Water Resources in Pleven Region Pleven is located in an agricultural region in the very heart of the Danubian Plain, the historical region of Moesia, surrounded by low limestone hills, the Pleven Heights. The city's central location in Northern Bulgaria defines its importance as a big administrative, economic, political, cultural and transport centre. Pleven Water Ponds and dams in Kaylaka park. The fountains in the centre of Pleven Rivers in Pleven Region -The Vit River The Vit is a river in central northern Bulgaria with a length of 189 km. It is a tributary of Danube. The source of the Vit is in Stara Planina /the Balkan Mountains/. The water from this river is used mainly for agriculture. The river Vit flows near the town And one of its tributaries the tiny Tuchenitsa river (commonly known in Pleven as Barata, literally "The Streamlet") crosses it. -The Iskar River The Iskar is, with a length of 368 km, the longest river that runs solely in Bulgaria, and a tributary of the Danube. After descending from the north slopes of Rila, it fills the Iskar Reservoir—the largest in Bulgaria and the Lake Pancharevo. This is the main source of water for Sofiyska Voda, the water and sewarage company in Sofia. - - The Zlatna Panega River Zlatna Panega ("golden Panega") is a river in central northern Bulgaria, originating from a karst source at the village of Zlatna Panega, Yablanitsa municipality, Lovech Province and it’s a tributary of Iskar river. Zlatna Panega's source is the largest Karst source in Bulgaria and the water temperature is relatively constant throughout the year. It is also very popular among Bulgaria's fishing community, as it is a great place to fish brown trout (with specimen over 1.5 kilograms), rainbow trout (some over 4 kilograms), chub, mountain barbel and even ide and perch. - The Osam River The Òsam is a river in northern Bulgaria. Its drainage basin is in between that of the river Vit to the west and the Yantra system to the east.[1]The river has two main tributaries in its upper course: the Black Osam takes its source from the foot of Levski Peak in the Balkan Mountains, at an altitude of 1,821 m (5,974 ft), while the White Osam has its source on the northern slopes of the Kozya Stena peak. In Troyan, the black and white Osam join. It runs north towards Lovech, then north-east until Letnitsa and Levski, where it turns north-west until it flows into the river Danube 5 km west of the town of Nikopol. The ancient name of the river was Assamus. - The Danube River The Danube Today, as "Corridor VII" of the European Union, the Danube is an important transport route. Since the opening of the Rhine–Main– Danube Canal, the river connects the Port of Rotterdam and the industrial centres of Western Europe with the Black Sea and, also, through the Danube – Black Sea Canal, with the Port of Constanța. Along its course, the Danube is a source of drinking water for about 20 million people. In Baden-Württemberg, Germany, almost 30 percent (as of 2004) of the water for the area between Stuttgart, Bad Mergentheim, Aalen and Alb-Donau (district) comes from purified water of the Danube. But unfortunately not in Bulgaria, because as the Danube flows towards the Black Sea conditions in its waters change considerably. From the upper to the lower reaches of the Danube scientists have monitored significant overall increases in the following determinands: suspended solids organic pollution organochlorine pesticides concentrations of heavy metals concentrations of nitrite and ammonium (however, the concentration of nitrate decreases) phosphorus conductivity (caused by dissolved salts) alkalinity .