Marsh Creek 6

/Marsh Creek 6

Marsh Creek 6





Upper Marsh Creek 

Vegetation habitats

Oak woodland and riparian woodland, including Contra Costa manzanita, Mt. Diablo fairy-lantern, and the unusual and fragrant hop tree. 


Protected since 2012 by Save Mount Diablo 


Marsh Creek 6 is located at 3249 Aspara Drive off Marsh Creek Rd close to Marsh Creek 4.  It rises from Marsh Creek up a steep volcanic knoll with dramatic rhyodacite cliffs and rock outcroppings and is habitat for the threatened California red-legged frog and several rare plant species.  The property has amazing views of Mount Diablo and contains a lovely, high-quality 250’ section of the creek. Two houses and carports on the knoll were demolished in 2014, and restoration of natural vegetation is underway. 

Marsh Creek 6, our newest acquisition and second property on a volcanic plug dome, is located east of Clayton just downstream from three of our other properties. Like Marsh Creek-V, the first dome, Marsh Creek 6 is especially bio-diverse partly because it is on a rare volcanic dome with high silica content. Although acquired for its creek segment, the property is rich in resources and in many other ways.

Marsh Creek – VI contains a lovely, high-quality 250 foot section of the Creek, a known habitat for the threatened California red-legged frog, several rare plant species including Contra Costa manzanita, the endemic Mt. Diablo Globe lily and the unusual citrus fragrant hop tree, as well as the uncommon volcanic rock rhyodacite within its 6 acres.

Save Mount Diablo’s properties are closed to the public except by guided tour.


All properties with red have been protected by Save Mount Diablo. Properties that are solid red are crossed by Marsh Creek.