Pacheco Marsh

Pacheco Marsh is a 122 acre parcel located adjacent to the mouth of Lower Walnut Creek. This site is a partnership of the Muir Heritage Land Trust, EBRPD and the Flood Control District. The partners’ goal for the site is to restore the degraded wetland habitat to historic tidal conditions and maximize habitat values while for allowing for compatible recreational uses.

The Pacheco Marsh Restoration Project is very closely linked to the Lower Walnut Creek Project. They share a floodplain, and have similar habitat types. Any trails along Lower Walnut Creek would logically connect to a trail system or staging area on Pacheco Marsh.  

The Pacheco Marsh parcel historically was part of a broad marshland at the shoreline of Suisun Bay that was nurtured by periodic overflows from Walnut Creek. In more recent times, the Pacheco Marsh has been diked and drained, and then partially filled with dredge spoils. In the 1950s, a large sanitary sewer outfall and access road was constructed down the middle of the parcel, and the parcel at the north end of Pacheco Marsh was used to offload sand mined in the bay. In the 1980s, a 39 lot industrial subdivision was proposed to be built on the marsh which would have obliterated any remaining habitat value.

In the 1990s, the parcel owners defaulted on their property taxes, and in 2001, the parcel was acquired at a tax default sale. Soon afterwards, a feasibility-level restoration plan was prepared by ESA-PWA.  

The partners are excited to restore the habitat of Pacheco Marsh.   Though technically a separate project from Lower Walnut Creek, Pacheco Marsh will nonetheless benefit from the broader Lower Walnut Creek restoration planning effort.