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2-060 -A Site Summary- San Joaquin River, MandevilleNenice Tips Complex 2-060 -A <br /> Thomas Guide Location Latitude N Longitude W <br /> County: San Joaquin SF Bay and Delt 3803.5 121 32 <br /> USGSQuad: Bouldin Island NOAAchart: 18661 SACRAMENTO/SAN JOAQUIN RIVER <br /> Last Page Update: 7/1/1996 <br /> SITE DESCRIPTION: <br /> Site is island tips separated from main islands by construction of the Deep Water Channel from light R6 to light <br /> R58. These include Mandeville Tip and Venice Tip and the many small unnamed channel and berm islands and <br /> surrounding channels. This is a DMRP designated Natural Resource Area with Significant Habitat Values. In <br /> addition to the very rich natural habitat varying from marsh to shrub scrub to riparian, there is a heron rookery <br /> here. These triangular shaped tips were once part of adjacent islands but are now flooded to varying degrees <br /> and partially enclosed with historic levees. Each have marshy margins both inside and out and small associated <br /> islands. The portions facing the channel are not leveed. The neighboring agricultural islands have heavily ripped <br /> levees. <br /> SEASONAL and SPECIAL RESOURCE CONCERN <br /> Rich marsh and riparian areas here have "A" priority all year. Special Status Species occur here: Delta smelt <br /> (FT/SE)and winter-run chinook (F/SE) occur in modest numbers in fall to spring; rare plants. <br /> RESOURCES OF PRIMARY CONCERN <br /> The islands here are very natural, varying from marshy to upland riparian. There is a heron rookery here. The <br /> tips have flooded interiors with channels communicating with the river. The marshy shoreline exposure is <br /> extensive. Aquatic environment supports diverse freshwater community. Protection problems because of <br /> extensive exposure and difficulties presented by expansive surrounding waters. <br /> This is extremely diverse and valuable bird habitat. There is a great blue heron rookery in the trees of Venice <br /> Tip. The black rail (ST) and Swainson's hawk (ST) occur in this area. <br /> Other vertebrates include riverine and marsh species of all kinds. This is probably habitat for western pond turtle <br /> This area has modest occurrence of Delta smelt during fall/winter and a moderate density of winter-run chinook <br /> smolts from mid Oct to June. Juvenile and adult striped bass are typical as are warm water species. <br /> Rare plants are found all through this site. These include California hibiscus, Mason's lilaeopsis, and Suisun <br /> marsh aster. <br /> CULTURAL. HISTORIC, and ARCHEOLOGICAL SENSITIVITIES <br /> Contact the California Dept of Parks and Recreation - Office of Historic Preservation (Eric Allison (916) 653- <br /> 9125), and the Northwest Information Center, (Bryan Much, Sonoma State College (707) 332-1117)for specific <br /> information on historic or cultural resources in this area. <br /> KEY CONTACTS: Trustee(T); Entry/Owner/Access (E); Cultural (C); or Other Assistance(0) <br /> Type Name/ Title Organization Phone <br /> John Henderson F/W Biologist US Fish&Wildlife Service,Environmental Contam (916)414-6595 <br /> Eric Larson CA Dept.of Fish&Wildlife,Bay/Delta (707)944-5528 <br /> E Chris Neudeck Mandeville Island Reclamation District (209)946-0268 <br /> OEL Dab Nomellini President Central Delta Water Agency (209)465-5883 <br /> ADDITIONAL SITE SUMMARY COMMENTS: <br /> ACP 2-SF Bay&Delta 9850.1 -31 October 1,2014 <br />