Lateral 5.5 Regulating Reservoir


SCH Number
Lead Agency
Turlock Irrigation District
Document Title
Lateral 5.5 Regulating Reservoir
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Document Description
Turlock Irrigation District (TID) owns and maintains more than 250 miles of gravity-fed canals and laterals that serve more than 4,500 irrigation customers. The Lateral 5.5 canal, part of TID’s canal system, draws water from the Lateral 5 canal at the intersection of Harding Road and Kilroy Road in Stanislaus County, California and transports it in a meandering path west to farmland south of Harding Road. The Harding Drain is a deeply cut field drain located adjacent to Harding Road beginning west of the intersection with Prairie Flower Road and continuing west to the San Joaquin River levee, discharging to the San Joaquin River. The Harding Drain carries spill water resulting from operational fluctuations in the TID canal system as well as tail water runoff from the surrounding irrigated farmland. This water is currently lost from the TID canal system. Lateral 5.5 comes within 2,000 feet of the Harding Drain between Blaker Road and Morgan Road, where Lateral 5.5 has its upper spillway to the Harding Drain. TID proposes to construct the Lateral 5.5 Regulating Reservoir (proposed project) on a 40-acre property it owns south of and adjacent to the Harding Drain between Central Avenue and Blaker Road. The proposed project would draw water from an existing turnout in the Harding Drain during periods when there is water in the drain and pump that water into the reservoir to be stored and later pumped into Lateral 5.5 for scheduled irrigation usage. In addition, a pipeline for future connection to the City of Turlock’s (City’s or Turlock’s) recycled water pipeline would allow discharge of recycled water into the Lateral 5.5 Regulating Reservoir, upon amendment of the City’s wastewater NPDES permit. Currently, the City sends their treated effluent to the City of Modesto’s (Modesto’s) Jennings Secondary/Tertiary Treatment Facility, a large treated effluent storage reservoir used primarily for agricultural irrigation. Some of that water, along with Modesto's treated effluent, now goes to the Del Puerto Irrigation District via the Delta Mendota Canal. Both Turlock and Modesto have separate wastewater National Pollutant Discharge Elimination System (NPDES) permits for this operation, which have been approved previously. Therefore, Turlock's effluent has not drained to the San Joaquin River for an extensive amount of time, and diverting some of Turlock's effluent to the Lateral 5.5 Regulating Reservoir would not decrease flows to the San Joaquin River.

Contact Information

Phil Govea
Agency Name
Turlock Irrigation District
Job Title
Civil Engineering Department Manager
Contact Types
Lead/Public Agency


Citywide, Countywide
Cross Streets
Central Avenue and Blaker Road
Total Acres
Parcel #

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Fish and Wildlife, Central Region 4 (CDFW), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 10 (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California San Joaquin River Conservancy (SJRC), California State Lands Commission (SLC), Central Valley Flood Protection Board, Delta Protection Commission, Delta Stewardship Council, Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Drinking Water, District 10, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
State Reviewing Agency Comments
California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
Development Types
Water Facilities (Canal Regulating Reservoir)(Type water storage, MGD 50)
Local Actions
Site Plan
Project Issues
Air Quality, Biological Resources, Cultural Resources, Geology/Soils, Greenhouse Gas Emissions


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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