Lichau Creek and a stand of eucalyptus
|- left||Willow Brook|
|- location||7 mi (11 km) north of Petaluma, California|
|- elevation||1,725 ft (526 m)|
|- location||4 mi (6.4 km) northwest of Petaluma, California|
|- elevation||30 ft (9 m) |
|- coordinates||Coordinates: |
|Length||8.9 mi (14 km) |
The original name of the creek is O'Hara Creek and is named after the settler, John O'Hara, who purchased and owned the land through which the creek flows. O'Hara was born in 1833 in County Sligo, Ireland and settled in Penngrove sometime between 1852 and 1857 and died in 1911 at the age of 78 years. The October 26th, 1904 Santa Rosa Republican refers to this creek as O'Hara Creek.
The creek springs from the western side of Sonoma Mountain between Copeland Creek and Lynch Creek. Descending initially to the west, it crosses under Sonoma Mountain Road and passes north of Stony Butte. After crossing East Railroad Avenue and Petaluma Hill Road, it flows under the Northwestern Pacific Railroad tracks. It immediately bends southward and parallels the tracks through Penngrove, crossing Adobe Road and Main Street.
On the northern outskirts of Petaluma, it crosses Ely Road and turns southwestward, crossing Old Redwood Highway, the North McDowell Boulevard Extension, U.S. 101, and Stony Point Road to reach the Petaluma River.
Flora and fauna
At least three bridges span the creek:
- Petaluma Hill Road crosses 0.1 miles (0.2 km) north of Old Redwood Highway on a 49-foot (15 m) concrete continuous tee beam built in 1920 and reconstructed in 1976.
- East Railroad Avenue crosses 0.1 miles (0.2 km) east of Petaluma Hill Road on a 42-foot (13 m) concrete culvert built in 1970.
- Adobe Road crosses 0.08 miles (0.1 km) east of Old Redwood Highway on a 24-foot (7 m) concrete tee beam built in 1929.
- U.S. Geological Survey Geographic Names Information System: Lichau Creek
- "Department of Fish and Game Stream Survey" (PDF). Retrieved 2008-03-19.
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map Archived 2012-04-05 at WebCite, accessed March 9, 2011
- Harris, Ellen M. (1980). Penngrove: A Jigsaw Puzzle of its Past and Present. amazon.com: Self Published. p. 58.
- "National Bridge Inventory Database".