Assessment on the Vulnerability of Fangshan Karst Groundwater in Beijing Based on European Model

The North China Approach to assess karst groundwater vulnerability was proposed based on European Model, modifying C and P factors to adapt the specificity of karst regions specificity in North China. It was firstly applied to the Fangshan karst regions in Beijing and the vulnerability maps indicate high vulnerability nearby karst caves and the areas lacking overlying soil.

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Vulnerability Assessment as a Basis for Sanitary Zone Delineation of Karst Groundwater Sources—Blederija Spring Case Study

Water ◽

10.3390/w13192775 ◽

2021 ◽

Vol 13 (19) ◽

pp. 2775

Author(s):

Vladimir Živanović ◽

Nebojša Atanacković ◽

Saša Stojadinović

Keyword(s):

Vulnerability Assessment ◽

Groundwater Vulnerability ◽

Assessment Method ◽

Karst Groundwater ◽

Karst Spring ◽

Aquifer Recharge ◽

Protection Zones ◽

Groundwater Vulnerability Assessment ◽

Vulnerability Maps ◽

Dependent Model

The application of groundwater vulnerability methods has great importance for the sanitary protection zones delineation of karstic sources. Source vulnerability assessment of karst groundwater has mainly relied on the European approach (European Cooperation in Science and Technology—COST action 620), which includes analysis of the K factor, which refers to water flow through the saturated zone of the karst system. In the paper, two approaches to groundwater vulnerability assessment have been applied, COP + K and TDM (Time-Dependent Model) methods, to produce the most suitable source vulnerability map that can be transformed into sanitary protection zones maps. Both methods were tested on the case example of Blederija karst spring in Eastern Serbia. This spring represents a classical karst spring with allogenic and autogenic recharge. Dual aquifer recharge points out the necessity for the inclusion of the vulnerability assessment method created especially for the assessment of karst groundwater. Obtained vulnerability maps show similar results, particularly in the spring and the ponor areas, and these zones are most important for future protection. The COP + K method brings out three vulnerability classes that can be directly transformed into three sanitary protection zones. Contrary to the previous one, the TDM method uses water travel time as a vulnerability degree. The results show that the final map can be easily used to define sanitary zones considering different national legislation.

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Karst groundwater vulnerability mapping to the pollution: Case of Dir springs located between EL KSIBA and Ouaoumana (High Atlas, Morocco)

E3S Web of Conferences ◽

10.1051/e3sconf/20183701004 ◽

2018 ◽

Vol 37 ◽

pp. 01004 ◽

Cited By ~ 1

Author(s):

L. Alili ◽

A. Boukdir ◽

M. R. Maslouhi ◽

H. Ikhmerdi

Keyword(s):

Groundwater Vulnerability ◽

Vulnerability Index ◽

Karst Groundwater ◽

High Atlas ◽

The North ◽

Groundwater Vulnerability Mapping ◽

Protective Cover ◽

The Subject ◽

Gis Software ◽

Hydrographic Network

The study area is located in the north of the province of Beni Mellal, it covers the Piedmont of the high Atlas between El Ksiba and Ouaoumana. It is characterized by a poorly developed hydrographic network and the presence of very important karstic forms. These forms condition the rapid infiltration to the karstic springs are the subject of this study. In this work we presented a method of mapping the vulnerability to pollution of Karstic springs located between El Ksiba and Ouaoumana. To do this, we have introduced a vulnerability index called F which takes into account four parameters (EPIK): Development of the Epikarst, importance of the protective cover, infiltration conditions and development of the Karst network. The overlay of the thematic maps of these parameters through a GIS software (ArcGIS) gave us a map of the vulnerability to contamination on the whole hydrogeological basin of the springs.

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