| Lynch Creek | |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | California |
| Subdivision Type3: | Region |
| Subdivision Name3: | Sonoma County |
| Subdivision Type5: | City |
| Subdivision Name5: | Petaluma, California |
| Source1: | Sonoma Mountain |
| Source1 Location: | 70NaN0 north of Petaluma, California |
| Source1 Coordinates: | 38.3225°N -122.5828°W |
| Source1 Elevation: | 1950feet |
| Mouth: | Petaluma River |
| Mouth Location: | north of Petaluma, California |
| Mouth Coordinates: | 38.2469°N -122.6375°W |
| Mouth Elevation: | 30feet |
Lynch Creek is a 7.1adj=midNaNadj=mid[1] stream in Sonoma County, California, United States which discharges into the Petaluma River.
Lynch Creek rises on the west flank of Sonoma Mountain and descends initially to the west. It flows under Sonoma Mountain Road, then turns southward and roughly parallels Lynch Road for about a mile (2 km). Just north of Adobe Road, it crosses under Sonoma Mountain Road again. After crossing Adobe Road, it flows through Rooster Run Golf Club and enters suburban Petaluma, where it flows southwestward. It crosses Sonoma Mountain Parkway and Maria Drive and follows the western edge of Lucchesi Park to North McDowell Boulevard. From the south side of the Boulevard, it continues southward, passing under U.S. 101 at Sonoma County milepost 5.19 to feed into the Petaluma River near Jess Avenue.
Lynch Creek is spanned by several bridges, including:[2]
Lynch Creek provides habitat for a variety of threatened and endangered species including chinook salmon (Oncorhynchus tshawytscha), steelhead trout (Oncorhyncus mykiss), and the foothill yellow-legged frog (rana boylii).