Spatial distribution of bottom sediment deposits in water reservoirs at Zesławice
Journal Title: Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation - Year 2009, Vol 41, Issue 1
Abstract
Spatial distributions of bottom sediment deposits in two small water reservoirs located on the River Dłubnia at Zesławice is presented in this paper. The distribution was elaborated according to Dendy`s method on the basis of results of silting measurements performed in the 2005. Horizontal and vertical distribution of sediment deposits was shown as relation between the relative volume of deposited sediments (Sh/S) and relative storage capacity of the reservoir (Vh/V); the vertical distribution of sediment deposits was presented as relation between the relative volume of deposited sediments (Sv/S) and relative reservoir depth (D/Dm). On the basis of performed analysis of horizontal distributions of sediment deposits it was stated that in the main reservoir at Zesławice 58% of the sediment trapped in the reservoir was accumulated in the inflow (upstream part of the reservoir, whose relative volume is 0.25). In the inflow section of the assistant reservoir of relative storage capacity equal 0.22 only 29% of the sediment was deposited. Comparing curves of horizontal sediment deposits distribution in the main reservoir in its inflow part according to measurement data from the 2005 and 1986 i.e. from a comparable period of operation before desilting and building of an assistant reservoir it was stated that relative volumes of sediment trapped after desilting are over 40% higher than before desilting. In a comparable period of operation before desilting (measurement in the 1983) and after desilting (measurements in the 2005) i.e. after seventeen and sixteen years respectively in the main reservoir the accumulated sediments formed an isle – the value Sv/S equaling 0.09 for D/Dm equal 0 in consequence of a change of hydraulic conditions of water and sediment flow – due to a part of inflowing water of the River Dłubnia being directed to the assistant reservoir.
Authors and Affiliations
Bogusław Michalec, Karol Pęczek, Mateusz Strutyński
Keywords
Related Articles
- EP ID EP154978
- DOI -
- Views 85
- Downloads 0
Modelling of discharge, nitrate and phosphate loads from the Reda catchment to the Puck Lagoon using SWAT
Sustainable management of water quantity and quality has recently become a major issue in the face of decreasing water resources and increasing water demand throughout the country (Kundzewicz et al. 2010). According to t...
Linkage of “Lakes Zwenkau-Cospuden” as one of the elements of land reclamation after the open-cast mines and its future importance for the development of the region
The open-cast mine “Böhlen”, closed in 1921, in 1969 was transformed into “Zwenkau”(“Zw”) open-cast mine. In the seventies, together with its smaller neighbouring mine “Cospuden”(“Cs”), became one of the greatest enterpr...
Vertical and horizontal permeability measurements in organic soils
The paper is referring to vertical and horizontal laboratory permeability measurements in soft organic soils. The estimation of anisotropic permeability in soft organic soils, as peats, requires to use a special apparatu...
Impact of the moisture content in medium sands on CPTU test results
Soils occurring in the soil “active zone” are in contact with the surface and are directly influenced by external factors (mainly climatic changes) that causa variation in their parameters over time. Dynamic and uncontro...
Evaluation of methods of comparative analysis of sums of atmospheric precipitation measured with the classical method and with a contact-less laser rain gauge
The paper concerns on the evaluation of a preliminary method of comparing data on diurnal sums of atmospheric precipitation acquired with the classic method and by means of Thies Clima laser precipitation monitor – disdr...