Estimating sedimentation rates in small reservoirs - Suitable approaches for local municipalities in central Europe

Honek, David; Michalková, Monika Šulc; Smetanová, Anna; Sočuvka, Valentín; Velísková, Yvetta; Karásek, Petr; Konečná, Jana; Németová, Zuzana; Danáčová, Michaela

doi:10.1016/j.jenvman.2019.109958

Cited by 22 publications

(14 citation statements)

References 59 publications

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“…Je potřeba vzít v úvahu místo vzniku jednotlivých metodik, respektive klimatické oblasti, ve kterých daná metoda vznikla. Z tohoto důvodu se jako nejslibnější postup pro naše území jeví metoda WISCHMEIER A SMITH, jejíž uplatnitelnost byla potvrzena mnohými autory [1,42,43]. Tato metoda dobře reflektuje meziroční, ale i roční variabilitu rozložení srážek, umožňuje rovněž výpočet měsíční hodnoty R faktoru, což je vhodné pro krátkodobé studie (např.…”

Section: Popis Výzkumného úZemíunclassified

Alternativní stanovení faktoru R (erozní účinnost deště) v povodí Husího potoka

Caletka¹,

Honek²

2021

VTEI

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Section: Popis Výzkumného úZemíunclassified

Alternativní stanovení faktoru R (erozní účinnost deště) v povodí Husího potoka

Caletka¹,

Honek²

2021

VTEI

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“…This specific environment creates favourable conditions for generating flash floods from intense rainfall. Two major flash-flood events were recorded in summer 2009 and 2010 [72,73]. On 2 July 2009, the region experienced extreme rainfall (local precipitation reached up to 50 mm) after a very rainy period, causing a severe flood event with peak discharge of 33.1 m 3 /s and corresponding to a 50-year flood event.…”

Section: Study Areamentioning

confidence: 99%

“…More than half the area is arable land. Due to large fields, soil erosion poses an imminent threat to a little dam that was constructed right under the catchment's outlet to protect the areas downstream from flash floods [73].…”

Section: Suchý Creek Catchment (Ne)mentioning

confidence: 99%

Improvement of SCS-CN Initial Abstraction Coefficient in the Czech Republic: A Study of Five Catchments

Caletka

Michalková

Karásek

et al. 2020

Water

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The SCS-CN method is a globally known procedure used primarily for direct-runoff estimates. It also is integrated in many modelling applications. However, the method was developed in specific geographical conditions, often making its universal applicability problematic. This study aims to determine appropriate values of initial abstraction coefficients λ and curve numbers (CNs), based on measured data in five experimental catchments in the Czech Republic, well representing the physiographic conditions in Central Europe, to improve direct-runoff estimates. Captured rainfall-runoff events were split into calibration and validation datasets. The calibration dataset was analysed by applying three approaches: (1) Modifying λ, both discrete and interpolated, using the tabulated CN values; (2) event analysis based on accumulated rainfall depth at the moment runoff starts to form; and (3) model fitting, an iterative procedure, to search for a pair of λ, S (CN, respectively). To assess individual rainfall characteristics’ possible influence, a principal component analysis and cluster analysis were conducted. The results indicate that the CN method in its traditional arrangement is not very applicable in the five experimental catchments and demands corresponding modifications to determine λ and CN (or S, respectively). Both λ and CN should be viewed as flexible, catchment-dependent (regional) parameters, rather than fixed values. The acquired findings show the need for a systematic yet site-specific revision of the traditional CN method, which may help to improve the accuracy of CN-based rainfall-runoff modelling.

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“…Young et al [20] investigated the effect of soil organic carbon (SOC) redistribution on soil productivity and crop yield in agricultural fields in the Midwest of the US. Additionally, Honek et al [21] used USPED to simulate siltation and predicted the lifespan of a small reservoir.…”

Section: Introductionmentioning

confidence: 99%

Soil Erosion and Deposition in a Taiwanese Watershed Using USPED

2022

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Soil erosion is a global problem that has been exacerbated in recent decades by global warming and the increased frequency of extreme weather events. It is also a global issue addressed by the United Nations’ Sustainable Development Goal #15 that seeks to recover degraded land and create a world free of land degradation by 2030. In this study, we used the Unit Stream Power-based Erosion Deposition (USPED) model to investigate the distribution of soil erosion and deposition in an important reservoir watershed in Taiwan, which is known to have a high risk of sediment hazard. We found the average soil erosion rate to be 136.4 Mg/ha/year using the model’s recommended m = 1.3 and n = 1.2 empirical coefficients for a combined occurrence of sheet and rill erosion. Additionally, we selected the Sule sub-watershed and the Kala area as examples to illustrate the pattern of soil erosion and deposition and their relationship to rivers, roadways, and anthropogenic activity, and 3D terrain was employed to further enhance visualization of the model output. It was estimated that 12.6% of eroded soil was deposited with a 200 m buffer of the rivers in the watershed and might be swept into the river system by the next typhoon, torrential rain, landslide, or earthquake. In comparison to previous USLE- and RUSLE-based soil erosion modeling in the same research area, our USPED modeling is unique in that it included the amount and distribution of soil deposition. This successful implementation of USPED in Taiwan establishes a new modeling alternative in addition to the widely used USLE and RUSLE models. The findings can be used to direct future erosion pin placement in the research area, allowing for improved monitoring of sediment movement and avoiding sediment hazards.

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Estimating sedimentation rates in small reservoirs - Suitable approaches for local municipalities in central Europe

Cited by 22 publications

References 59 publications

Alternativní stanovení faktoru R (erozní účinnost deště) v povodí Husího potoka

Alternativní stanovení faktoru R (erozní účinnost deště) v povodí Husího potoka

Improvement of SCS-CN Initial Abstraction Coefficient in the Czech Republic: A Study of Five Catchments

Soil Erosion and Deposition in a Taiwanese Watershed Using USPED

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