Floods types in a mountain catchment: The Ochotnica River, Poland

Kijowska-Strugała, Małgorzata; Bucała-Hrabia, Anna

doi:10.3986/ags.2250

Cited by 10 publications

(8 citation statements)

References 37 publications

(31 reference statements)

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“…Average number of floods was 10.5 per year. This value is higher than the average recorded in the basin of the Ochotnica stream in Gorce Mountain [10]. The floods duration amounted to 14239 hours, representing 3.6% of the duration of the discussed period (Table 1).…”

Section: Resultsmentioning

confidence: 63%

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

Bochenek¹

2018

Proceedings 2019

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The aim of the study is to characterize the parameters of floods (volume, time of concentration, duration and share in the drainage of water from the catchment) shaped by various factors: snowmelt S, downpours Rh, continuous rainfall Rc, rainfall with variable intensity over time R(h+c) and mixed (snowmelt-rainfall R+S). The research was carried out in the Bystrzanka stream (13 km 2 catchment area) in the Western Polish Carpathians in the years 1971-2015. The results were obtained on the basis of the limnigram analysis from the water gauge closing the tested catchment. Floods show a high variability of events, duration and size of outflow in subsequent years. The total number of floods in the analyzed period was 408, of which the highest number were of Rh floods (132). Floods occurred on average for 3.6% of the analyzed period and amounted to 21.1% of the outgoing water.

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Section: Resultsmentioning

confidence: 63%

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

Bochenek¹

2018

Proceedings 2019

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“…The first covers the period from 1972 to 1996, when aggradation (3.9 cm year -1 ) was the predominant process, whereas from 1997 to 2011 incision (3.2 cm year -1 ) dominated. It should be noted that despite the change in the trend of the level of the Ochotnica channel, there were no statistically significant changes in the floods frequency in the analyzed period [8]. Discharge analysis confirmed incision of the Ochotnica channel.…”

Section: Dynamics Of River Channelsmentioning

confidence: 69%

“…This example showed that the same water level in the multiyear period corresponded to higher discharges, which was evidence of the river channel incision. The periods of the channel referred to the period of the centrally planned economy with a large share of cultivated land and incision referred to free market economy with a rapid decrease of arable land in Gorce catchments [8], [18]. The trend of the incision of the Ochotnica channel in recent years was compatible with the changes of the river channels level noted in the Beskidy Mountains [19].…”

Section: Dynamics Of River Channelsmentioning

confidence: 99%

“…One of the most important of them are channelization, gravel mining [4], [5] and dams construction [6]. Moreover, land use and land cover changes (LULCC) can also lead to a river channels changes [7], [8]. In the Polish Western Carpathians after Warld War II until the end of the 1980s, a continuous increase in population and dominance of agriculture in the structure of land use was recorded [9].…”

Section: Introductionmentioning

confidence: 99%

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Human Impact on the Functioning of River Channels in the Polish Carpathians

Kijowska-StrugaÅ‚a¹

2019

Proceedings 2019

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Human activities, apart from natural factors, play an important role in channels changes especially in mountain areas The main objective of the study was to assess the impact of human activities on the functioning of selected river channels in the Polish Western Carpathians in the last 50 years. The research showed a significant changes in the morphology of the river channels. There has been a general tendency to channel incision mainly due to floods, channel modification and land use/land cover changes (cultivated land abandonment and increase areas with forest and grassland). Channels incision was also observed below the dams. This was due to the reduced river load of bed and suspended sediment material, which was trapped in the reservoir, and the enhanced energy of the 'hungry water'. It was also found that the influence of reservoirs on the hydromorphological state of rivers below their location is diversified and not necessarily negative. In addition, suspended sediment load in small mountain stream in the period 1970-1999 decreased due to cultivated land abandonment. After that suspended sediment load increased as a result of the appearance of a new sediment sources associated with intensification of landslides and human activity, such as construction works. The results of this study can be used as a basis for to formulate policies and manage river systems in mountain areas.

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“…In the recent decades at the Ochotnica valley, two periods of channel development was discovered. Between 1976 and 1996, aggradation was the predominant process, whereas from 1997 to 2011, incision dominated (Kijowska-Strugała & Bucała-Hrabia, 2019). Krzemień (1984), as the first, was drawing attention to the domination of deep erosion in streams on northern slopes of the Gorce Mts.…”

Section: Fluvial Processes and Landformsmentioning

confidence: 99%

Recent advances on geomorphology of the Gorce Mountains, the Outer Western Carpathians – state-of-the-art and future perspectives

Kroh

Pawlik

2021

Geogr. Pol.

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The increase of geomorphological research during the last decades in the Gorce Mts. caused the need for state-of-art review papers. The Gorce Mountains were formed as an isolated massif with Mt Turbacz (1310 m a.s.l.) as the highest summit. River channels are remodeled by sudden and high-level floods with the critical impact of log jams. The main processes influencing hillslope relief were landsliding, run-off, and tree uprooting. The review suggests the following issues await for studies: a long-term landscape evolution, monitoring of morphogenetic processes, and origin of landslides with their contribution to denudation rates. Also, current biomorphodynamics (uprooting process) has not been sufficiently studied.

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Floods types in a mountain catchment: The Ochotnica River, Poland

Cited by 10 publications

References 37 publications

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

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

Human Impact on the Functioning of River Channels in the Polish Carpathians

Recent advances on geomorphology of the Gorce Mountains, the Outer Western Carpathians – state-of-the-art and future perspectives

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