Comparative Assessment of Different Modelling Schemes and Their Applicability to Inland Small Reservoirs: A Central Europe Case Study

Abstract

Sustainable landscape management involve also water reservoir management. The demand of their reconstruction represents a good opportunity for redesigning hydrotechnical structures and their parameters using recent methods and models. The estimation of wind-driven waves on small water reservoirs and their effects on water reservoir structures rarely are applied, although it is an important part of the dam height calculation. The analysis of wave run-up on the upstream face of the dam was performed by means of the Slovak Technical Standard (STN), Coastal Engineering Manual (CEM), Shore Protection Manual (SPM) and model designed by American Society of Agricultural and Biological Engineers (ASABE). The estimations of the wave characteristics differ depending on the model; wave height (H13%) within the range 0.32–0.56 m, wave period 1.32–2.11 s and run-up (R2%) 0.84–1.68 m under conditions of design wind speed 25 m·s−1. Results obtained by CEM, SPM models predict lower values than STN and ASABE models. Since the height difference between the dam crest and still water level in the reservoir is only 0.90 m, we can expect overtopping of the crest by waves after the critical wind speed is exceeded.

Public recreation and landscape protection - with environment hand in hand…

“…The subject of protection is an ecologically important landscape element, a preserved meandering stream with natural meadow vegetation. The locality is also important as a nesting place for endangered bird species and a breeding ground for amphibians (Němcová, 2017). Aušperský stream feeds Horní rybník and Dolní rybník.…”

“…Dolní rybník is currently used for fish farming and commercial fishing. The pond is also used by locals for swimming and relaxation in the summer months (Němcová, 2017). Under the reservoirs, treated water from the industrial area flows into the stream.…”

“…(Haluzová, 2017). Furthermore, in the locality of interest, in the vegetation period of 2016, the collection and determination of algae and cyanobacteria were performed (Němcová, 2017). To monitor the quality in the stream, 5 sampling profiles were selected with regard to the location of the ponds and the location of the outlet of the treated wastewater from the industrial area.…”

“…Small water reservoirs (SWR) are an integral part of the agricultural landscape and make a significant contribution to the protection and creation of the environment. In addition, SWR significantly contribute to the improvement of water quality in the river basin (Pelikán et al, 2020). The quality of water in water reservoirs intended for recreation changes during the year.…”

Interdisciplinary Reservoir Management—A Tool for Sustainable Water Resources Management

“…The focus of the individual study is the crucial question, targeting very different aspects and focusing on very different projects in diverse regions of the world. Many studies focus on the effects and trade-offs of reservoir operation to provide best practice solutions for managerial questions around the natural environment e.g., water, sediment and nutrient/pollutant management [11][12][13][14][15][16][17][18]. Other foci are the governance and social spheres in water resources research.…”