Groundwater vulnerability mapping for a sub-catchment of the Rio La Venta watershed, Chiapas, Mexico

Kovarik, Johanna L.; Beynen, Kaya Van; Niedzielski, Michael A.

doi:10.1007/s12665-017-7113-8

Cited by 8 publications

(1 citation statement)

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“…The fundamental COP factors are those concerning the framework and thickness of the soil, which strongly influence the overlying layers (O factor) and consequently the final vulnerability value, and the thickness of the unsaturated zone (O L ), especially in karst and fractured carbonate rocks. Parameter dh (karst elements, in the calculation of parameter C) is the most relevant, since areas within a distance of 50 m from the sinkhole are given a value equal to 0, which is able to cancel both the factor O and the factor P in the final calculations (Tayer and Velásques 2017;Kovarik et al 2017). Finally, the P factor plays an important role only in the case of a moderate to low vulnerability, while in cases where the C and O factors are very low, the precipitation factor (P) plays a negligible role.…”

Section: Vulnerability Mapsmentioning

confidence: 99%

Karst groundwater vulnerability assessment: application of an integrative index-based approach to main catchments of middle Valseriana springs (Northern Italy)

et al. 2021

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The study aim was to assess the intrinsic vulnerability of the middle Valseriana (northern Italy) through a methodology that could fully consider the peculiar characteristics of the Pre-Alps region. After applying classical methods for karst environments (COP and EPIK), the integrative COPA+K method was developed for the Nossana (dominant drainage system) and Ponte del Costone (dispersive circulation system) spring catchments. The COPA+K approach exploits the potential of the COP method with the addition of two factors: the influence of the main discontinuities on the water system according to their distance from the spring (A factor), and the development of the karst network (K factor). The COP and COPA+K maps were validated based on the characteristic correlation, for the study area, between the values of δ18O and the elevation of recharge areas. Compared to COP, the COPA+K results appeared more stringent in the identification of areas characterized by high vulnerability, which passed from 35.6% to 23.6% of the entire study area. COPA+K also made possible to better differentiate the behavior of the two catchments. In terms of high susceptible areas, their percentage difference increased by 12.3%, correctly emphasizing the greater susceptibility of the Nossana drainage system in comparison with the Ponte del Costone dispersive one. For the COPA+K map, in the Nossana catchment, the δ18O values indicated a good agreement between the mean elevation of high vulnerable and water recharge areas (± 106 m). For Ponte del Costone, the isotopic data indicated a possible mixing with the waters of the Serio River.

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Section: Vulnerability Mapsmentioning

confidence: 99%