Napa Sonoma Marshes Wildlife Area: Camp 2 Unit

This subproject of the San Pablo Bay NAWCA Project enhanced 608 acres of palustrine emergent wetlands and associated uplands at the Camp 2 Unit. This area is owned and managed by the California Department of Fish and Game (DFG) as part of the Napa-Sonoma Marshes Wildlife Area. Ducks Unlimited (DU) personnel conducted a topographic survey and began engineering design and permitting activities in 2000. The design included levee construction, pond bottom excavation and instalation of a new well to be used to create permanent freshwater wetlands. In 2003, the major earthwork components were completed, water control structures were installed and the well was drilled.

The Camp 2 Unit before....

The project had several interesting components. DU engineers designed the ponds for two operating levels: a full winter level, which encompasses the entire area inside the pond’s levees, and a lower year-round level managed as a permanent pond. The lower pond level consists of a deep area with channels extending throughout the seasonal pond that collects and concentrates water as the pond level drops. DFG maintains the pond throughout the summer not only to provide waterfowl brood rearing habitat, but also to maintain mosquito fish to prevent mosquito growth. The fish have the ability to navigate the channels and aid in mosquito abatement throughout the area.

The Camp 2 Unit after project improvements.

Additional costs for earthwork activities were incurred during the project, and California Coastal Conservancy provided partner funding to cover the added expenses. Final construction activities were completed during fall of 2004.