Friends of the Mark West Watershed  

FMWW's Mission: 
We are a community dedicated to preserving, protecting, and restoring the Mark West Creek and its watershed as a natural and community resource.

photo of Mark West Creek

Mark West Creek runs through one of the few remaining pristine native areas left in northeast Sonoma County. This land is covered by Oak, Madrone, Redwood and Fir forests. The creek, nestled in the bottom of the canyon, is one of only a few tributaries of the Russian River that still supports a healthy population of endangered steelhead trout.


Mark West Creek is a tributary to the Russian River, located in Sonoma County, California (see Mark West Creek map, page 2). The legal description at the confluence with laguna De Santa Rosa is T8N, R9W, S32. Its location is 38 29'30" N. latitude and 122 53'30" W. longitude. Mark West Creek and its tributaries drain a basin of approximately 40 square miles. Mark West Creek is a fourth order stream and has approximately 27 miles of blue line stream, according to the USGS Camp Meeker, Healdsburg, Sebastopol, and Mark West Springs 7.5 minute quadrangles. Major tributaries include Porter Creek and Humbug Creek both of which are described in separate stream reports. Elevations range from about 40 feet at the mouth of the creek to 1800 feet in the headwaters. The topography is mountainous in the headwaters, becoming a flat valley in the middle section and turning to low hills near the mouth. Most of the stream in the middle section is bordered by cultivated fields and housing developments. Vegetation near the mouth is typical Redwood Forest. The vegetation near the headwaters is characterized by oaks, bays, redwoods, Douglas-fir, maples, madrone, and manzanita.


Friends of the Mark West Watershed • 6985 Saint Helena Road, Santa Rosa, CA 95404
Email • Tel: 707-538-5307 • Fax: 707-595-5322

Friends of the Mark West Watershed is a 501(c)(3) non-profit organization.
Your contribution is tax deductible to the extent allowed by law.
FMWW’s Federal ID number is  81-2838263.

The views expressed on this website reflect those of the submitting writer(s).
They do not necessarily reflect the views or opinions of the Friends of the Mark West Watershed or its members.
The FMWW does not warrant or assume legal liability or responsibility for
the accuracy, completeness, or usefulness of any information disclosed.
FMWW encourages any and all community members and interested persons to attend
our monthly meetings to discuss these watershed issues.