Janów-Nikiszowiec () is a district of Katowice, located in the eastern part of the city, within the group of eastern districts, along the river. It encompasses a significant portion of the former (excluding Giszowiec), comprising: , , Nikiszowiec, (southern part), and the housing estate, and in the past also the and .
Since its foundation in the 18th century until the Industrial Revolution, Janów was associated with the , and later with the . In the first half of the 19th century, industrial development began in the present-day district, accompanied by the establishment of new company-owned colonies, including Amanda and (near the coal mines) and Arnold (near the zinc smelter). From the second half of the 19th century, Janów-Nikiszowiec was closely associated with the concern, company, which in 1883 merged numerous small mines into one larger one – Giesche Coal Mine (now ). Along with its development, a new housing estate for the mine workers – Nikiszowiec – was built between 1908 and 1919, and after World War II, Kolonia Wysockiego. On 9 May 1924, Nikiszowiec was incorporated into Gmina Janów. In 1951, the gmina was merged with Szopienice, and on 31 December 1959 with Katowice.
The district has a diverse functional and spatial structure, dominated by residential and industrial uses, but also with a well-developed service and tourism sector (mainly in Nikiszowiec). The northern and southern boundaries of the district are marked by two major roads – national road 79 () and the A4 motorway. Several important Katowice roads also run through Janów-Nikiszowiec, including and streets. The district has an area of 8.65 km² (5.25% of Katowice's area) and had 11,496 residents in 2007 (3.6% of the city's population).
Geography Location Administratively, Janów-Nikiszowiec is located in the Silesian Voivodeship and is one of the districts of Katowice (no. 16), situated in the eastern part of the city, approximately 7 km east of the city center. It borders Zawodzie and Szopienice-Burowiec to the north, the city of Mysłowice (the districts of and ) to the east, Giszowiec to the south, and the district of Osiedle Paderewskiego-Muchowiec to the west. The district's boundaries are: to the north – along Kolonia Amandy and Porcelanowa streets, then along the southbound lane of (national road 79) from the intersection with and streets to the intersection with Krakowska Street, and then along that street to the city limits; to the east – along the border between Katowice and Mysłowice near the river; to the south – along and then, from the intersection with the A4 motorway, along that road to the Murckowska junction; to the west – along Gospodarcza Street and the eastern boundary of the municipal cemetery.
A large part of Janów-Nikiszowiec is located in the Bolina river valley, mainly on its left bank. According to physio-geographical regionalization, Janów-Nikiszowiec is located in the mesoregion, which forms the southern part of the Silesian Upland macroregion. The Silesian Upland itself is a part of the subprovince. Historically, the district forms part of eastern Upper Silesia.
Geology In terms of geological structure, Janów-Nikiszowiec is located in the . The strata filling the sinkhole date from the Upper Carboniferous period and consist of shales, sandstones, and conglomerates with seams of bituminous coal that formed over 300 million years ago. The age of the rock outcrops in Janów-Nikiszowiec is closely linked to the terrain. The Carboniferous rock outcrops, located in the highest parts of Janów-Nikiszowiec, consist mainly of claystones, mudstones, and coal from the Załęże and Orzesze formations; additionally, near Bagienna Street, there are sandstones, conglomerates, and coal from the Siodło formations. South of the areas built on Carboniferous rocks, mainly in the center of Nikiszowiec and Janów, as well as in the area of and , there are Quaternary formations from the Pleistocene – eluvial deposits of tills. Areas north of Janów consist of fluvioglacial sands and gravels formed during the Riss glaciation in the Neopleistocene. Formations from the same period are also found in the Bolina river valley – postglacial Pleistocene deposits in the form of fluvisols, silts, sands, and river gravels.
Terrain
In terms of physical-geographical units, Janów-Nikiszowiec is located in the subprovince, within the Silesian Upland, in the southern part of the mesoregion, while in terms of morphological units, the district is situated mainly on the Murcki Plateau. The northern slopes, descending toward the Rawa Depression, are dissected by two long valleys, including the flowing through Janów-Nikiszowiec and, in the western parts of the district, the valley of the . There are large areas of Tertiary denudational flattenings located at elevations above 300 m above sea level. In the district, near Stawiska and Krakowska streets, there is also a section of the Mysłowice Basin. In the area where Janów-Nikiszowiec borders Szopienice-Burówiec and Zawodzie lies the boundary between the Murcki Plateau and the Mysłowice Basin – both part of the Katowice Plateau – and the Rawa Depression, which is part of the Bytom Plateau. The highest point in Janów-Nikiszowiec is , located in the area of Gospodarcza Street. It reaches an elevation of 305.7 m above sea level. The lowest point, however, is located in the Bolina valley near the border with Mysłowice, at an elevation of approximately 253 m above sea level.
The landscape of Janów-Nikiszowiec has undergone significant changes as a result of human economic activity, mainly due to the extraction of raw materials, industrial development, and the construction of transportation infrastructure. In Janów, there are, among other things, former mining dumps, located mostly near the former Amanda Colony, as well as subsidence processes, which have resulted in the formation of, among other things, artificial ponds and water pools in the depressions, including the pool located north of and .
Soils Janów-Nikiszowiec is an area with diverse soil types. The northern part of the district has been heavily impacted by human activity, and as a result, the soils in that area are classified as anthrosols. They are mainly composed of sandstone and sand. These soils are often degraded due to industrial activity and altered as a result of construction development. They are also contaminated with heavy metals. In the higher elevations of Janów-Nikiszowiec, where Carboniferous rock outcrops are present, luvisols have formed. Soils of the same type, but formed from alluvial clays as well as silty and clayey sands, have developed in the lower-lying parts of Janów-Nikiszowiec (mainly in the residential areas of Nikiszowiec and Janów). In the Bolina area, luvisols and brown earth formed from clayey sands have developed. Their pH is mostly acidic or close to neutral. In terms of soil quality classes, the soils in the district are classified as good and average (class III – the Mrówcza Górka area, and class IV – the Nowy Nikiszowiec and Janów areas along the Bolina valley).
Climate The climate of Janów-Nikiszowiec does not differ significantly from that of Katowice as a whole, but it is modified by local factors (microclimate). The area has a transitional temperate climate, with oceanic influences predominating over continental ones. Westerly winds dominate (accounting for about 60% of the total), with easterly and southerly winds accounting for a smaller share. The average annual temperature for the 1961–2005 period at the nearby station in is 8.1°C, though the urban heat island effect is also noticeable there, which locally modifies the air temperature. The warmest month is July (17.8°C), and the coldest is January (−2.2°C). The average annual sunshine duration for the 1966–2005 period was 1,474 hours. The average annual precipitation for the 1951–2005 period was 713.8 mm.
Surface and groundwater
Most of Janów-Nikiszowiec lies within the catchment of the , which is part of the Vistula drainage basin. Within the district, the Bolina flows northeast and joins the Czarna Przemsza further on in Mysłowice. In terms of water quality, the Bolina river at its confluence with the Czarna Przemsza was classified as Class V in 2006, which represents the lowest water quality class, rendering the water unsuitable for use. The northern part of the district around Porcelanowa Street, the northern slope of , part of , and the vicinity of is located in the catchment of the Rawa. A third-order drainage divide runs between the two catchments.
Most of the man-made water bodies are located in the Bolina valley. One pond is located in the Rawa valley, and there are also water bodies in closed basins. The following water bodies are found there: Name Area (ha) Catchment 2.75 Bolina 4.21 Bolina 2.13 closed drainage area Stawiska, ponds nos. 19.B–D 0.90 Bolina Stawiska, ponds nos. 19.A and 19.E 0.70 Bolina 0.92 closed drainage area 5.52 Rawa
Janów-Nikiszowiec is located within the Silesian-Kraków hydrogeological region. Aquifers are present there in all stratigraphic layers, but their significance depends on geological and hydrogeological factors, as well as human influence. None of the major groundwater reservoirs are found there; instead, the district is covered by groundwater body No. 134. The groundwater balance is significantly influenced by mining activities related to mine dewatering.
Nature and environmental protection
Janów-Nikiszowiec is characterized by a significant proportion of green space. The southwestern part of the district was once part of the former . The Murcki Plateau was originally covered mainly by beech forests and oak-hornbeam forests. River valleys were overgrown with riparian forests. These areas began to undergo transformation with the development of heavy industry in the early 20th century, mainly in the northern regions. Along with the expansion of human activity, changes also occurred in the environment, including the terrain (spoil tips and sinkholes), the hydrological network (e.g., the canalization of rivers and the creation of artificial reservoirs), and the flora and fauna. Some large animals have disappeared from the area (only red deer and wild boars remain), while new species associated with open terrain have appeared. Additionally, non-native plant and animal species have been introduced, some deliberately (mainly fish, bred especially in the Upadowy Pond).
The forests in Janów-Nikiszowiec are managed by the State Forests and administered by the Katowice Forest District's Janów Forestry Division. Its headquarters are located at 95 Leśnego Potoku Street. These forests are concentrated mainly in the northern, western, and southern parts of the district. In the forest stand stretching along the Bolina valley, the dominant species is Scotch pine, though oaks also grow there. Closer to Nikiszowiec, there are alder carrs, as well as ash trees and beeches. In the northern and western parts of the district, the dominant species is silver birch, while in the area of the former Amanda Colony, it is larch, elderberry, aspen, and alder buckthorn.
There are no designated nature conservation areas or natural monuments in Janów-Nikiszowiec. The following landscaped green spaces are found there: – a park located on Leśnego Potoku Street, along the Bolina river and next to Bolina Pond. It was established in the 1950s as a recreational area for miners from the Wieczorek Coal Mine and their families; – a square located in the Nikiszowiec housing estate. It commemorates Emil and Georg Zillmann, the architects of this estate.
The allotment gardens in Janów-Nikiszowiec are administered by the Silesian Regional Board of the Polish Allotment Gardeners' Association, Katowice Branch: