Turkmenistan
lowest point: Vpadina Akchanaya -81 m; note -
Sarygamysh Koli is a lake in northern Turkmenistan with a water
level that fluctuates above and below the elevation of Vpadina
Akchanaya (the lake has dropped as low as -110 m)
highest point: Gora Ayribaba 3,139 m
Turks and Caicos Islands
lowest point: Caribbean Sea 0 m
highest point: Blue Hills 49 m
Tuvalu
lowest point: Pacific Ocean 0 m
highest point: unnamed location 5 m
Uganda
lowest point: Lake Albert 621 m
highest point: Margherita Peak on Mount Stanley 5,110 m
Ukraine
lowest point: Black Sea 0 m
highest point: Hora Hoverla 2,061 m
United Arab Emirates
lowest point: Persian Gulf 0 m
highest point: Jabal Yibir 1,527 m
United Kingdom
lowest point: The Fens -4 m
highest point: Ben Nevis 1,343 m
United States
lowest point: Death Valley -86 m
highest point: Mount McKinley 6,194 m
Uruguay
lowest point: Atlantic Ocean 0 m
highest point: Cerro Catedral 514 m
Uzbekistan
lowest point: Sariqarnish Kuli -12 m
highest point: Adelunga Toghi 4,301 m