County of Yolo 2008 Standard Specifications and Details
Click here to download the entire Improvement Standard Document
Due to the size of the document, we have broken down the standards by section. Please feel free to download and save as needed. All files are in PDF format
**If you choose to download information from our website, please note it is your responsibility to check for any amendments to the Specifications and Details.**
The County of Yolo Standard Specifications and Details are subject to change due to State and Federal requirements, so please check this site periodically for updates and or call the Public Works Division at (530) 666-8775 for more information regarding updates.
Yolo County Drainage Manual (Approved February 23, 2010)
The Drainage Manual specifies updated engineering criteria and methodology for drainage design for developments and public facilities in the unincorporated areas of Yolo County, and provides guidelines for stormwater quality treatment to supplement the Yolo County Improvement Standards.
Drainage Manual Complete (PDF)
Precipitation Manual - GIS (ZIP)*
* Please read the "Read Me First" file contained in the ZIP file for information on how to view the GIS files.
Drainage Study Report Guidelines
Drainage Study Report Guidelines - This is a design aid, intended to help consultants and engineers demonstrate compliance with County standards.
Transportation Impact Study Guidelines (Approved February 23, 2010)
Transportation Impact Study Guidelines