
Standing water damages your asphalt from below. We install the right drainage system for your flat South LA lot so water moves off and away - not under your pavement or toward your home.

Drainage solutions in Florence-Graham involve reshaping your surface, adding channel drains or catch basins, and routing water through underground pipe to a safe outlet - most residential jobs are completed in one to three days.
Florence-Graham sits on flat terrain in the South Los Angeles basin, where lots have little natural slope and winter storms drop heavy rain fast. When water has nowhere to go, it pools on your driveway and soaks into the ground beneath your asphalt - softening the base and starting a cycle of cracking and sinking that gets worse every storm season.
A drainage system gives water a designed path off your property. If your surface is already showing cracks or low spots from water damage, you may also want to look at grading and excavation to restore the base before any new surface work is done.
If you see standing water on your driveway after a moderate storm, your surface is not moving water the way it should. On a flat Florence-Graham lot, that water has nowhere to go on its own - and the longer it sits, the more damage it does to the base beneath your pavement.
Depressions in asphalt are usually caused by soil underneath softening from repeated water exposure. Once a low spot forms, water collects there every time it rains, making the underlying problem worse with each storm season.
If rain or irrigation water consistently flows toward your foundation, garage door, or side yard rather than away, the grade of your property is working against you. This is a common issue on the flat lots typical of this area and a direct risk to your foundation.
Cracks along the edges of your driveway - especially near where asphalt meets soil - often mean water is getting under the pavement and weakening the base. Left alone, edge cracking spreads inward and eventually forces a full replacement rather than a targeted repair.
Every drainage problem starts with a site assessment - we walk the property, check the existing slope, and trace where the water comes from and where it needs to go. From there we design a system that fits your lot. For many flat Florence-Graham properties, that means combining surface regrading with a collection point. We also handle all the concrete saw-cutting, asphalt removal, and repaving that goes with the drainage work, so you are left with a finished surface - not a patched-up mess.
If your lot needs grading work before drainage hardware goes in, we handle that too - see our grading and excavation service for details. And once drainage is solved, we can add speed bump installation or other surface improvements as a follow-on project.
Best for properties where adding slope is enough to move water toward the street or a natural outlet without underground pipe.
Suits driveways where water collects across the full width - a linear drain set flush with the surface intercepts the flow before it reaches your garage.
Ideal for flat lots where you need a collection point that gathers water from a large area and routes it through underground pipe to an outlet.
Right for properties where water needs to travel a significant distance to reach a safe outlet, including connections to the street or alley.
Florence-Graham sits on the flat coastal plain of the Los Angeles Basin with very little natural elevation change across most lots. Unlike hillside neighborhoods where water runs downhill on its own, flat terrain here means water goes nowhere without a designed path. Add the dense urban coverage - driveways, concrete, and structures fill most lots, leaving almost no permeable ground to absorb rainfall - and nearly all rain becomes runoff that needs somewhere to go. When winter storms arrive hard and fast between November and March, a driveway without drainage can flood in minutes.
The clay-heavy soils under much of South Los Angeles compound the problem. Clay swells when it absorbs water and shrinks as it dries, putting stress on asphalt from below with every wet season. Properties in nearby Huntington Park and South Gate share the same flat terrain and soil conditions, and we see the same drainage issues in those communities every winter. The right drainage system removes water quickly before the clay ever gets saturated, protecting both your pavement and the soil stability beneath it.
We will reply within one business day. We schedule a site visit to walk your property, check the existing slope, and identify where the water is coming from and where it can safely go. Come prepared to show us the problem area - or use a garden hose to demonstrate the flow.
After the assessment you receive a written estimate that explains the proposed solution and where the water will ultimately outlet. We include all costs - excavation, hardware, repaving - so there are no surprises. A good plan addresses the outlet, not just the drain grate.
If your system connects to a public street or storm drain, we handle the permit application and any required inspections. On installation day, we saw-cut existing asphalt, excavate trenches, set drainage hardware, backfill, compact, and repave the disturbed areas to match the surrounding surface.
Before we leave, we walk you through the finished work and confirm how water should now flow. Freshly placed asphalt needs at least 24 hours off-limits to vehicles - longer in warm weather. Keep drain grates clear of leaves heading into each storm season.
Free estimates for Florence-Graham drainage projects. We reply within one business day.
(213) 664-3054Any contractor can set a grate. What separates a drainage specialist is identifying a legal, functional outlet for the water - the street, alley, or a dry well - and building the whole system to reach it. We ask about outlet options on every job before we quote.
Florence-Graham and the surrounding communities are among the flattest terrain in the county. We have solved drainage problems on properties with virtually no natural slope by combining regrading with catch basins and underground pipe. We know what works here specifically.
When drainage connects to the public right-of-way, a permit is required - and California requires licensed contractors to handle the application. We coordinate with the relevant public works authority and make sure the installation is inspected. You get a documented record that protects you if you ever sell the property.
Drainage work means cutting and removing sections of your driveway. We repave those sections as part of the job, compacting and finishing the surface to match what was there before. You get a drainage system and a restored driveway - not a patch that stands out.
When drainage is done right, it is invisible - water just disappears after a storm and your pavement stays dry. That is the standard we hold ourselves to on every job in Florence-Graham.
Add traffic-calming bumps to private driveways or parking areas once your surface drainage is in good shape.
Learn MoreProper site grading is the first step in any drainage plan - we shape the ground so water flows where it should.
Learn MoreFlorence-Graham winter storms move fast - get your drainage system in place now, before the rain arrives and the damage starts.