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Pacific Southwest Region

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Newark Slough Trail is Closed Until 2010

The Newark Slough Trail is a levee that was constructed originally to contain the salt pond that Cargill Salt uses to produce salt. Winds and waves over the years have eroded the levees and it is time for maintenance.

For the past year, Cargill’s wooden-hulled dredge the Mallard II could be seen scooping mud from the salt pond bottom and placing it atop the levee. The levee tops must be replenished periodically with native bay mud to prevent the levees from eroding away. The Mallard II has since departed to complete another levee maintenance project but the evidence that it once resided here remains. Thick, dark, gooey mud is piled on top of the Newark Slough Trail. It will take the mud several years to compact and dry before it can be leveled back into a trail. The trail is expected to reopen in 2010.

. Download a copy of the trail map (pdf file 2.32 MB).


For more information contact:
Don Edwards San Francisco Bay
National Wildlife Refuge
9500 Thornton Ave
Newark, CA 94560
Administrative Offices Phone: 510-792-0222
Visitor Contact Station Phone
: 510-745-8695
or e-mail us at San Francisco Bay NWR Complex

Last updated: March 3, 2009