Miller Creek is a 7.6 mi stream in eastern Marin County, California, United States. It originates on Big Rock Ridge and empties into San Pablo Bay east of Marinwood. A middle school called Miller Creek Middle School was named after the creek and is home to 6th, 7th, and 8th graders.

History

The name honors James Miller, an Irishman who settled on part of Rancho San Pedro, Santa Margarita y Las Gallinas in 1845.

Watershed and Course

The Miller Creek watershed drains 11.6 sqmi. Miller Creek originates on Big Rock Ridge southwest of the city of Novato. It descends southward to Lucas Valley Road, where it turns eastward into Gallinas Valley, paralleling the road to Miller Creek Road. There it crosses Lucas Valley Road and jogs northward through Marinwood Park before turning east again along the southern edge of Marinwood. It crosses under U.S. Route 101 at milepost 15.35 and flows through channels in McInnes County Park to empty into the west end of San Pablo Bay.

Ecology

In recent years, steelhead trout (Oncorhyncus mykiss) of multiple ages have been identified in Miller Creek. It has been identified by EPA, Marin County Public Works and California Department of Fish and Game for restoration potential for trout because it has high quality connected riparian habitat, minimal barriers to fish passage and no reservoirs.

Habitat and pollution

The California Coastal Commission considers Miller Creek a Critical Coastal Area because it is an impaired water body (listed under Section 303(d) of the U.S. Clean Water Act) which adjoins the San Pablo Bay National Wildlife Refuge. Livestock have grazed on the watershed since the 1800s, causing widening and downcutting of the creek. It continues to carry a heavy load of sediment from grazing activity, and its lower reaches are also impacted by suburban development.

Bridges

Miller Creek is spanned by numerous bridges, including: