The Vrbas is a major river with a length of 250 kilometres (160 mi), in western Bosnia and Herzegovina. It is a right tributary of the Sava river. The city of Banja Luka is located on the river banks.
Kneževo, formerly Skender Vakuf, is a town and municipality located in Republika Srpska, Bosnia and Herzegovina. As of 2013, it has a population of 9,793 inhabitants.
Javorani, is a village in Kneževo municipality, near Banja Luka, Republika Srpska, Bosnia and Herzegovina.
Imljani is a village in Republika Srpska, which is located in the municipality of Kneževo. Since 1954, Imljani was one of local communities of Former Šiprage Municipality in Former Kotor Varoš County.
Ilomska is right tributary of the Ugar river in (Bosnia). It is about 20 kilometres (12 mi) in length, and its source is Vlašić Mountain. It is an essential body of water for surrounding wildlife. Ilomska flows between the Žežnička Greda and Javorak mountains. It has a curved flow around Lisina and Runjavica mountains, through coniferous and mixed spruce-beech woods.
The Vrbanja is a river in Central Bosnia, Bosnia and Herzegovina; with Ugar, the largest right tributary of the Vrbas. Its basin covers an area of approximately 703.5 km2. The Vrbanja has significant hydropower potential. There are many different estimations of the Vrbanja's length, from 70.5 km and 84 km to 95.4 km.
The Jakotina is a left tributary of the Vrbanja river. It rises on the north-eastern slopes of the mountains Čemernica in the area of Rađići village. This locality is above the regional road Banja Luka - Kneževo. The length of this river is about 20 kilometers. Along its course, in the 1970s there were at least 10 water-mills. Its mouth is in the Kotor Varoš, about 200 meters downstream from the old bazaar. After a watershed with the Cvrcka, and tributaries of Ugar, Jakotina has a relatively short and deep canyon. The canyon spreads to the mouth Grabačevac, its richest tributary. Near Kotor Varoš there is also one small and one large waterfall. Large waterfall is called "Bobas"; its height is about seven metres.
The Ćorkovac is an eastern confluent of the Vrbanja river in Bosnia. It begins on the north-eastern slopes of the Vlašić mountain's plateau, and the mouth opens at Šiprage, where the town's sawmill was. The spring of Ćorkovac is 1,150 metres above sea level, and is around 6 kilometres long. It flows between the Jasen and Stražbenica mountains to its estuary. The watermills were in operation until the 1960s.
The Ugar is a river of Bosnia, a tributary of the Vrbas river. It originates at the slopes of Vlašić, upstream of Sažići and Melina villages, a watershed area of Vrbanja, Ilomska and Bila rivers. The valley along the Ugar is known as Pougarje.
The Čudnić is a left, western tributary of the Vrbanja in Bosnia and Herzegovina. It flows to Panići village and empties into the village of Čudić in the village of Kruševo Brdo, below Arapov Brijeg. It springs on the southeastern slopes of the lower Vlašić's plateau, below the Ilomska and its tributaries. The spring is on a riverhead with the Kovačevića creek and the Ćorkovac creek. The tributary flows deep and fast; it is the local population's belief that the Čudnić is flowing over a part of the water of the Ilomska confluence.
The Cvrcka is a river which flows through Bosnia, and is the largest left bank tributary of the river Vrbanja.
Kruševo Brdo is a village in Bosnia and Herzegovina, Republika Srpska, municipality Kotor Varoš in geographical region Bosanska Krajina. It is administratively divided into Krševo Brdo I and II.
Baljvine is a village located in the municipality of Mrkonjić Grad in Bosnia and Herzegovina. It is in the administrative entity Republika Srpska. According to census estimates in 1991, the village population was 1,140. The population decreased from 973 to 437 people in 2013.
Petrovo field is a small field on Podvlašić plateau, as part of Vlašić mountain group, and it's positioned at an altitude of about 1140 meters to 1220 meters a.s.l.
Petrovo Polje is a village in Central Bosnia, Bosnia and Herzegovina, the Republika Srpska, Kneževo Municipality. Until the 1960s it belonged to the former municipality Šiprage, and then for some time and the municipality of Kotor Varoš. From ancient times to the fall of the Kingdom of Yugoslavia, the village belonged to the Church municipality Imljani.
Kobilja is a river in Central Bosnia, between Skender Vakuf and Imljani. It is a right bank tributary of the Ugar River.
Ugrić is the right tributary of the Ugar River in Central Bosnia. It is about 4 kilometres (2.5 mi) in length, and its source is on the slopes of the Bosnian mountain of Vlašić in the locality of Krčevine. It is an essential body of water for surrounding wildlife.
Mala Ilomska is very short right tributary of Ilomska – one of right tributaries of Ugar − in Central Bosnia, Bosnia and Herzegovina, Skender Vakuf Municipality. This small river is formed from seven springs and streams at the Petrovo field, on the southwestern slopes of the hill Omarike. The min source is at an altitude of about 1230 m, and one of the registered is Bijeljino spring, near the hamlet of Nikodinovići. In addition to these, there are no significant tributaries.
Ilomska Waterfalls are a set of waterfalls on the Ilomska river, right confluent of Ugar river in Central Bosnia. Both of these rivers rise from Vlašić Mountain massif.
Ćorkovići (Ћорковићи) is populated place in Bosnia and Herzegovina, Kotor Varoš Municipality in Republika Srpska. In 1991, in this village lived 175 inhabitants, and 2013. : 101.
