Piezometric levels in the Piedmont plain (NW Italy): trend and hydrodynamic behaviour of the shallow aquifer

2019 ◽  
Vol 48 ◽  
pp. 2-9 ◽  
Author(s):  
Manuela Lasagna ◽  
Susanna Mancini ◽  
Domenico Antonio De Luca ◽  
Michela Cravero
Keyword(s):  
Shallow Aquifer ◽  
Piedmont Plain ◽  
Hydrodynamic Behaviour ◽  
Nw Italy

scholarly journals Groundwater Depletion in an Urban Environment under Semiarid Climate and Persistent Drought–City of Marrakesh (Morocco)

Water ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3253
Author(s):  
Mohammed Analy ◽  
Nour-Eddine Laftouhi
Keyword(s):  
Water Table ◽  
Groundwater Resources ◽  
Shallow Aquifer ◽  
Arid Climate ◽  
Groundwater Depletion ◽  
Hydrodynamic Behaviour ◽  
General Decline ◽  
Persistent Drought ◽  
The Impact ◽  
Semi Arid

The quantitative monitoring of the shallow aquifer in Marrakesh and its surrounding area shows that the water table has been lowered gradually over the last 40 years, and attaining an acute decline in the early 2000s. This declining trend—if confirmed in the future—may lead to a water shortage, or even to a total aquifer depletion, which would be devastating for a region where economic activity and drinking water supply rely partly on groundwater resources. Two factors account for this situation: the hot semi-arid climate characterized by high temperatures and low precipitation, causing an inadequate groundwater recharge (deficit between rainwater supply and the potential evapotranspiration), and the over-pumping of groundwater from wells for intensive agricultural uses and some leisure activities (golf courses, waterparks and pools, for example). The objective of this study is to assess the hydrodynamic behaviour of the shallow aquifer in this context of persistent drought and semi-arid climate under intense use conditions. Based on earlier research studies and hydrological data recently collected from the field, a spatiotemporal analysis using a geographic information system has been conducted, allowing researchers to monitor the evolution of groundwater resources under the impact of intense exploitation. This study shows a general decline of groundwater level in the city of Marrakesh between 1962–2019. However, by dividing this period into three periods (1962–1985, 1986–2001 and 2002–2019), it is obvious that the main groundwater fall occurred during the two last decades, a period marked by highest recorded temperatures and decreased precipitation levels. This water table decline impacted 85% of the study area and is estimated at 0.9 m/year. The area most affected by the drawdown of the water table experienced a decline reaching 37 m between 2002 and 2019 (more than 2 m a year).

Eutrophication of Piedmont Quarry Lakes (North-Western Italy): Hydrogeological Factors, Evaluation of Trophic Levels and Management Strategies

2015 ◽  
Vol 17 (04) ◽  
pp. 1550036 ◽  
Author(s):  
Sara Elisa Domenica Castagna ◽  
Domenico Antonio De Luca ◽  
Manuela Lasagna
Keyword(s):  
Water Quality ◽  
Environmental Sustainability ◽  
Management Strategies ◽  
Trophic Levels ◽  
Shallow Aquifer ◽  
Lake Water Quality ◽  
Piedmont Plain ◽  
Natural Lakes ◽  
Piezometric Surface ◽  
North Western

Quarry lakes resulting from alluvium extraction have excavation depths that can reach the shallow aquifer and extend beyond the piezometric surface. Similar to natural lakes, pit lakes are subject to eutrophication process, both during and after quarrying activity; during mining activity, the eutrophic level is strongly controlled by the excavation method. The present study describes the trophic status of several quarry lakes in the Piedmont plain (north-western Italy) that were evaluated by applying classifications from scientific literature. Most of the studied quarry lakes were mesotrophic or eutrophic, and a slight worsening of water quality was observed over time. In addition, the paper focuses on the pit lake water quality and pit dimension; it was shown that lakes with a larger depth and volume generally had a lower tendency towards eutrophication. At last some management strategies were suggested to achieve environmental sustainability.

Thermal model of the Piedmont Po Plain shallow aquifer (NW Italy) with the statistical temperature distribution

Geothermics ◽  
2020 ◽  
Vol 87 ◽  
pp. 101833 ◽  
Author(s):  
Diego Barbero ◽  
Arianna Bucci ◽  
Maria Gabriella Forno ◽  
Manuela Lasagna ◽  
Domenico Antonio De Luca
Keyword(s):  
Temperature Distribution ◽  
Thermal Model ◽  
Shallow Aquifer ◽  
Po Plain ◽  
Nw Italy

Potential of shallow aquifers in the plain sector of Piemonte region (NW Italy) for groundwater heat pumps diffusion

2015 ◽  
Vol 35 ◽  
pp. 180-183
Author(s):  
Stefano Lo Russo ◽  
Glenda Taddia ◽  
Elena Cerino Abdin
Keyword(s):  
Heat Pumps ◽  
Shallow Aquifers ◽  
Nw Italy ◽  
Groundwater Heat Pumps

Effect of conservation tillage on soil quality in the piedmont plain of Mount Taihang

2012 ◽  
Vol 19 (5) ◽  
pp. 1134-1142 ◽  
Author(s):  
Zhang-Liu DU ◽  
Wei-Da GAO ◽  
Su-Ying CHEN ◽  
Chun-Sheng HU ◽  
Tu-Sheng REN
Keyword(s):  
Soil Quality ◽  
Conservation Tillage ◽  
Piedmont Plain

Uniform Horizontal Groundwater Flow against Dispersion in a Shallow Aquifer: Two Analytical Models

1992 ◽  
Vol 23 (1) ◽  
pp. 1-12
Author(s):  
Ram Raj Vinda ◽  
Raja Ram Yadava ◽  
Naveen Kumar
Keyword(s):  
Point Source ◽  
Groundwater Flow ◽  
Cross Section ◽  
Analytical Solutions ◽  
Concentration Distribution ◽  
Analytical Models ◽  
Shallow Aquifer ◽  
Horizontal Cross Section ◽  
Flow Components ◽  
Reactive Pollutant

Analytical solutions converging rapidly at large and small values of times have been obtained for two mathematical models which describe the concentration distribution of a non reactive pollutant from a point source against the flow in a horizontal cross-section of a finite saturated shallow aquifer possessing uniform horizontal groundwater flow. Zero concentration or the conditions in which the flux across the extreme boundaries are proportional to the respective flow components are applied. The effects of flow and dispersion on concentration distribution are also discussed.

Evolution of groundwater chemistry on shallow aquifer of Yogyakarta City urban area

2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Doni Prakasa Eka Putra
Keyword(s):  
Shallow Groundwater ◽  
Unconfined Aquifer ◽  
Groundwater Chemistry ◽  
Shallow Aquifer ◽  
Nitrate Content ◽  
New Business ◽  
Urban Settlements ◽  
A Minor ◽  
New Settlements ◽  
Yogyakarta City

Since 1980s, accelerated by urbanization, Yogyakarta City was shifting to many directions defined by main road networks and service centres. Urbanization has transformed rural dwellings to become urban settlements and generated urban agglomeration area. Until now, new business centres, education centres and tourism centres are growing hand in hand with new settlements (formal or informal) without proper provision of water supply and sanitation system. This condition increase the possibility of groundwater contamination from urban wastewater and a change of major chemistry of groundwater as shallow unconfined aquifer is lying under Yogyakarta City. To prove the evolution of groundwater chemistry, old data taken on 1980s were comparing with the recent groundwater chemistry data. The evaluation shows that nitrate content of groundwater in 1980s was a minor anion, but nowadays become a major anion, especially in the shallow groundwater in the centre of Yogyakarta City. This evidence shows that there is an evolution of groundwater chemistry in shallow groundwater below Yogyakarta City due to contamination from un-proper on-site sanitation system. Keywords: Urbanization, Yogyakarta city, rural dwellings, settlements, agglomeration, contamination, groundwater

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