County of San Diego Guidelines for Determining Significance - Hydrology and Water Quality


The California Environmental Quality Act (CEQA) requires public agencies to review the environmental impacts of proposed projects and consider measures to reduce significant adverse environmental effects when required. The Guidelines have been prepared and updated to assist the County of San Diego staff, project applicants, and the public in the review of discretionary projects and environmental documents to determine whether, based on substantial evidence, a project may have a significant effect on hydrology or water quality pursuant to CEQA. The Guidelines do not propose any development. The purpose of the Guidelines is to clarify and standardize analysis in the environmental review process by proving consistent, objective, and predictable evaluation of significant effects for the subject areas of hydrology and water quality. The Guidelines also include two updated CEQA streamlining options during discretionary review allowing for a schematic design for both stormwater and flood review. The options provide the opportunity for project applicants and consultants to reduce the processing time and cost associated with discretionary review. These options will not reduce the quality of PDS review or create shortcuts or loopholes in the permitting process that would impact public safety, quality of life, environmental protection, or limit intended public participation. Final engineering level analysis would be required during the final engineering phase.

Due to the Coronavirus (COVID-19) public health emergency and for the safety of the public and staff, the Planning & Development Services lobbies are temporarily closed to the public. Planning & Development Services is continuing to provide essential services through online services. Please utilize the file links located on this website to view the environmental review documents. If needed, hard copies of the documents referenced on the website are available upon request for viewing at the drop-off counter of 5510 Overland Avenue. For further information regarding the operations of Planning and Development Services, please use the information located at the link below or contact the project manager using the contact information on this website:

Please direct any questions or formal comments to the project contacts below.

Project Contact: Jenna Roady | | (858) 495-5437


Board of Supervisors Meeting Documents:

August 18, 2021 Public Notice

PUBLIC DISCLOSURE PERIOD (January 21, 2021 to February 22, 2021)