Changes of the Morphology of the Ropa River — Upstream and Downstream of the Klimkowka Water Reservoir

Abstract

The paper outlines changes in the channel morphology of the Ropa riverbed over the last six years, taking into account the role of large floods and the Klimkówka water reservoir in shaping the morphology of the riverbed. The analysis was based on annual geodetic measurements of the Ropa riverbed conducted between 2009-2014. The research was carried out in four cross profiles of the riverbed located upstream (1 profile) and downstream (3 profiles) of the reservoir. In order to recognise the direction and scale of morphology changes of the riverbed, additional analyses of water levels in the Ropa River was performed in the analysed multiannual period. The conducted analysis led to the conclusion that floods with extremely large discharges are the key factor causing the deepening of the riverbed downstream from the reservoir. It can be up to about 70 cm deep during a single event. The reservoir is just one additional factor of many which shape the direction and scale of changes to the riverbed. A significant role in modifying the riverbed morphology upstream from the reservoir is played by river control works, which diminish the effects of sediment accumulation occurring on this section.

The Assessment of the Quality and Quantity of Water Retained in Closed Granite Quarries with the View to Mitigate the Effects of Droughts in Agriculture

“…The average pH values fell into the range of 7.61-7.98 (Figure 3), where the highest values (pH 9.0 and 9.3) were noted in the eutrophic [46,135] granite quarries Q3 and Q5. Such pH values were noted in the spring and summer, which means that they are probably linked to strong photosynthesis in the summer season, where a rapid growth of phytoplanctone and intensified photosynthesis may lead to alkalinisation and, thus, an increase in the pH of the water [136,137]. Similar results (pH 7.7-8.4 (max.…”

Malacological indicators of anthropogenic and natural environmental changes of the Podhale Basin during the last 2000 years. Studies in the Rogoźnik Stream valley (the Carpathian Mountains, Southern Poland)

“…The disappearance of forests and the appearance of open habitats (arable fields and pastures) significantly influence erosion and sediment deposition processes, especially those accumulated in river valleys (e.g. Starkel 1987, 2005, Kukulak 2003, Gębica 2013, Kijowska-Strugała et al 2018, Łajczak 2021. A decrease in retention on valley slopes and runoff processes leads to the deposition of sediments of significant thickness, at the same time representing short periods of time (e.g.…”

“…A decrease in retention on valley slopes and runoff processes leads to the deposition of sediments of significant thickness, at the same time representing short periods of time (e.g. Gębica 2013a, Łajczak et al 2014, Alexandrowicz 2019b, Łajczak 2021). These formations, sometimes called agricultural alluvial soils, are frequently found in river and stream valleys in Polish Carpathians (e.g.…”

Floods in a Mountain Stream of the Western Carpathians (Se Poland)

“…The floods initiate the transport of clastic material from the basin, which is mainly movement to areas used for agriculture, or other areas of human activity (road investments, strengthening against landslides) [1]. Such above-average hydrological events (e.g floods in 2010) cause transformations in river channels [2], [3]. The purpose of this article is to characterize floods, distinguished on the basis of genetic criteria [4], in the Bystrzanka stream, by defining the following parameters: outflow size, time of concentration, duration and participation in drainage of water from the catchment.…”