Rijeka Drina

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Površina sliva rijeke Drine iznosi 7.240 km2. Dužina je 346 km, a proticaj – 21 m3/sec. Nastaje kod Šćepan Polja na granici BiH i Crne Gore, od dviju rijeka Pive i Tare. Dolina je kompozitna, sa dugim i dubokim klisurama i kanjonima. Glavne pritoke su: Sutjeska, Ćehotina, Lim, Prača, Drinjača, Janja…Hidroelektrane: Višegrad, Peručac i Zvornik.

Drina

 The area of the Drina river basin is 7.240 square meters. It is 346 km long and the flow rate is 21 cubic meters per second.  

The Drina originates between the slopes of the Maglić and Pivska planina mountains, between the villages of Šćepan Polje (in Montenegro) and Hum (Bosnia and Herzegovina). Originally flowing to the west, it makes a large curve to the northeast, around the Maluša mountains. Next, it flows through the villages of Kosman, Prijedjel, Dučeli, Čelikovo Polje, Kopilovi, Trbušće, Brod and the town of Foča. It receives the Sutjeska, Bjelava and Bistrica rivers from the left and the Ćehotina at Foča from the right.

Here the Drina carved the longest one of the several gorges on its course, the 45 kilometer-long Suhi Dol-Biserovina gorge between the southernmost slopes of the Jahorina mountains from the north and the Kovač mountains from the south. The villages of Zlatari, Jošanica, Ustikolina, Cvilin, Zebina Šuma, Osanica, Kolovarice, Vranići, Mravinjac, Biljin, Vitkovići and Zupčići are located in the gorge, as well as the town of Goražde. The river receives the Kolunska rijeka and the Osanica as tributaries from the left.

The Drina continues to the northeast, flowing close to the villages of Žuželo, Odžak, Kopači and Ustiprača, entering the 26 km long Međeđa gorge carved between the Vučevica mountains from the south and the southern slopes of the Devetak mountains from the north. The narrowest part of the Međeđa gorge is Tijesno, the 8 kilometer-long section of the gorge where the river is at its narrowest (only 12 meters wide), but also at its deepest (12 meters). Here it receives the Prača river from the left and the Janjina and Lim rivers from the right. The villages of Trbosilje, Međeđa and Orahovci are located in the gorge, which is for the most part flooded by the artificial Višegrad lake, created by the Višegrad hydro electric power plant.

At the town of Višegrad, the Drina receives the Rzav river from the right and turns northwest at the Suva Gora mountain into the Klotijevac gorge. The gorge is 38 kilometers long and up to 1 kilometer deep, carved between the mountains of Bokšanica (from the west) and Zvijezda (from the east). The villages of Sase, Resnik, Đurevići and Gornje Štitarevo lie in the gorge and the Kukal river flows into the Drina from the right. At the Slap village, the Drina receives the Žepa river from the right and turns sharply to the west, becoming a border river between Bosnia and Herzegovina and Serbia near the village of Jagoštica.

 Border river

 The Drina flows between the mountains of Zvijezda and Sušica and it is flooded by the artificial Lake Perućac on the northern slopes of the Tara mountain, created by the Bajina Bašta power plant. The villages of Prohići and Osatica (in Bosnia and Herzegovina) are located on the lake, as well as the ruins of the medieval town of Đurđevac. The river is dammed at the village of Perućac, where a strong well springs out from the Tara mountain, flowing into the Drina as a waterfall. In addition, the waters of Drina are used for several fish ponds for the California trout spawning.

The river continues to the villages of Peći, Dobrak, Skelani (in Bosnia and Herzegovina) and Zaguline (in Serbia), reaching the town of Bajina Bašta. At the villages of Donja Crvica and Rogačica, the Drina makes a large turn, completely changing its direction from the northeast to the northwest. This distinct geographical feature forms the Osat and Ludmer regions of Bosnia and Herzegovina, which are separated by the river from the Azbukovica part of the Podrinje region of Serbia.

 Upper Podrinje

 Flowing on the western slopes of the Bukovica mountain, the Drina passes next to the villages of Gvozdac, Okletac, Strmovo, Bačevci, Donje Košlje, Drlače, Vrhpolje, Donja Bukovica (in Serbia), Boljevići, Fakovići, Tegare, Sikirići and Voljevica (in Bosnia and Herzegovina), before it reaches the towns of Ljubovija in Serbia, the center of the Azbukovica (or Upper Podrinje) region, and Bratunac, in Bosnia and Herzegovina, the center of the Ludmer region. Here the Drina receives the right tributary of Ljuboviđa and continues between the mountains of Jagodnja and Boranja (in Serbia), and Glogova (in Bosnia and Herzegovina). After the ruins of the medieval town of Mikuljak and the villages of Mičići, Uzovnica, Crnča, Voljevci (in Serbia), Krasanovići, Dubravice, Polom and Zelinje (in Bosnia and Herzegovina), the Drina is flooded again, this time by the artificial Lake Zvornik, as a result of the Zvornik power plant. The villages of Amajic, Culine (in Serbia), Sopotnik, Drinjača and Djevanje (in Bosnia and Herzegovina) are located on the lake. This is also where the Drinjača river flows into the Drina (now the Zvornik lake) from the left, flowing from the Bosnian region of Gornji Birač.

 Lower Podrinje

 After the dual town of Zvornik (Bosnia and Herzegovina)-Mali Zvornik (Serbia), the Drina flows between the Bosnian mountain of Majevica and the Serbian mountain of Gučevo, and enters the Lower Podrinje region. For the rest of its flow after the village of Kozluk, it has no major settlements on the Bosnian side (except for the town of Janja, which is several kilometers away from the river, and some smaller settlements, like Branjevo and Glavičice). On the Serbian side, the Drina passes next to the villages of Brasina and Rečane, the ruins of the medieval town of Koviljkin Grad, the spa and town of Banja Koviljača, the industrial town and center of the Podrinje region, Loznica, and its largest suburb, Lozničko Polje.

 Lowest section

 The Drina enters the lowest section of its course, the southern Pannonian plain, including the Serbian regions of Jadar (where it receives the Jadar river) and Iverak (where it receives the Lešnica). This is where the rivers spills in many arms and flows, creating the largest flood plain in former Yugoslavia, which the river divides in half. The east side, Mačva, is in Serbia, and the west side, Semberija, in Bosnia and Herzegovina (where it receives the Janja river). The Drina spills over and meanders, forming shallows, islands and sandbars, before emptying into the Sava river between the Serbian village of Crna Bara and the Bosnian Bosanska Rača. The variability of the water flow and low altitude resulted in several course changes during history. The Drina previously flowed into the Sava river near Šabac, 30 kilometers to the east of the present mouth.

 Characteristics

 Like the Velika Morava, the Drina is also a meandering river, with a very high meandering ratio (175:346), still slightly less than that of Velika Morava.

The Drina is a very fast river with cold and greenish water due to the limestone which constitutes a major part of the area in which the river carved its bed.

Its average depth is 3 to 5 meters, the deepest being 12 meters at Tijesno. On average, the Drina is 50-60 meters wide, but it ranges from only 12-20 meters at Tijesno to up to 200 meters at Bajina Bašta and Ljubovija.

The drainage basin covers 19,570 square kilometers, branching into Bosnia and Herzegovina, Serbia, Montenegro, and Albania. The Drina belongs to the Black Sea drainage basin.

Before it was regulated by the several power stations, the Drina used to flood its valley. The most disastrous flood occurred in 1896, which destroyed the town of Ljubovija.

 Tributaries

 Major left tributaries: Sutjeska (at Kosman), Bjelava (at Trbušće), Bistrica (at Brod), Kolunska rijeka (at Ustikolina), Osanica (at Osanica), Prača (at Ustiprača), Žepa (at Slap), Drinjača (at Drinjača), Kamenica (at Djevanje), Sapna (at Karakaja) and Janja (at Janja).

Major right tributaries: Ćehotina (at Foča), Janjina (at Samobor), Lim (the longest one, 220 km, at Brodar), Rzav (at Višegrad), Kukal (at Đurevići), Rogačica (at Rogačica), Trešnjica (south of Ljubovija), Ljuboviđa (at Ljubovija), Jadar (at Straža) and Lešnica (at Lešnica).

 Power

 The Drina originates at an altitude of 432 meters and flows into the Sava at 75 meters. The large inclination of 357 meters is not constant because of many gorges and bends, but still more than enough to generate an estimated 6 billion kilowatt-hours of potential electrical power.

Also, the discharge steadily grows: 125 cubic meters per second at the Ćehotina's mouth, 183 subic meters per second at the Lim's mouth, 328 cubic meters per second at the Drinjača's mouth, and finally 370 cubic meters per second on the Drina's mouth into the Sava.

However, power capacity is not fully used as only three hydro electrical power stations (HE) were constructed so far: HE Zvornik, HE Bajina Bašta, and HE Višegrad.

 Settlements

 As a result of the inhospitable terrain and the lack of good railways and major roads, the surrounding territory is sparsely populated. Apart from many small villages, the major settlements on or near the river are:

in Bosnia and Herzegovina: Foča, Goražde, Višegrad, Bratunac, Zvornik, and Janja.

in Serbia: Ljubovija, Mali Zvornik, Banja Koviljača, Loznica, Lozničko Polje, and Badovinci.

The Drina is crossed by several bridges: at Višegrad, Skelani, Bratunac and Zvornik (in Bosnia and Herzegovina), and Loznica and Badovinci in Serbia. The most recent bridge is the one at Badovinci, the Pavlovića ćuprija.

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