annually in some areas. Extremes in annual precipitation range from 250 mm (10 inches) in the extreme north, to 1800 mm (71 inches) in extreme southern coastal areas. In the far interior of the country, in the region of Tambacounda, particularly on the border of Mali, temperatures can reach as high as . Examples Climate change Ecology Senegal has a number of vegetation zones: sahel, Sahel-Sudan, Sudan (region), Sudan-Guinea, tropical rainforest, and Guinean mangroves. Most of the southern Casamance arm of the country has been classified by the World Wildlife Fund as part of the Guinean forest-savanna mosaic ecoregion. See also:. Vegetation zones of Senegal 2 Vegetation zones of Senegal 3 CIA World Factbook Terrain: generally low, rolling, plains rising to foothills in the southeast. Natural resources: fish, phosphates, iron ore Land use: arable land: 19.57% permanent crops: 0.28% other: 80.15% (2011) Irrigated land: 1,197 km2 (2003) Total renewable water resources: 38.8 km3 Natural hazards: lowlands seasonally flooded; periodic droughts Environment - current issues: wildlife populations threatened by poaching; deforestation; overgrazing; soil erosion; desertification; overfishing Senegal is a party to several environmental treaties: Comprehensive Test Ban Treaty Convention on Biological Diversity Convention on Fishing and Conservation of Living Resources of the High Seas Convention on the International Trade in Endangered Species of Wild Flora and Fauna International Convention for the Regulation of Whaling Montreal Protocol United Nations Framework Convention on Climate Change United Nations Convention to Combat Desertification United Nations Convention on the Law of the Sea Ramsar Convention 1978 Convention on Ship Pollution Senegal has signed, but not ratified the Convention on Marine Dumping. Extreme points This is a list of the extreme points of Senegal, the points that are farther north, south, east or west than any other location. Northernmost point – unnamed location on the border with Mauritania in the Senegal river immediately north-west of the town of Podor, Saint-Louis Region Easternmost point – unnamed location on the border with Mali near the confluence of the Balin-Ko river and the Falémé River, Kédougou Region Southernmost point – unnamed location on the border with Guinea immediately south of the village of Toile, Kédougou Region Westernmost point - Pointe des Almadies, Cap Vert peninsula, Dakar Region* *Note: this is also the westernmost point of the mainland African continent Gallery References