Maintenance

The purpose of this work is to maintain existing storm water facilities by restoring their original design capacity to provide public safety and protection of property. The City must routinely maintain the drainage channels through periodic removal of trash, debris, vegetation and accumulated sediment.

Prior to any maintenance activity, detailed hydrological, biological and cultural studies are conducted to identify:

  1. Where maintenance is needed;
  2. The best method to conduct needed maintenance; and
  3. The specific maintenance protocols that will be used to protect water quality and natural resources.

A detailed Individual Hydrologic and Hydraulic Assessment (IHHA) is performed to determine:

  • The design flood conveyance capacity of the facility,
  • The facility's current conveyance capacity,
  • The sources and quantity of obstruction, such as accumulation of sediment and/or vegetation,
  • The quantity of materials to be removed,
  • The method of removal, and
  • The amount of flood conveyance that will be achieved after maintenance.

An Individual Biological Assessment (IBA) is conducted to quantify the types of vegetation present in the facility and the presence of, and the potential for that vegetation to support threatened or endangered species. The IBA also identifies the mitigation measures needed to ensure that the maintenance does not affect natural resources.

Individual Historic Assessment (IHA) surveys are conducted to identify the presence of archeological resources and the potential of the facility to support cultural resources, and identify mitigation measures needed to ensure that cultural resources are not affected.

Based on the specific results of the hydrological, biological and cultural studies, the Transportation and Stormwater Department's Storm Water Division creates an Individual Maintenance Plan (IMP) that identifies the maintenance method(s) to be used, equipment type, appropriate Best Management Practices (BMP), access locations, staging areas, spoils storage sites, and schedule. In addition, the IMP incorporates relevant maintenance protocols as well as specific mitigation measures identified in the IHHA, IBA and IHA for the activity.  Here is a list of active Substantial Conformance Review (SCR) Submittals:

Chollas Creek (MMP Map 71) Emergency Maintenance SCR Submittal

Nestor Creek Map 134 Emergency Maintenance – 1760 Palm Ave. SCR Submittal

Smythe 130 Emergency Maintenance SCR Submittal

Washington Channel 84 Emergency Maintenance SCR

Nestor Creek Map 134 Emergency Maintenance – 1788 Palm Ave.

Auburn 77 Emergency Maintenance SCR Submittal

Auburn 70 Emergency Maintenance SCR Submittal

Auburn Map 67 and 68 Emergency Maintenance SCR (SCR) Submittal - See more at: https://www.sandiego.gov/node/7721/revisions/37164/view#sthash.3CaHwK6p.dpuf

Auburn 67/68 Emergency Maintenance SCR Submittal

Chollas Creek 91/93 Emergency Maintenance SCR Submittal

Cottonwood Channel Emergency Maintenance SCR Submittal

Jamacha Channel Emergency Maintenance SCR Submittal

Lower Chollas Creek Emergency Channel Maintenance (3343 Webster Avenue - 3356 National Avenue)

Parkside Channel Emergency Maintenance SCR Submittal

Channel Maintenance Prioritization

The Storm Water Division is developing a prioritization plan for future storm water channel maintenance efforts. The plan includes an opportunity for public input regarding the selection of channels to be included in the City's maintenance program in the years ahead. The City will incorporate public concerns and input as part of the selection process along with evaluations of hydrology and potential impacts from flooding.

Provide your input through a brief survey!

Priority Facilities