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Documents and Standards
Documents and Standards
FC District Documents
The following documents and standards were created by the FC District:
Detention Basin Design Guidelines
Rational Method Guidelines
Rational Method Runoff Coefficients
Intensity Duration Frequency Curve Calculations
Junction Loss Coefficient Standard
N-Value Standard
Hydrograph Request Form
Flood Forecast Information - (7532 Handout)
50 Year Plan, Adopted by the Board of Supervisors - March 31, 2009
General Drainage Standards in County Standard Plans
Drainage Area and Zone Map (small file)
(large file)
Document Library
The following documents and standards were created by others and are good references:
Studies
Flood Insurance Study - March 21, 2017 Vol. I
Flood Insurance Study - March 21, 2017 Vol. II
Flood Insurance Study - March 21, 2017 Vol. III
Flood Insurance Study - March 21, 2017 Vol. IV
Flood Insurance Study - March 21, 2017 Vol. V
Federal Highway Administration Documents (FHWA)
HEC05 Hydraulic Charts for the Selection of Highway Culverts
HEC11 Design of Rip Rap Reventment
HEC15 Design of Roadside Channels with Flexible Linings
HEC22 Urban Drainage Design Manual
HDS-5 Hydraulic Design of Highway Culverts
US Army Corps of Engineers
US ACOE LA Method Unit Hydrographs July 1962
Snyder Unit Graph 1938 AUG Article
O
ther Standards and References
The FC District is currently reviewing its standards and comparing them to the following similar standards:
Orange County Hydrology Manual
Riverside County Hydrology Manual - Complete
(
RC website
)
San Bernardino County Hydrology Manual
(PDF 9.6 MB)
Sacramento County Hydrology Manual
Resources
Expenditure Policy
Drainage Area Credit and Reimbursement Policy
Watershed Day at the Capitol 2018
Winter Storm Preparedness
Sandbags
Available Soil
CCMaps
Documents and Standards
FAQs
Floodplain Program
Hydrograph Standards
Hydrology Standards
One Water Brochure
Walnut Creek Watershed Council Achievement Report
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