Tacoma's Rainy Season and Your Foundation

Seattle-Tacoma International Airport records 39.34 inches of precipitation in a normal year, with November, December and January the wettest months at about 6.3, 5.7 and 5.8 inches (NOAA 1991-2020). July averages just 0.60 inches.

Before the rains. Clean gutters of needles and moss, extend downspouts, and test the sump pump.

Sloped lots. A curtain drain uphill of the house intercepts water moving through the soil.

Crawl spaces. Look under the house after a big storm. Standing water calls for crawl space drainage before any liner goes in.