Within the borders of the city of Cracow there are several water bodies that are important and valuable in ecological, aesthetic (landscape), economic and recreational aspect. One of them is the Bagry Reservoir, called Bagry Wielkie, situated in Płaszów, in the neighbourhood of the zone designed for industry, warehouses, transport (railway no. 91) and residential areas. Over the whole period of its existence and use, the water body was subdued to frequent geometric changes. Transformations resulted mainly from the demand of the neighbouring brickyards for clay, gravel and sand exploited for the needs of the development in the area of Płaszów, especially during Nazi occupation and the stage of the fi rst phase of the industrialization of socialist Poland (1950Poland ( -1970. The end of exploitation in 1972 and leaving the excavation without carrying out the process of remediation measures caused the return of ground waters to the state of hydro-geological (spontaneous liquidation of the depression funnel). The change in the level of the water table and a very complicated shoreline, typical in this type of post-exploitation water bodies, often cause the separation of the peripheral fragments of the water body from its main part. This limits the possibility of applying popular bathymetric sets, i.e. echo-sonars fi xed on manned boats, carrying out the process of acoustic probing in water areas. In 1999, the small water body located in the south-west part of the study area, was still an integral part of the Bagry. Nowadays it is separated from the main body with a narrow piece of land. Thus the supplementation of hydrographical documentation required the application of automatic measurement tools. The article presents the results of the application of hydro-drone Smart-Sonar-Boat in making a bathymetric map of this poorly accessible fragment of Bagry, making contribution to the cartographic documentation made by R. Gawałkiewicz (Gawałkiewicz R., 2017). ZALEW BAGRY -CZĘŚĆ 3. ZASTOSOWANIE HYDRODRONA SMART-SONAR-BOAT W POMIARACH BATYMETRYCZNYCH TRUDNODOSTĘPNEGO OBSZARU WODNEGOSłowa kluczowe: Zalew Bagry, pomiary hydrografi czne, zastosowanie hydrodronów Streszczenie W granicach miasta Krakowa zlokalizowanych jest kilka ważnych i wartościowych pod względem przyrodniczo-krajobrazowym, gospodarczym oraz rekreacyjnym akwenów wodnych. Jednym z nich jest Zalew Bagry zwany Bagrami Wielkimi, położony w Płaszowie, w sąsiedztwie strefy przemysłowej, magazynowej, komunikacyjnej (linii kolejowej nr 91) oraz mieszkalnej. W całym okresie jego istnienia i użytkowania, akwen ulegał częstym zmianom geometrycznym. Przeobrażenia wynikały głów- GEOINFORMATICA POLONICA 17: 2018

Providing a long durability of the historic salt mine of Bochnia demands proper observations, analyses and drawing conclusions based on them and leading to recognising and the assessment of a specific behaviour of the rock mass and the effectiveness of the protection from mining damage. The studies of the rock mass and surface deformation are carried out by the mine based on the results of the observations made with the methods of surveying. These observations include, among others, the measurements of the height of benchmarks stabilized on the surface and rock mass, the measurements of linear convergence (on the established vertical and horizontal bases in selected chambers of the mine); and since 2003 the attempts have been made to apply total stations and laser scanners to document the selected chambers. The article presents test studies on laser scanning carried out in the chapel of St. Kinga in the Bochnia Salt Mine in 2007 and 2013 (Fig. 1). They showed high accuracy of the scanning method both in the positioning of points of the salt excavation, in modelling, as well as calculation of the area of any cross-section (Fig. 2) and the volume of chambers of complicated shapes (Fig. 3). The carried out accuracy studies, analyses and comparisons were used in the calculation of the area convergence for the chapel of St. Kinga in the Bochnia Salt Mine. They make base for the calculation of volume do convergence in the near future.

The opencast extraction of aggregates (sand and gravel) affects the change in landscape, including the formation of anthropogenic water reservoirs. The research were conducted in selected open-pits mines in southern Poland. In the research, a remote-controlled bathymetric device, constructed by the author, was used. Firstly, the investigation aimed to check the method under strictly defined conditions in open-pit mines of aggregates. But, above all, the study cycle aimed to verify whether a remote-controlled bathymetry could successfully be helpful for protecting the aquatic environment. The following issues were discussed in the paper: ZASTOSOWANIE ZDALNEJ BATYMETRII JAKO WKŁAD DO OCHRONY ŚRODOWISKA WODNEGO W KOPALNIACH ODKRYWKOWYCH Słowa kluczowe: stateczność zboczy eksploatacyjnych, podwodna eksploatacja, roślinność denna, struktura dna zbiornika wodnego, rekultywacja, zarządzanie zasobami naturalnymi, bezpieczna eksploatacja Abstrakt Odkrywkowa eksploatacja kruszyw naturalnych (piasku i żwiru) niesie ze sobą zmiany w krajobrazie, przyczyniając się również do powstawania antropogenicznych zbiorników wodnych. Badania zostały przeprowadzone w wybranych kopalniach kruszyw GEOINFORMATICA POLONICA 18: 2019

Geomorphological and ecological examination of waterbodies facilitates effi cient action aimed at their correct management and attributing proper functions to them or their parts. For years there have been many concepts of the management of numerous post-mining water bodies in Cracow, within the Local Site Development Plan (Miejscowy Plan Zagospodarowania Przestrzennego). Within the borders of the city of Cracow there are several water bodies important and valuable in environmental, landscape, economic and recreational aspect. One of them is the Bagry Reservoir called Bagry Wielkie (the Great Bagry). Nowadays it consists of two parts separated with a dike: the bigger of the area 30.03 ha, fulfi lling the function of sports and recreation as well as economic function (Special Fishery "Wspólnota", managed by the Regional Board of the Polish Angling Association -Zarząd Okręgowego Polskiego Związku Wędkarskiego Z.O. PZW Kraków/Cracow) and the smaller one -0.57 ha, for many years being a breeding site of several protected species of birds and fi sh. The knowledge of the geometry of the water basin, characteristics of the bottom (type of the surface, mud) and location of water vegetation, makes base and component of reliable assessment of the state of water environment as well as making proper decisions in the area of the protection of natural resources or revitalization of the water body. This article presents the possibilities of measurement system Lowrence Mark-4, which, apart from hydrographical data, due to specialist algorithm of the interpretation of the return signal, provides numerical information on the hardness of the bottom and the thickness of the vegetation mass on its surface. Measurements made with the application of remote-controlled Smart-Sonar-Boat equipped with sonar Lowrence Mark-4 and GPS R8s Trimble provided important data giving basis to initial assessment of the condition and natural value of this diffi cult-to-access part of Bagry Reservoir. ZALEW BAGRY -CZĘŚĆ 4. ZASTOSOWANIE SONDY AKUSTYCZNEJ LOWRENCE MARK-4 W SZCZEGÓŁOWEJ INWENTARYZACJI TRUDNODOSTĘPNEGO OBSZARU WODNEGO Słowa kluczowe: Zalew Bagry, pomiary hydrografi czne, zastosowanie hydrodronów StreszczenieRozpoznanie geomorfologiczne oraz przyrodnicze akwenu pozwala na prowadzenie skutecznych działań zmierzających do właściwego zagospodarowania zbiornika lub jego części oraz przypisanie mu właściwej funkcji. Od lat w Krakowie istnieje szereg koncepcji zagospodarowania wielu akwenów pogórniczych w ramach Miejscowych Planów Zagospodarowania Przestrzennego. W granicach miasta Krakowa zlokalizowanych jest kilka ważnych i wartościowych pod względem przyrodniczo-krajo-DOI 10.4467/21995923GP.18.003.9160 brazowym, gospodarczym oraz rekreacyjnym akwenów wodnych. Jednym z nich jest Zalew Bagry zwany Bagrami Wielkimi. Obecnie składa się on z dwóch rozdzielonych wąską groblą części: większej o powierzchni 30,03 ha pełniącej funkcję rekreacyjno-sportową i gospodarczą (Łowisko Specjalne "Wspólnota" będące pod opieką Zarządu Okręgowego Polskiego Związku...