Question: What river does the system containing Umchabezi River serve as the mouth of?

title: Darling Mills Creek
text: The Darling Mills Creek, an urban watercourse that is part of the Parramatta River catchment, is located in Greater Western Sydney, New South Wales, Australia.

title: Coxs Creek (Belfield, New South Wales)
text: Coxs Creek, a watercourse of the Cooks River catchment, is located in the Inner West of Sydney, in New South Wales, Australia.

title: Cabramatta Creek
text: Cabramatta Creek, an urban watercourse of the Georges River catchment, is located in the south-western region of Sydney, in New South Wales, Australia.

title: Bardwell Creek
text: Bardwell Creek, an urban watercourse of the Cooks River catchment, is located in the southern suburbs of Sydney, in New South Wales, Australia.

title: Toongabbie Creek
text: Toongabbie Creek, an urban watercourse that is part of the Parramatta River catchment, is located in Greater Western Sydney, New South Wales, Australia.

title: Cup and Saucer Creek
text: Cup and Saucer Creek, an urban watercourse of the Cooks River catchment, is located in the Canterbury-Bankstown region of Sydney, in New South Wales, Australia.

title: Wolli Creek
text: Wolli Creek () is an urban watercourse of the Cooks River catchment located in the southern suburbs of Sydney, in New South Wales, Australia.

title: Little River (Wingecarribee)
text: The Little River, a watercourse that is part of the Hawkesbury-Nepean catchment, is located in the Southern Highlands region of New South Wales, Australia.

title: Reconquista River
text: The Reconquista River (Spanish, Río Reconquista) is a small river in the province of Buenos Aires, Argentina. Together with the Riachuelo, it is one of the most contaminated watercourses in the country.

title: Susan Island Nature Reserve
text: The Susan Island Nature Reserve is a protected nature reserve containing Susan Island, a river island, that is located in the mouth of the Clarence River, in the Northern Rivers region of New South Wales in eastern Australia. The reserve is situated near . The island and reserve is a rare example of sub tropical lowland rainforest.

title: List of crossings of the Kiskiminetas River
text: This is a complete list of bridges and dams that span the Kiskiminetas River from its confluence at the Conemaugh River and Loyalhanna Creek to its mouth at the Allegheny River.

title: Willamette River
text: The Willamette River ( ) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is long, lying entirely in northwestern Oregon in the United States. Flowing northward between the Oregon Coast Range and the Cascade Range, the river and its tributaries form the Willamette Valley, a basin that contains two-thirds of Oregon's population, including the state capital, Salem, and the state's largest city, Portland, which surrounds the Willamette's mouth at the Columbia.

title: Victoria (Australia)
text: Victoria contains many topographically, geologically and climatically diverse areas, ranging from the wet, temperate climate of Gippsland in the southeast to the snow-covered Victorian alpine areas which rise to almost 2,000 m (6,600 ft), with Mount Bogong the highest peak at 1,986 m (6,516 ft). There are extensive semi-arid plains to the west and northwest. There is an extensive series of river systems in Victoria. Most notable is the Murray River system. Other rivers include: Ovens River, Goulburn River, Patterson River, King River, Campaspe River, Loddon River, Wimmera River, Elgin River, Barwon River, Thomson River, Snowy River, Latrobe River, Yarra River, Maribyrnong River, Mitta River, Hopkins River, Merri River and Kiewa River. The state symbols include the pink heath (state flower), Leadbeater's possum (state animal) and the helmeted honeyeater (state bird).

title: Loimijoki
text: The river Loimijoki is a river in Finland and the longest tributary of the river Kokemäenjoki. The river originates at the lake Pyhäjärvi in Tammela and joins the river Kokemäenjoki in Huittinen. There is a difference in elevation between the source and the mouth of the river, which is long. The river drains a catchment area of . The river has several dams at Forssa, Jokioinen and Loimaa.

title: Visherka River
text: Visherka River: Visherka River () is a river in Perm Krai, Russia, a right tributary of the Kolva River. It is long, and its drainage basin covers . It flows out of lake Chusovskoe in the north of the Cherdynsky District near its border with the Komi Republic. Its mouth is upstream of the uninhabited village of Bogatyryovo, from the mouth of the Kolva River. Its most significant tributaries are:

title: Little Yoho River
text: The Little Yoho River is a short river in British Columbia that flows east from Kiwetinok Lake, which is the highest named lake in Canada, and into the Yoho River about upstream from the mouth of the creek that Takakkaw Falls is on. It is probably best known for Laughing Falls, an impressive plunge just above the river’s mouth that is seen on the way to Twin Falls.

title: Columbia Bar
text: The Columbia Bar, also frequently called the Columbia River Bar, is a system of bars and shoals at the mouth of the Columbia River spanning the U.S. states of Oregon and Washington. The bar is about 3 miles (5 km) wide and 6 miles (10 km) long.

title: Swift River (Teslin Lake)
text: The Swift River is a river that begins in Yukon Territory and flows southwest into British Columbia to its mouth at the east side of Teslin Lake on the Teslin River system. The river drains the uppermost portion of the Cassiar Mountains and in its lower reaches traverses the Nisutlin Plateau, which lies along the east side of Teslin Lake north of the mouth of the Jennings River, which is to the south of the Swift.

title: Mzingwane River
text: The Mzingwane River, formerly known Umzingwane River as or Umzingwani River is a major left-bank tributary of the Limpopo River in Zimbabwe. It rises near Fort Usher, Matobo District, south of Bulawayo and flows into the Limpopo River near Beitbridge, downstream of the mouth of the Shashe River and upstream of the mouth of the Bubye River.

title: Umchabezi River
text: The Umchabezi River is a tributary of the Mzingwane River in Beitbridge District and Gwanda District, Zimbabwe. The main dam on the river is Makado Dam, which supplies water for commercial irrigation.

Answer: Limpopo River