Vizelj

Vizelj originates north of Padinska Skela, in the central part of the Pančevački Rit, a former marshland in the southwestern corner of the Banat region. It forms at the Livade locality, and first flows to the west, where in the Puškara region receives the Sefkerin canal from the right. At the Carske Šume locality, also from the right, it receives the Buk canal. The Buk connects Vizelj to Besni Fok, and the Kišvara canal in the west. From there, the Vizelj generally flows in the north-to-south direction, creating numerous curves and meanders. In this, upper course, it mostly follows the Zrenjanin Road, between the localities of Nove Livade, on the east, and Galina Greda and Zlobatska Bara, on the west.^[1][2][3]

It enters Padinska Skela at the Institute for Agriculture and Forestry, and flows between Skela's neighborhoods of Novo Naselje (on the right), and Tovilište and aviation complex Lisičji Jarak (on the left). Upon exiting Padinska Skela, at the PKB Corporation industrial complex, it receives the stream of Lisičji Potok from the left. From this point it meanders to the west, splitting from the road. It flows through Kovilovo, where it receives the Rasova canal from the right, and continues to the south through the Zbeg region. In this section, it is crossed by the Outer Northern Tangent [sr], which is in wider sense a northern section of the Belgrade bypass. Before reaching Borča, it forms a large meander, creating the Veliki Budžak locality.^[1][2][3]

The Vizelj continues to meander in the east–west direction, marking, for the most part, west and southwest border of the urbanized area of Borča, more specifically its neighborhoods of Mali Zbeg, Nova Borča (Centar 3) and Stara Borča. Irgot, section of Stara Borča, is fully situated in the joint meander of Vizelj and Mokri Sebeš, which flows from the left. The Vizelj continues to the south, where it receives the Veliki (Great) canal from the right. Borča expands in this section, and the area is being urbanized in the direction of Crvenka, outer and isolated neighborhood of Borča on the Danube's bank. The canal then crosses the embankment which protects the Pančevački Rit's inland from the Danube and turns to the southeast, parallel to the embankment.^[1][2][3]

In this, final section, the Vizelj makes an administrative border between the towns of Borča and Belgrade, or Belgrade's neighborhood of Krnjača. It also forms the eastern border of the ada Kožara, which is planned, with the surrounding area, as the future, much larger, artificial Čaplja island. This final section is also known as the Borčanski Dunavac, or, more commonly Jojkićev Dunavac, after Đurica Jojkić, former mayor of Belgrade. During his tenure, this section was channeled and widened in an effort to quicken the drainage of the Pančevački Rit. It empties into the Danube at its 1,168.5 km (726.1 mi). Weekend settlement Mika Alas is located at the confluence.^[1][2][3][4]

The length of the Vizelj, due to the channeling and artificial connections with the surrounding channels, has been reported as either 27 km (17 mi) or 31 km (19 mi). The average width of the stream is 50 m (160 ft) and is 1.5 to 2 m (4 ft 11 in to 6 ft 7 in) deep.^[5]

Jojkićev Dunavac, which makes the final section of the stream, is actually a 6 km (3.7 mi) long canal, cut in the 1950s to drain the soil. In Borča, there is a pumping station which transfers the water from this stream into the Mokri Sebeš.^[6] When dug in the 1950s, the canal was 70 metres (230 ft) wide. In time, due to the mud and silt deposits, in some sections it is narrowed to only 7 metres (23 ft).^[7]

During the normal and high water levels, smaller vessels can enter the channel, but during the low waters it is inaccessible.^[4] However, it is used for kayaking since 1972, when the first kayak club in Borča was founded.^[8]

Vizelj is name of the PKB Corporation's pig farm. Also, a new stadium of the FK BSK Borča, built in the vicinity of the river in 2009, is named Vizelj Park.

Initial works on the river were done in the second half of the 18th century, during the reign of the empress Maria Theresa, as the area was ruled by Austria at the time.^[5] In the mid-20th century, the Vizelj was navigable for smaller vessels. The navigable waterway was starting at Vrbovski, and continued until Reva, where it reached the Danube.^[9] In the early 1960s, with the digging of the Jojkićev Dunavac, the stream was cut short and got its present form. As the area became rapidly urbanized after the World War II, which was not followed by the adequate communal infrastructure, the Vizelj got more and more polluted.^[5]

It was partially cleaned in 2009. In 2012, sisters Nikolina Moldovan and Olivera Moldovan, who practiced on the Vizelj, petitioned to the mayor Dragan Đilas to do something about the worsening conditions of the river as it is important for the national sport. The city decided to financially support the cleaning, though that is not administratively under the city's jurisdiction. In August–September 2012, the stream was dredged, cleaned and the vegetation was cut.^[5] Yearly kayaking regattas have been organized since then. In 2014, the channel was cleaned again but by May 2015 it was again covered in vegetation and turned into the morass.^[10] The river was cleaned during the summer of 2015.^[11] Since then, locals and members of the kayaк clubs organized and regularly clean the stream, including the cleaning of the banks in April 2017.^[12]

In March 2019, the environmentalists described the Vizelj as "less of a watercourse, more of a sewage watershed".^[13] Some cleaning of the canal was conducted after the floods in 2019.^[9] In 2022, construction of the promenade along the Vizelj in Padinska Skela was announced.^[14]