Title: Valea de Pești
Content:  The Valea de Pești is a right tributary of the river Jiul de Vest in Romania. It flows into the Jiul de Vest near Câmpu lui Neag. The Valea de Pești Dam is built on this river. Its length is 11 km and its basin size is 32 km2.
Title: Valea cu Pești
Content:  The Valea cu Pești is a left tributary of the river Argeș in Romania. It discharges into Lake Vidraru, which is drained by the Argeș. Its length is 10 km and its basin size is 23 km2.
Title: Valea Beliei
Content:  The Valea Beliei is a right tributary of the river Prahova in Romania. It discharges into the Prahova in Gura Beliei. Its length is 11 km and its basin size is 36 km2.
Title: Pleșcuța
Content:  Pleșcuța (Peleskefalva), a commune in Arad County, Romania, is situated in the Hălmagiu Basin, at the foot of Codru-Moma Mountains and Metaliferi Mountains, along the upper course of the Crișul Alb River. It is connected with the Gurahonț Basin by the epigenetic defile of the Crișul Alb existing between Pleșcuța and Gurahonț. The commune stretches over 7000 hectares and is composed of seven villages: Aciuța (Acsuca), Budești (Bugyfalva), Dumbrava (Körösdombró), Gura Văii (Vojkaháza), Pleșcuța (situated at 116 km from Arad), Rostoci (Rosztócs) and Tălagiu (Talács).
Title: Prahova (river)
Content: Left: Puriștoaca, Valea Popii, Olăreasa, Pârâul lui Vlad, Ursoaia Mare, Ursoaia Mică, Azuga, Valea Mărului (I), Valea Seacă (I), Valea Fetei, Valea Seacă (II), Valea Măturarului, Zamora, Șipa, Tufa, Valea Cășăriei (I), Valea Rea, Valea Câinelui, Gagu, Valea lui Bogdan, Valea la Nuci, Valea Mărului (II), Valea Surpăturii, Valea Orății, Conciu, Florei, Câmpea, Doftana, Viișoara, Teleajen, Vitman, Cricovul Sărat ; Right: Joița, Râșnoava, Pârâul Sec, Valea Brusturilor, Valea Stânei, Valea Grecului, Valea Fabricii, Valea Cerbului, Valea Albă, Paltinu, Valea Jepilor, Valea Seacă a Jepilor, Urlătoarea, Valea Babei, Piatra Arsă, Peleș, Valea Cășăriei (II), Valea Iancului, Zgarbura, Izvorul Dorului, Valea Largă, Dogăria, Valea Dracului, Valea Măgarului, Valea Seciului, Valea Obielei, Valea Mesteacănului, Valea Beliei, Viroaga, Poienari, Maia The following rivers are tributaries to the river Prahova (from source to mouth): 
Title: Valea Roșie (Mureș)
Content:  The Valea Roșie is a left tributary of the river Petriș in Romania. It flows into the Petriș in the village Petriș. Its length is 18 km and its basin size is 71 km2.
Title: Pleșa (Timiș)
Content:  The Pleșa is a right tributary of the river Timiș in Romania. It flows into the Timiș near Prisaca. Its length is 13 km and its basin size is 17 km2.
Title: Valea Racilor (Arieș)
Content:  The Valea Racilor is a small river in the Apuseni Mountains, Cluj County, western Romania. It is a left tributary of the river Arieș. It flows through the municipalities Feleacu, Tureni and Turda, and joins the Arieș in the town Turda. It is fed by several smaller streams, including the Fâneața Vacilor. Its length is 25 km and its basin size is 166 km2.
Title: Valea Roșie (Crișul Negru)
Content:  The Valea Roșie or Roșia (Rossia-patak or Remete-patak) is a river in Romania, Bihor County, right tributary of the Crișul Negru. Its length is 38 km and its basin size is 308 km2. The river starts at the Roșia karst spring in the Pădurea Craiului Mountains. It flows through the hills of the Beiuș Depression and joins the Crișul Negru near Pocola. The most important villages on the river are Roșia, Remetea and Pocola.
Title: Valea Iașului (river)
Content:  The Valea Iașului is a left tributary of the river Argeș in Romania. It flows into the Argeș in Curtea de Argeș. Its length is 12 km and its basin size is 34 km2.

Question: In what country is Valea Pleșii River?
Answer: Romania.
Roumania.
Rumania.
România.
ro.
🇷🇴.