Publication detail

Modelling hazards impacting the flow regime in the Hranice Karst due to the proposed Skalicka Dam

ŠPANO, M. ŘÍHA, J.

Original Title

Modelling hazards impacting the flow regime in the Hranice Karst due to the proposed Skalicka Dam

Type

journal article in Web of Science

Language

English

Original Abstract

This study examines the hydrogeological hazard associated with the construction of the proposed Skalička Dam in the vicinity of the Hranice Karst. Prompted by the catastrophic regional floods in 1997 and 2010, the design of the dam aims to mitigate floods along the Bečva River downstream of the reservoir. However, concerns have been raised regarding the potential disturbance of the natural groundwater regime in the Hranice Karst and the source of mineral waters for the Teplice spa. This is due in particular to the dam's location in an area with limestone outcrops potentially susceptible to surface-water infiltration. Previous studies have also highlighted the strong correlation between the water level in the Bečva River and the water level in karst formations such as the Hranice Abyss, Zbrašov Aragonite Caves, and other caves in the locality. To address these concerns, a nonlinear reservoir-pipe groundwater flow model was employed to simulate the behaviour of the Hranice Karst aquifer and specifically the effects of the dam reservoir's impoundment. The study concluded that the lateral variant of the dam would have a practically negligible impact on the karst water system, with the rise in water level being only a few centimetres. The through-flow variant was found to have a more significant potential impact on water levels and the outflow of mineral water to the spa, with a piezometric rise of about 1 m and an increase in the karst water discharge to the Bečva River of more than 50 %. Based on these results, recommendations for further investigations concerning the design of the dam and its eventual construction have been formulated to reduce geological uncertainties and to minimize the potential impact of the hydraulic scheme on the hydrogeology of the karstic system.

Keywords

dam, geological uncertainty, karst system

Authors

ŠPANO, M.; ŘÍHA, J.

Released

30. 10. 2024

Publisher

EGU - European Geosciences Union

Location

Munich, Germany

ISBN

1561-8633

Periodical

Natural Hazards and Earth System Sciences

Year of study

24

Number

11

State

Federal Republic of Germany

Pages from

3683

Pages to

3701

Pages count

19

URL

https://nhess.copernicus.org/articles/24/issue11.html

Full text in the Digital Library

http://hdl.handle.net/11012/249754

BibTex

@article{BUT190048,
  author="Miroslav {Špano} and Jaromír {Říha}",
  title="Modelling hazards impacting the flow regime in the Hranice Karst due to the proposed Skalicka Dam",
  journal="Natural Hazards and Earth System Sciences",
  year="2024",
  volume="24",
  number="11",
  pages="3683--3701",
  doi="10.5194/nhess-24-3683-2024",
  issn="1561-8633",
  url="https://nhess.copernicus.org/articles/24/issue11.html"
}