Phase 3 of the Reclamation District No. 17 (RD 17) 100 - Year Levee Seepage Area Project (LSAP)

4 Documents in Project


SCH Number
Lead Agency
Reclamation District 17
Document Title
Phase 3 of the Reclamation District No. 17 (RD 17) 100 - Year Levee Seepage Area Project (LSAP)
Document Type
EIR - Draft EIR

Document Description
Phase 3 of the LSAP proposes landside levee improvements along approximately 8.4 miles of the RD 17 levee system in San Joaquin County, California, including portions of the San Joaquin River east levee, portions of the levee along the northerly bank of Walthall Slough, and the Dryland levee extending easterly from Walthall Slough to ~ South Airport Way, to meet applicable Federal and State design recommendations for levees protecting urban areas. Project objectives are to construct seepage berms, setback levees, and slurry cutoff walls where needed to increase the levee's resistance to underseepage and through-seepage; to provide seepage exit gradients of less than 0.5 at the water surface elevation associated with a flood event with a 0.01 annual exceedance probability; and to implement USACE levee vegetation management recommendations.

Contact Information
Dante Nomellini
Reclamation District No. 17
P.O. Box 1461
Stockton, CA 95201-1461



37°46'52"N 121°16'19"W
Stockton Manteca Lathrop
San Joaquin
Cross Streets
Howard, Bowman & Manila Roads, River Isl Pkway, S. Airport Wy, Hwya 120/I-5, Woodward Ave
Parcel #
33 parcels
State Highways
Hwy 120
Union Pacific Rail Road
~ 12
San Joaquin River, Walthall Slough

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Levee Improvements)
Local Action
Other Action Other Action: Levee Modification
Project Issues
Cumulative Effects Landuse Growth Inducing Wetland/Riparian Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Soil Erosion/Compaction/Grading Schools/Universities Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Flood Plain/Flooding Drainage/Absorption Biological Resources Archaeologic-Historic Air Quality Aesthetic/Visual
Reviewing Agencies
Central Valley Flood Protection Board State Lands Commission Regional Water Quality Control Bd., Region 5 (Sacramento) Caltrans, District 10 Native American Heritage Commission California Department of Parks and Recreation California Highway Patrol California Public Utilities Commission Department of Conservation Department of Fish and Wildlife, Region 2 Department of Toxic Substances Control Department of Water Resources Office of Historic Preservation Resources Agency
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