Pacific Watershed Associates in coordination with the Bureau of Land Management,  Department of Water Resources and the Colusa and Yolo County Resource Conservation Districts held a multi-day field school in the North Central California region.  The class "Unpaved Roads: Design and Maintenance"" was held February 22nd and 23rd at the Grange Hall in Guinda, California.

Class topics include:

• Proper ditch relief and stream crossing culvert installation, with and without downspouts, flared inlets, trash racks, etc.
• Proper installation of critical rolling dips or measures to eliminate stream diversions
• Classroom and field methods to determine appropriate culvert sizing for peak stream flows, sediment and woody debris in transport
• Proper approaches for addressing potential road fill and landing failures, as well as spoil disposal techniques
• a variety of road bed and ditch drainage approaches.  These include when, where and how to convert insloped and ditched roads to outsloped roads with or without a ditch, when, where and how to construct rolling dips with and without rock, and when, where and how to dispose of berms along roads
• How to properly excavate a stream crossing fill to minimize post excavation erosion and sediment delivery to streams, and
• How to reduce roadbed width on excessively wide segments of road

For more information contact Sheila Pratt at the YCRCD at 530-662-2037 x 117    or  This e-mail address is being protected from spam bots, you need JavaScript enabled to view it

Sponsored by: California Department of Fish and Game Coastal Salmon Recovery Program

For registration forms and more detailed information download the flyer below

Rural Roads workshop Feb 08.pdf