Abstract
Hydrological investigations require the development of a geodatabase allowing for the calculation of physiographic catchment parameters, as well as the analysis of amounts of water resources and changes therein. Such a geodatabase usually consists of meteorological, hydrological and cartographic data. The present study offers a review of datasets that may be used for geodatabase development in the interests of hydrological research, in catchments located in the Polish-Ukrainian borderland. The catchment of the Wiar River – selected to serve as a case study – is in fact divided by the state border into two equal sub-catchments (395.5 km2 in Poland and 398.9 km2 in Ukraine).The results reveal disparities in the spatial distribution of stream and meteorological gauges. For the Polish part of the catchment datasets include many parameters (in accordance with EU Directive and Regulations) and the results from monitoring are available online as yearly reports. For the Ukrainian part, only chemical components are monitored, and these data are not made available publicly. Consistent data sets such as DEM can be obtained from globally available ASTER and SRTM models. Datasets, such as LiDAR, which are important for medium and large-scale analyses allowing for the development of high-resolution DEMs, do not exist. Use of TanDEM-X data is restricted for the Ukrainian territory. However, comparison between the SRTM and LiDAR models (for the Polish part) revealed that the SRTM model may be optimised to serve the whole area. Land-use and land-cover data (LULC) are important in many hydrological analyses. the authors propose using satellite images in the development of a comparable layer describing land cover of the whole catchment.
Highlights
Hydrological investigations require the development of a geodatabase allowing for the calculation of physiographic catchment parameters, as well as the analysis of amounts of water resources and changes therein
The present study offers a review of datasets that may be used for geodatabase development in the interests of hydrological research, in catchments located in the Polish-Ukrainian borderland
The catchment of the Wiar River – selected to serve as a case study – is divided by the state border into two equal sub-catchments (395.5 km[2] in Poland and 398.9 km[2] in Ukraine)
Summary
Jako studium przypadku wybrano zlewnię rzeki Wiar (794 km2), przez którą przebiega granica państwowa i dzieli ją na dwie podobnej wielkości części. Po stronie polskiej znajduje się zachodnia część o powierzchni 395 km[2]. Po stronie ukraińskiej położona jest część wschodnia o powierzchni 399 km[2]. Średnie nachylenie zlewni wynosi 5,5° i jest ono nieco większe po stronie polskiej. Sieć rzeczna po obu stronach granicy ma nieco inny układ, co jest konsekwencją budowy geologicznej i rzeźby terenu Jej gęstość wynosi 2,5 km.km-2 w części polskiej i 1,4 km.km-2 po stronie ukraińskiej Która jest położona po stronie polskiej, jest w znacznej mierze zalesiona (powyżej 50%). Po stronie ukraińskiej zlewnia jest silnie wylesiona (lasy zajmują około 25% powierzchni), a znaczną jej część stanowią użytki rolne Na terenie zlewni znajduje się 89 wsi (z czego 40 po stronie polskiej) i 2 miasta: wspomniany Przemyśl oraz Dobromil po stronie ukraińskiej. Charakterystyka zlewni rzeki Wiar w podziale na część polską i ukraińską Features of the Polish and Ukrainian parts of the Wiar catchment
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