Please answer the following question: Information: - Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is HO, meaning that its molecule contains one oxygen and two hydrogen atoms, that are connected by covalent bonds. Water strictly refers to the liquid state of that substance, that prevails at standard ambient temperature and pressure; but it often refers also to its solid state (ice) or its gaseous state (steam or water vapor). It also occurs in nature as snow, glaciers, ice packs and icebergs, clouds, fog, dew, aquifers, and atmospheric humidity. - Ghana, officially the Republic of Ghana is a unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic Ocean, in the subregion of West Africa. Spanning a land mass of 238,535km, Ghana is bordered by the Ivory Coast in the west, Burkina Faso in the north, Togo in the east and the Gulf of Guinea and Atlantic Ocean in the south. "Ghana" means "Warrior King" in the Soninke language. - Accra is the capital and most populous city of Ghana, with an estimated urban population of 2.27million . It is also the capital of the Greater Accra Region and of the Accra Metropolis District, with which it is conterminous. Accra is furthermore the anchor of a larger metropolitan area, the Greater Accra Metropolitan Area (GAMA), which is inhabited by about 4 million people and the thirteenth-largest metropolitan area in Africa. - The Kwahu Plateau is a long plateau in southern Ghana. It consist of the uplifted southern edge of the Volta River Basin. It forms the main watershed of Ghana, separating rivers in the Volta River system from rivers in the western half of Ghana which flows into the Atlantic Ocean(Birim,Pra, Ankobra). The plateau has an average elevation of 1,500 feet and its highest point is Mount Akmawa at 2,586 feet. The plateau is dissected by several valleys and is marked by tall peaks. To the south it borders dense forest country, which it shields from the harmattan winds of the interior. Cacao cultivation has been introduced in the west, through which traditional trade routes lead to the Atlantic; vegetable cultivation is stressed in the eastern sector. The largest and most important towns on the Kwahu Plateau are Wenchi, Mampong, Mpraeso, and Abetifi. References. 1. http://www.britannica.com/EBchecked/topic/325782/Kwahu-Plateau - Lake Volta is a large reservoir contained behind the Akosombo Dam. It is completely within the country of Ghana and has a surface area of . - The Gulf of Guinea is the northeasternmost part of the tropical Atlantic Ocean between Cape Lopez in Gabon, north and west to Cape Three Points in Western region Ghana. The intersection of the Equator and Prime Meridian (zero degrees latitude and longitude) is in the gulf. - The Densu River is a 116 km long river in Ghana rising in the Atewa Range . It flows through an economically important agricultural region , supplies half the drinking water to Ghana 's capital city of Accra , and ends in an ecologically significant wetlands at the edge of the Atlantic Ocean . The Weija Dam is situated on the Densu River . - A dam is a barrier that impounds water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect water or for storage of water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. - The Atewa Range (also called the Atiwa-Atwaredu ranges) is in the Akyem Abuakwa region of southeastern Ghana, near the town of Kibi, and south-west of the Kwahu Plateau which forms the south-west boundary of Lake Volta. The range runs roughly north-south, consisting of steep-sided hills with fairly flat summits. It is the last remains of the Cenozoic peneplain that once covered southern Ghana, and contains ancient bauxitic soils. The range is the site of an important forest reserve, and the source of three major rivers. - Floodgates, also called stop gates, are adjustable gates used to control water flow in flood barriers, reservoir, river, stream, or levee systems. They may be designed to set spillway crest heights in dams, to adjust flow rates in sluices and canals, or they may be designed to stop water flow entirely as part of a levee or storm surge system. Since most of these devices operate by controlling the water surface elevation being stored or routed, they are also known as crest gates. In the case of flood bypass systems, floodgates sometimes are also used to lower the water levels in a main river or canal channels by allowing more water to flow into a flood bypass or detention basin when the main river or canal is approaching a flood stage. - The Atlantic Ocean is the second largest of the world's oceans with a total area of about . It covers approximately 20 percent of the Earth's surface and about 29 percent of its water surface area. It separates the "Old World" from the "New World". - Ivory Coast or Cote d'Ivoire , officially named the Republic of Cote d'Ivoire, is a country located in West Africa. Ivory Coast's political capital is Yamoussoukro, and its economic capital and largest city is the port city of Abidjan. Its bordering countries are Guinea and Liberia in the west, Burkina Faso and Mali in the north, and Ghana in the east. The Gulf of Guinea (Atlantic Ocean) is located south of Ivory Coast. - An ocean (the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere. On Earth, an ocean is one of the major conventional divisions of the World Ocean, which covers almost 71% of its surface. These are, in descending order by area, the Pacific, Atlantic, Indian, Southern (Antarctic), and Arctic Oceans. The word "sea" is often used interchangeably with "ocean" in American English but, strictly speaking, a sea is a body of saline water (generally a division of the world ocean) partly or fully enclosed by land. - Togo, officially the Togolese Republic, is a country in West Africa bordered by Ghana to the west, Benin to the east and Burkina Faso to the north. It extends south to the Gulf of Guinea, where its capital Lome is located. Togo covers , making it one of the smallest countries in Africa, with a population of approximately 7.5 million. Given the paragraphs above, decide what entity has the relation 'mouth of the watercourse' with 'gulf of guinea'.
A:
densu river