San Diego Creek Water Rights Change Petition Project


SCH Number
Lead Agency
Irvine Ranch Water District
Document Title
San Diego Creek Water Rights Change Petition Project
Document Type
NEG - Negative Declaration
Present Land Use
GP: Preservation/Z: 1.3 Conservation Open Space Reserve, 1.4 Preservation
Document Description
The proposed project is a modification of IRWD's SWRCB Permit for Diversion and use of water (permit 20979), which is an appropriate water right to divert water from the San Diego Creek for "Wildlife Enhancement" at the IRWD San Joaquin Marsh. The San Joaquin Marsh is a constructed treatment wetland, and water is discharged back to San Diego Creek with improved water quality. The proposed modifications would include changing the Place of Use to include the entirety of IRWD's San Joaquin Marsh and Wildlife Sanctuary and the neighboring Freshwater Marsh Reserve owned by the UC NRS and increase the Rate of Diversion from 5 cfs to 13.3 cfs. The proposed project would not change the permit's face value of 3,600 AFY.

Contact Information

Jo Ann Corey
Agency Name
Irvine Ranch Water District
Contact Types
Lead/Public Agency


Cross Streets
Carlson Ave/San Diego Creek/Michelson Dr/Riparian View
State Highways
SR 73, I-405
John Wayne
San Diego Creek, San Joaquin Marsh and Wildlife Sanctuary

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB), California State Lands Commission (SLC), Caltrans, Division of Aeronautics, Department of Water Resources, Office of Historic Preservation, Resources Agency, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Rights, California Department of Transportation, District 12 (DOT)
State Reviewing Agency Comments
California Department of Transportation, District 12 (DOT)
Development Types
Other (water rights permit modification)
Local Actions
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Sewer Capacity, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildfire

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, 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.

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