Mappa topografica Rio Dell

The geographer R. S. Holway wrote of the Russian River in his 1917 paper "The Russian River: A Characteristic Stream of the California Coast Ranges". Originally, the Russian River was one of several rivers draining westward from the Mayacamas Mountains through the Mendocino Plateau to the sea, a region lifted…

Altitudine media: 180 m

Sebastopol's elevation is 65 to 250 feet (20 to 76 meters) above sea level. Its downtown is at the intersection of State Route 12 and State Route 116 (Gravenstein Highway), approximately 9 mi (14 km) west of U.S. Route 101.

Altitudine media: 69 m

Altitudine media: 76 m

Altitudine media: 124 m

Graton is located at the southeastern end of Green Valley, on the east bank of the seasonally flooding Atascadero Creek. The elevation ranges from approximately 85 feet (26 m) above Mean Sea Level (MSL) at Atascadero Creek to 213 feet (65 m) MSL at Oak Grove School.

Altitudine media: 50 m

Altitudine media: 40 m

Altitudine media: 52 m

Altitudine media: 178 m

Altitudine media: 16 m

Altitudine media: 145 m

Altitudine media: 28 m

Altitudine media: 131 m

Altitudine media: 25 m

Altitudine media: 490 m

Altitudine media: 90 m

Altitudine media: 223 m

Sebastopol's elevation is 65 to 250 feet (20 to 76 meters) above sea level. Its downtown is at the intersection of State Route 12 and State Route 116 (Gravenstein Highway), approximately 9 mi (14 km) west of U.S. Route 101.

Altitudine media: 48 m

Altitudine media: 131 m