Mapas topográficos Washington County

Altitude média: 61 m

The drainage area of the river is approximately 712 square miles (1,840 km2) with 27 creeks feeding into the Tualatin. Its watershed is 15 percent urbanized, 35 percent agricultural, and 50 percent forested. The river drops 1,800 feet (550 m) in elevation during its first 12 miles (19 km) and then only an…

Altitude média: 117 m

Altitude média: 128 m

Altitude média: 146 m

Altitude média: 55 m

Altitude média: 94 m

Altitude média: 128 m

Altitude média: 70 m

Altitude média: 75 m

Altitude média: 68 m

Altitude média: 49 m

Altitude média: 66 m

Altitude média: 70 m

Beaverton covers a total area of 19.7 square miles (51 km2), all of it land except for small creeks, ponds, and lakes. The city is located along the eastern edge of the Tualatin Valley just west of the Tualatin Mountains. It is bordered by Portland to the east, Hillsboro to the west, and Tigard to the south.…

Altitude média: 106 m

Altitude média: 113 m

Altitude média: 56 m

Altitude média: 83 m

Hillsboro is located at 45°31′N 122°59′W / 45.517°N 122.983°W / 45.517; -122.983 (Hillsboro, Oregon). The United States Census Bureau reports the city has a total area of 21.6 square miles (55.9 km2), all of which is land. In 2013, Hillsboro itself reported an area of 23.88 square miles…

Altitude média: 53 m

Altitude média: 51 m

Altitude média: 70 m