Serving Long Beach
Groundwater & Basement Water Intrusion in Long Beach, CA
Basement seepage, failed sumps, and hydrostatic pressure against the foundation are extracted and dried, and the path from the ground is identified so the loss does not repeat. Groundwater and basement seepage are extracted and dried only after the path from the soil is identified — a wall, a slab, a drain, or a failed sump. Drying the interior without stopping that path returns the same water to the same floor.
Frequently asked questions
Did the ground here really sink?
It did, by a substantial amount over the oil field beneath the harbor area, until water was injected to repressurize the formation and largely arrest it. That history matters because ground that dropped is permanently lower relative to the sea than it was built to be. It is one of the more dramatic examples of the effect anywhere.
How much does the tide affect drainage away from the water?
More than distance from the shoreline suggests. Storm drains across the low parts of the city discharge to tidewater, and at high water they cannot discharge at all. Rain arriving in that window backs up in the system several streets inland, where nobody is thinking about the tide.
The river next to the city is entirely concrete.
It is, along essentially its whole length, and it was engineered that way to carry an enormous flow through a built-up basin quickly. That works for the design event. It also means the water arrives at the coast fast and all together rather than spread over days, which concentrates the demand on everything at the lower end.
The same questions, in context, on the Long Beach mold removal page.