharge ; Alluvial aquifers ; Climate change ; Coastal area ; Water pollution ; Saline water ; Arsenic ; Contamination ; Freshwater ; Carbon dioxide ; Ion exchange ; Fluorides ; Hydraulic conductivity ; Geographical information systems ; Forecasting ; Optimization ; Food security ; Agricultural production ; Rice ; Rivers ; Hydrogeology ; Hydraulic fracturing ; Case studies / Africa South of Sahara / Southern Africa / East Africa / India / Brazil / Botswana / Okavango Delta / Cauvery River / Ganges River / Boro River Valley / Gangetic Plains / Maharashtra / Tamil Nadu
(Location: IWMI HQ Call no: e-copy SF Record No: H049342)

5 World Bank. 2020. Managing groundwater for drought resilience in South Asia. [Delivered under the South Asia Water Initiative (SAWI) Regional Cross-Cutting Knowledge, Dialogue, and Cooperation Focus Area]. Washington, DC, USA: World Bank. 91p.
Groundwater management ; Drought ; Resilience ; Climate change ; Water scarcity ; Groundwater recharge ; Groundwater irrigation ; Water governance ; Water policy ; Water institutions ; Groundwater pollution ; Contamination ; Alluvial aquifers ; Hydrogeology ; Water depletion ; Tube wells ; Solar energy ; Legal aspects ; Urban areas ; Communities ; Case studies / South Asia / Afghanistan / Bangladesh / Bhutan / India / Nepal / Pakistan / Sri Lanka / Maldives / Indo-Gangetic Basin / Andhra Pradesh / Gujarat / Uttar Pradesh / Bhuj / Balochistan
(Location: IWMI HQ Call no: e-copy only Record No: H049599)
https://openknowledge.worldbank.org/bitstream/handle/10986/33332/W19027.pdf?sequence=4&isAllowed=y
https://vlibrary.iwmi.org/pdf/H049599.pdf
(7.17 MB) (7.17 MB)
This report presents the findings of a diagnostic study examining pathways and options for strengthening the governance of South Asia’s groundwater resources in the face of climate change and increasing reliance on the resource by dependent communities, particularly during times of drought. This study identifies, analyzes, and recommends management interventions that aid reforms of groundwater governance and, thus, greater sustainability of groundwater; in addition, these management interventions can strengthen drought resilience within the South Asia region. A broad analytical framework and a series of case studies comprise most of the report. These cover a range of policy and management approaches in different hydrogeological and socioeconomic settings with reference to key groundwater challenges. They provide insights and potential solutions, tailored to specific groundwater resources and contextual problems across South Asia.

6 Srivastava, A. K.; Parimal, P. S. 2020. Source rock weathering and groundwater suitability for irrigation in Purna Alluvial Basin, Maharashtra, Central India. Journal of Earth System Science, 129(1):52. [doi: https://doi.org/10.1007/s12040-019-1312-5]
Groundwater assessment ; Water quality ; Weathering ; Monsoon climate ; Chemicophysical properties ; Irrigation water ; Salinity ; Wells ; Hydrogeology ; Alluvial aquifers / India / Maharashtra / Purna Alluvial Basin / Purna River
(Location: IWMI HQ Call no: e-copy only Record No: H049763)
https://vlibrary.iwmi.org/pdf/H049763.pdf
(0.36 MB)
Purna alluvial basin is characterized by low to high level groundwater salinity having adverse effect in a large area, however, the basin still lacks one-time data of any season regarding hydrogeochemistry and quality assessment for drinking and irrigation purposes. The present work is aimed to determine various weathering indices and estimation of groundwater quality for irrigation purpose. The interpretations are based on the study of total 158 samples, collected from dug wells (60) and bore wells (98) during both pre- and post-monsoon periods of the year 2009. The plots between Ca+Mg vs. SO4+HCO3, Na vs. Cl and Na vs. HCO3 reveal that most of the samples fall below the equiline that indicates prevalence of silicate weathering. The USSL diagram (Wilcox diagram) demonstrates higher concentration of points in the fields of C2S1 and C3S1 for both the aquifers, indicating high salinity and low to medium sodium water; however, a few sample points positioned in C3S4 and C4S4 fields indicate high salinity but medium to high sodium. The values of Na%, RSC, Kelley ratio and magnesium ratio for most of samples exhibit doubtful to unsuitable categories of groundwater for irrigation from both the aquifers during pre- and post-monsoon periods. The vast data bank generated for entire basin is significant for government and non-government organizations for future planning and management.

7 Chamine, H. I.; Barbieri, M.; Kisi, O.; Chen, M.; Merkel, B. J. (Eds.) 2019. Advances in sustainable and environmental hydrology, hydrogeology, hydrochemistry and water resources. Proceedings of the 1st Springer Conference of the Arabian Journal of Geosciences (CAJG-1), Hammamet, Tunisia, 12-15 November 2018. Cham, Switzerland: Springer. 449p. (Advances in Science, Technology and Innovation: IEREK Interdisciplinary Series for Sustainable Development) [doi: https://doi.org/10.1007/978-3-030-01572-5]
Hydrology ; Hydrogeology ; Water resources ; Water management ; Sustainable development ; Water reuse ; Wastewater irrigation ; Wastewater treatment ; Water balance ; Water footprint ; Water governance ; Groundwater table ; Water levels ; Groundwater recharge ; Alluvial aquifers ; Water quality ; Water pollution ; Contamination ; Surface water ; Evapotranspiration ; Soil water content ; Drinking water ; Chemicophysical properties ; Climate change ; Drought ; Flooding ; Precipitation ; Forecasting ; Rainfall-runoff relationships ; Snow cover ; Geographical information systems ; Remote sensing ; Satellite observation ; Landsat ; Stream flow ; Saltwater intrusion ; Coastal area ; Salinity ; Farmers ; Fertilizers ; Dams ; Malaria ; Sediment ; Catchment areas ; Wetlands ; Rivers ; Watersheds ; Semiarid zones ; Urbanization ; Reservoirs ; Environment ; Case studies ; Models / Mediterranean region / Russian Federation / Spain / Portugal / France / Cambodia / Indonesia / Tunisia / Algeria / Iraq / Vietnam / Nigeria / Turkey / Morocco / Sudan / Kuwait / Ethiopia / Malaysia / Senegal / Ghana / Oman / Iran Islamic Republic / Egypt / Palestine / South Africa / Bangladesh / India / Pakistan / Baribo Basin / Medjerda River / Sebaou River / Seyhan Basin / Great Kabylia / Boukadir Wadi / Sidi Bel Abbes Basin / Gilgit River Basin / Moscow / Chennai / Telangana
(Location: IWMI HQ Call no: e-copy SF Record No: H049482)

8 Lapworth, D. J.; Dochartaigh, B. O.; Nair, T.; O'Keeffe, J.; Krishan, G.; MacDonald, A. M.; Khan, M.; Kelkar, N.; Choudhary, S.; Krishnaswamy, J.; Jackson, C. R. 2021. Characterising groundwater-surface water connectivity in the Lower Gandak Catchment, a barrage regulated biodiversity hotspot in the mid-Gangetic Basin. Journal of Hydrology, 594:125923. (Online first) [doi: https://doi.org/10.1016/j.jhydrol.2020.125923]
Groundwater recharge ; Groundwater table ; Water levels ; Surface water ; Catchment areas ; River basins ; Biodiversity ; Ecology ; Salinity ; Irrigation canals ; Discharges ; Water extraction ; Monitoring ; Drinking water ; Alluvial aquifers ; Rain ; Isotope analysis / India / Indo-Gangetic Basin / River Gandak
(Location: IWMI HQ Call no: e-copy only Record No: H050154)
https://vlibrary.iwmi.org/pdf/H050154.pdf
(13.00 MB)
The alluvial aquifer system of the Indo-Gangetic Basin (IGB) is one of the world’s most important freshwater resources, sustaining humans and river ecosystems. Understanding groundwater recharge processes and connections to meteoric and surface water is necessary for effective water resource management for human and wider ecological requirements. Parts of the mid-Gangetic Basin, across eastern Uttar Pradesh and Bihar, are characterised by stable long-term groundwater levels, high annual rainfall, and limited historical groundwater use compared to parts of Northwest India for example. In this paper we use a combination of environmental tracers and hydrograph observations to characterise sources of recharge and groundwater-surface water interaction using a transect approach across the catchment of the River Gandak, a major barrage-regulated tributary of the River Ganga. Stable isotope results show that the dominant source of groundwater recharge, in the shallow (0–40 m bgl) Holocene and underlying Pleistocene aquifer system (>40 m bgl), is local rainfall. The shallow Holocene aquifer is also supplemented by local recharge from river and canal seepage and irrigation return flow in the upper and mid parts of the catchment. These observations are corroborated by evidence from detailed groundwater hydrographs and salinity observations, indicating localised canal, river and lake connectivity to groundwater. In the middle and lower catchment, river discharge is dominated by groundwater baseflow during the peak dry season when barrage gates are closed, which contributes to ecological flows for endangered river dolphins and gharial crocodiles. Groundwater residence time tracers indicate active modern recharge in the shallow alluvial aquifer system across the catchment. In the shallow Holocene aquifer elevated arsenic (As), iron (Fe), and manganese (Mn) exceeded WHO drinking water guidelines in a minority of sites, and uranium (U) and fluoride (F) concentrations approach but do not exceed the WHO guideline values. These observations varied across the catchment with higher As, Fe and Mn in the upper and mid catchments and higher U in the lower catchment. Groundwater salinity was typically between 500 and 1000 µS/cm, and isolated higher salinity was due to recharge from flood-plain wetlands and lakes impacted by evaporation. At present, the Gandak catchment has relatively high rainfall and low abstraction, which maintains stable groundwater levels and thus baseflow to the river in the dry season. Potential future threats to groundwater resources, and therefore river ecology due to the sensitivity to changes in baseflow in the catchment, would likely be driven by reductions in local monsoon rainfall, changes in water management practices and increased groundwater use.

9 Duy, N. L.; Nguyen, T. V. K.; Nguyen, D. V.; Tran, A. T.; Nguyen, H. T.; Heidbüchel, I.; Merz, B.; Apel, H. 2021. Groundwater dynamics in the Vietnamese Mekong Delta: trends, memory effects, and response times. Journal of Hydrology: Regional Studies, 33:100746. [doi: https://doi.org/10.1016/j.ejrh.2020.100746]
Groundwater table ; Alluvial aquifers ; Surface water ; Water levels ; Groundwater recharge ; Groundwater extraction ; Coastal areas ; Flooding ; Deltas ; Hydrology ; Trends ; Time series analysis / Vietnam / Mekong Delta
(Location: IWMI HQ Call no: e-copy only Record No: H050286)
https://www.sciencedirect.com/science/article/pii/S2214581820302202/pdfft?md5=b8797d9247dc390e0ee5968b020889b8&pid=1-s2.0-S2214581820302202-main.pdf
https://vlibrary.iwmi.org/pdf/H050286.pdf
(9.24 MB) (9.24 MB)
Study Region: Vietnamese Mekong Delta.
Study focus : This study investigates the trends of groundwater levels (GWLs), the memory effect of alluvial aquifers, and the response times between surface water and groundwater across the Vietnamese Mekong Delta (VMD). Trend analysis, auto- and cross-correlation, and time-series decomposition were applied within a moving window approach to examine non-stationary behavior.
New hydrological insights : Our study revealed an effective connection between the shallowest aquifer unit (Holocene) and surface water, and a high potential for shallow groundwater recharge. However, low-permeable aquicludes separating the aquifers behave as low-pass filters that reduce the high-frequency signals in the GWL variations, and limit the recharge to the deep groundwater. Declining GWLs (0.01-0.55 m/year) were detected for all aquifers throughout the 22 years of observation, indicating that the groundwater abstraction exceeds groundwater recharge. Stronger declining trends were detected for deeper groundwater. The dynamic trend analysis indicates that the decrease of GWLs accelerated continuously. The groundwater memory effect varied according to the geographical location, being shorter in shallow aquifers and flood-prone areas and longer in deep aquifers and coastal areas. Variation of the response time between the river and alluvial aquifers was controlled by groundwater depth and season. The response time was shorter during the flood season, indicating that the bulk of groundwater recharge occurred in the late flood season, particularly in the deep aquifers.

10 Joshi, S. K.; Gupta, S.; Sinha, R.; Densmore, A. L.; Rai, S. P.; Shekhar, S.; Mason, P. J.; van Dijk, W. M. 2021. Strongly heterogeneous patterns of groundwater depletion in northwestern India. Journal of Hydrology, 598:126492. [doi: https://doi.org/10.1016/j.jhydrol.2021.126492]
Groundwater depletion ; Alluvial aquifers ; Groundwater recharge ; Groundwater table ; Water storage ; Water levels ; Sediment ; Geomorphology ; Groundwater extraction ; Water quality ; Pumping ; Rain ; Sustainability / India / Indo-Gangetic Basin / Yamuna River / Sutlej River / Ghaggar River
(Location: IWMI HQ Call no: e-copy only Record No: H050419)
https://www.sciencedirect.com/science/article/pii/S0022169421005394/pdfft?md5=4238a9b73d1cc86e0bcf36ba7b4751b9&pid=1-s2.0-S0022169421005394-main.pdf
https://vlibrary.iwmi.org/pdf/H050419.pdf
(15.90 MB) (15.9 MB)
Northwestern India has been identified as a significant hotspot of groundwater depletion, with major implications for groundwater sustainability caused by excessive abstraction. We know relatively little about the detailed spatial and temporal changes in groundwater storage in this region, nor do we understand the interplay of factors controlling these changes. Groundwater managers and policymakers in India require such information to monitor groundwater development and make strategic decisions for the sustainable management of groundwater. Here, we characterise high-resolution spatio-temporal variability in groundwater levels and storage change across northwestern India through analysis of in situ measurements of historical groundwater level data. We note a slow gain in groundwater storage of + 0.58 ± 0.35 km3 for the pre-monsoon and + 0.40 ± 0.35 km3 for the post-monsoon period between 1974 and 2001. However, from 2002 to 2010, groundwater storage was rapidly depleted by -32.30 ± 0.34 km3 in the pre-monsoon and -24.42 ± 0.34 km3 in the post-monsoon period. Importantly, we observe marked spatial heterogeneity in groundwater levels and storage change and distinct hotspots of groundwater depletion with lateral length scales of tens of kilometers. Spatial variability in groundwater abstraction partially explains the depletion pattern, but we also find that the sedimentological heterogeneity of the aquifer system correlates broadly with long-term patterns of groundwater-level change. This correlation, along with the spatial agreement between groundwater level change and water quality, provides a framework for anticipating future depletion patterns and guiding groundwater monitoring and domain-specific management strategies.

11 Re, V.; Manzione, R. L.; Abiye, T. A.; Mukherji, Aditi; MacDonald, A. (Eds.) 2022. Groundwater for sustainable livelihoods and equitable growth. Leiden, Netherlands: CRC Press - Balkema. 367p. (IAH - International Contributions to Hydrogeology 30) [doi: https://doi.org/10.1201/9781003024101]
Groundwater management ; Sustainable livelihoods ; Equity ; Water resources ; Water security ; Groundwater recharge ; Groundwater extraction ; Groundwater irrigation ; Small scale systems ; Water use ; Conjunctive use ; Surface water ; Water scarcity ; Water governance ; Water policies ; Legal frameworks ; Water supply ; Water harvesting ; River basins ; Watersheds ; Water springs ; Wells ; Alluvial aquifers ; Hydrogeology ; Climate change ; Resilience ; Adaptation ; Strategies ; Urban development ; Landscape conservation ; Periurban areas ; Rural areas ; Villages ; Coastal areas ; Stubble burning ; Rice ; Smallholders ; Farmers ; Households ; Socioeconomic development ; Case studies / Africa / South America / Asia / Sahel / Niger / Ghana / Togo / Ethiopia / Zimbabwe / Chad / Malawi / United Republic of Tanzania / Libya / India / Indonesia / Myanmar / Lao People's Democratic Republic / Brazil / West Bengal / Haryana / Gunungsewu Karst Area / Vientiane Plain / Shan State / Techiman Municipality / Rio de Janeiro / Lome / Harare / Tigray / Al Jabal Al Akhdar / Kachchh / Mato Grosso do Sul / Taunggyi / Ekxang / Sume Alluvial Aquifer / Tekeze River Basin / Lake Chad Basin / Great Ruaha River Catchment / Guandu River Basin
(Location: IWMI HQ Call no: IWMI Record No: H051156)
https://vlibrary.iwmi.org/pdf/H051156_TOC.pdf
(0.76 MB)
Groundwater for Sustainable Livelihoods and Equitable Growth explores how groundwater, often invisibly, improves peoples’ lives and livelihoods. This unique collection of 19 studies captures experiences of groundwater making a difference in 16 countries in Africa, South America and Asia. Such studies are rarely documented and this book provides a rich new collection of interdisciplinary analysis. The book is published in colour and includes many original diagrams and photographs.
Spring water, wells or boreholes have provided safe drinking water and reliable water for irrigation or industry for millennia. However, the hidden nature of groundwater often means that it’s important role both historically and in the present is overlooked. This collection helps fill this knowledge gap, providing a diverse set of new studies encompassing different perspectives and geographies. Different interdisciplinary methodologies are described that can help understand linkages between groundwater, livelihoods and growth, and how these links can be threatened by over-use, contamination, and ignorance.
Written for a worldwide audience of practitioners, academics and students with backgrounds in geology, engineering or environmental sciences; Groundwater for Sustainable Livelihoods and Equitable Growth is essential reading for those involved in groundwater and international development.

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