Marion County地形图

平均海拔：135 米

平均海拔：51 米

平均海拔：473 米

平均海拔：717 米

The water level fluctuates with snow pack, precipitation, and the water consumption of Salem, and surrounding areas. At low pool, it has a surface elevation of 1,450 feet (440 m); at the full pool season—typically May 1 to September 1—it can raise up 119 feet (36 m) to a water elevation of 1,569 feet (478 m).

平均海拔：799 米

平均海拔：758 米

平均海拔：176 米

平均海拔：141 米

平均海拔：44 米

Elevation within the city limits ranges from about 120 to 800 feet (37 to 244 m). Salem contains the volcanic Salem Hills in the south and is sandwiched by the 1,000 ft (300 m) Eola Hills directly to the west and the 600 ft (180 m) Waldo Hills to the east. Northern and eastern Salem are less hilly. South and…

平均海拔：96 米

平均海拔：55 米

Silverton's elevation is between 200 and 250 feet (61 and 76 m) above mean sea level with the steep-sided, heavily-wooded Waldo Hills to the south rising an additional 200 feet (61 m). The agricultural richness of the environs is due to massive and repeated floods from prehistoric Lake Missoula in western…

平均海拔：103 米

平均海拔：53 米

平均海拔：49 米

平均海拔：43 米

平均海拔：558 米