Documents and Standards
FC District Documents
The following documents and standards were created by the FC District:
- Expenditure Policy - June 21, 2005 (PDF)
- Detention Basin Design Guidelines (PDF)
- Rational Method Guidelines (PDF)
- Rational Method Runoff Coefficients (PDF)
- Intensity Duration Frequency Curve Calculations (PDF)
- Junction Loss Coefficient Standard (PDF)
- N-Value Standard (PDF)
- Hydrograph Request Form (PDF)
- Flood Forecast Information - (7532 Handout (PDF))
- 50 Year Plan, Adopted by the Board of Supervisors - March 31, 2009 (PDF)
- General Drainage Standards in County Standard Plans (PDF)
- Drainage Area and Zone Map (small file)(large file) (PDF)
- Contra Costa County Flood Control and Water Conservation District Act (PDF)
- District Brochure (PDF)
- Property Flooding (PDF)
- Drainage Maintenance (PDF)
Document Library
The following documents and standards were created by others and are good references:
Studies
- Flood Insurance Study - March 21, 2017 Vol. I-V (PDF)
- Homeless Encampments in Contra Costa County (PDF)
Federal Highway Administration Documents (FHWA)
- HEC05 Hydraulic Charts for the Selection of Highway Culverts (PDF)
- HEC11 Design of Rip Rap Reventment (PDF)
- HEC15 Design of Roadside Channels with Flexible Linings (PDF)
- HEC22 Urban Drainage Design Manual (PDF)
- HDS-5 Hydraulic Design of Highway Culverts (PDF)
US Army Corps of Engineers
Other Standards and References
The FC District is currently reviewing its standards and comparing them to the following similar standards: