Storm & Flood Damage Recovery in Sacramento, CA

Levees keep river water off the street. They do not lower the water table under the grid, and they do not stop a January atmospheric river from filling the floodplain fill. A dry street and a wet crawl is a normal pair here after a winter storm, because those are two different water bodies. Extract the standing water in the crawl; the lasting control is a drain and a discharge that can run while the table is still high.

It removes the drying interval. After a storm, inland air would start pulling moisture out of a crawl or a north wall. Fog keeps the air at saturation for days, so wood stays wet and a small leak keeps feeding the same cavity. The rain puts the water in; the fog keeps it there. Mechanical drying — a closed crawl and a dehumidifier — is what actually pulls it out between January cells.

Surfaces, yes. Assemblies, not always. Water that spread under a slab during an atmospheric river can sit in the fill through the dry months because irrigation and the held-up table never fully drop. The dry season hides the problem more than it cures it. A moisture map of the slab edge in July can still show a winter supply-line loss that never wicked to the surface.