Washoe Creek, Perennial stream in Sonoma County, United States

Washoe Creek is a perennial stream in Sonoma County that flows northeast through the Meacham Hills toward Rohnert Park. The water eventually joins the Laguna de Santa Rosa wetland system and supplies part of the broader Russian River basin.

Coast Miwok peoples settled the area by at least 2000 BC, building small villages along Washoe Creek and other local watercourses and gathering from the stream and surrounding uplands. In 1833 the land around present-day Cotati became part of a Mexican land grant. American pioneer Robert Ayres built Washoe House near the creek's headwaters in 1859.

The creek's name comes from the Washoe House, built by pioneer Robert Ayres near its headwaters in 1859. Coast Miwok villages lined these banks from at least 2000 BC, using the stream and uplands for gathering. Today grazing and agriculture have largely replaced the original riparian woodland and Valley Oak savanna.

Washoe Creek runs about 2 mi (3 km) from the Meacham Hills southwest of Cotati to the Laguna de Santa Rosa west of Rohnert Park. It passes under Roblar Road, Stony Point Road, West Sierra Avenue, Madrone Avenue and Gravenstein Highway (State Route 116), then enters an artificial channel. The lower reach is under consideration for a restoration project.

The lower reach, below the Gravenstein Highway crossing where the creek enters an artificial channel, is under consideration for a restoration project. The creek also carries noticeably higher in-stream nitrate concentrations than other watercourses in the Laguna de Santa Rosa watershed.