Winterization Tips Pt. 1

How can you plan for the rainy season? It’s getting towards the end of September, and Fall is approaching quickly (tomorrow, September 22nd, to be exact). We want to get our clients thinking about preparing for the rainy season. In this two-part series, we will discuss general planning strategies for getting ready for winter. Whether it’s an El Nino or a mild to moderate winter, these steps should help you prepare your site.

Permit requirements:

The California Construction Stormwater General Permit requires a combination of sediment and erosion control be in place to contain disturbed soil areas during rain events. Regional Water Quality Control Board staff also strong discourage having too much disturbed area open during the rainy season. 

Check out our tips below… 

  • Have rain gauge on-site in an accessible location; not behind locked gate that inspector can’t get to (see our full article on Rain Gauge Tips)
  • Have your SWPPP Binder with reports on-site; in foreman’s truck, trailer or a waterproof box
  • Following up with Tip #2, Electronic reports are okay as long as they are quickly accessible via computer in the job trailer or on foreman’s laptop
  • Make sure SWPPP BMP Drawings are up to date, and modify for winterization plan
  • Check for weather forecast daily
  • Cover as much disturbed soil area as possible 
  • Reduce grading to the minimum
  • Have a mud-free way to get to the jobsite. Our suggestion, rock or pave roads leading to your site
  • Avoid opening up new areas that can’t be finished before the rainy season starts
  • Remove creek diversions and finish waterway work prior to October 15 (or dates set in environmental permits)

Check out Part II of Our Winterization Tips

Have any questions? Get in contact with our team by calling (707) 693-1926 or email

A preview for Winterization Tips Part II– “This risk level 3 fish ladder project (pictured above) has fully stabilized river slopes and a sheet pile cofferdam protecting the waterway from the work area. The slopes have hydroseed, wattle every 10 feet on parallel contours, and jute mesh. A record–level rain brought a record level flooding all the way to the top of the levee completely engulfing the jobsite. The slopes held up even under 20-30’ of fast moving water”. 

To read our Winterization Tips Part II see

Share this post

By |2018-09-27T04:15:35+00:00September 21st, 2018|Stormwater Management|