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Standard Plans & Specifications

• OC Public Works Standard Plans
• Caltrans Standard Specifications
• Caltrans Standard Plans
• Caltrans Standard Details

• Document Library
• Drainage Area Management Plan (DAMP)
• Standard Plans

• 2003 DAMP
• Appendix A - Stormwater Program Local Implementation Plan (LIP)
• Appendix B - Training and Outreach Materials
• Appendix C - Program Effectiveness Assessments (PEA)
• Appendix E - Technical Reports

OC Environmental Resources GIS Data Portal

• ALERT Rainfall Totals
• Watersheds
• Monitoring Locations
• Outfall Inventory
• SAR Dry Weather Monitoring Field Data
• ALERT Real-time Hourly Rainfall
• Stormwater Resource Plan
• Watershed Infiltration & Hydromodification Management Plan (WIHMP) Data

Model Water Quality Management Plan (WQMP)

• Santa Ana Regional Water Quality Control Board - North County
• San Diego Regional Water Quality Control Board - South County
• Mapping Portal - WQMP Preparation
• Environmentally Sensitive Areas (ESAs)

Santa Ana RWQCB - North County

• Model WQMP (May 2011)
• Technical Guidance Document (December 2013)
• Development Services Water Quality Requirements

San Diego RWQCB - South County

• Model WQMP (September 2017)
• Technical Guidance Document (September 2017)
• Hydromodification Management Plan (September 2017)
• Development Services Water Quality Requirements
• South Orange County Hydrology Model (SOCHM)
• South Orange County Hydrology Model (SOCHM) Guidance Manual

Best Management Practices (BMP)

• Construction Activities
• New Development/Sigificant Redevelopment
• Industrial/Commercial Businesses Activities
• Residential Activities
• Common Interest Area/Homeowner Assoc. Activities
• Municipal Activity

Watershed Programs

• Stormwater Program
• TMDLs
• Nitrogen and Selenium Management Program (NSMP)
• Environmental Engineering
• Environmental Monitoring
• Municipal Activity

Flood Division

• Hydrology
• 1986 County Hydrology Manual
• 1986 County Hydrology Manual Soils Maps
• 1996 County Hydrology Manual Addendum
• County Hydrology Manual Workbook
• County Highway Design Manual
• County Flood Control Design Manual and Policy Memos
• 1996 County Local Drainage Manual
• Drainage Facilities Mapping

ALL THINGS
STORMWATER