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1 2012

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Prediction of sediment inflow to the Klusov-Hervartov reservoir

Junáková N., Bálintová M.

Zeszyty Naukowe Politechniki Rzeszowskiej. Budownictwo i Inżynieria Środowiska

2012

z. 59, nr 1/I

81-89

Sediment transport through water erosion is an environmental problem, having widespread and serious negative impact on agricultural production and mainly on water quality. Sediments reduce the stream capacity, reservoir’s accumulation capacity and act as the ultimate sink of many pollutants (nutrients, heavy metals, pesticides). For assessment the water management and environmental impact of sediments on water quality, first, it is necessary to determine the total amount of sediments deposited in reservoirs, often originated from erosion of agricultural production areas. This paper deals with the method for determination of the sediment quantity in the small water basin Klusov-Hervartov, which is based on combining the soil loss calculation using the Universal Soil Loss Equation and sediment delivery ratio. The calculation is supplemented with the determining of the detached sediment amount during 5 cropping periods in the year depending on land use in the river catchment’s area. Total quantity of sediments trapped in reservoir is determined according to the reservoir trapping efficiency by using Brune and Dendy method. Soil loss is computed based on the particular croprotations in the catchment during 10 years.