| Title | A GIS based approach for the mitigation of surface runoff to a shallow lowland reservoir |
|---|---|
| ID_Doc | 15623 |
| Authors | Dabrowska, J; Dabek, PB; Lejcus, I |
| Title | A GIS based approach for the mitigation of surface runoff to a shallow lowland reservoir |
| Year | 2018 |
| Published | Ecohydrology & Hydrobiology, 18, 4 |
| Abstract | Shallow lowland reservoirs situated in agricultural areas are especially prone to eutrophication. For the purpose of protection of such water bodies it is essential to determine not only sources and loads of pollution, but also nutrient pathways from the catchment to the reservoir. The aim of the undertaken research was to establish surface runoff transport pathways from the direct catchment through the shore zone to the retained water. The influence of land use pattern and its management on the directions of flow and accumulation of the surface runoff was analysed. The research was conducted for the Goluchow Reservoir (N: 51 degrees 50'37 '', E: 17 degrees 56'09 ''), situated in the central-western part of Poland. From the generated digital terrain model (DTM) with the resolution of 1.0 m, terrain slopes were established and surface runoff transport pathways designated. In the direct catchment of 980 ha four surface runoff areas were delineated (from 29 to 468 ha), from which pollution flows in a concentrated manner to the reservoir through indicated delivery points. Moreover, two areas of 69 and 50 ha were identified, wherefrom unconcentrated surface runoff reaches the water body along the shoreline (1750 m and 2130 m long). Thus, the hotspots for pollution were identified. The high resolution digital terrain model (DTM) for detection of micro-topographic features proved to be especially useful in lowland catchments for identification and analysis of surface runoff transport pathways, as well as for effective planning, development and management of mitigation measures such as riparian buffers, constructed wetlands, agricultural BMPs, or other erosion control techniques (including forest roads). (C) 2018 European Regional Centre for Ecohydrology of the Polish Academy of Sciences. Published by Elsevier B.V. All rights reserved. |
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