Drainage Solutions in Portland, OR
Solve water problems before they damage your property
What are French Drains?
A French drain is a gravel-filled trench containing a perforated pipe that redirects surface water and groundwater away from problem areas. Named after Henry French who popularized the technique in the 1800s, this elegant drainage solution uses gravity to collect water along its entire length and channel it to a safe discharge point.
French drains work by creating a path of least resistance for water. When installed correctly, water naturally flows into the gravel-filled trench, enters the perforated pipe, and is carried away from your foundation, yard, or other areas where water causes problems. It's an invisible solution that works continuously without pumps or maintenance.
In Oregon, French drains are essential tools for managing our abundant rainfall. Whether you're dealing with a soggy yard, water in your basement, or erosion issues, a properly designed French drain system can transform problematic wet areas into usable, dry space while protecting your property's foundation and landscaping.
Why French Drains Matter in Oregon
Understanding why this service matters helps you make informed decisions about your property.
- Oregon Rain Management: With 40+ inches of annual rainfall in the Willamette Valley, water management is essential. French drains handle our persistent rain by continuously moving water away from vulnerable areas.
- Foundation Protection: Water against foundations causes cracks, leaks, and structural damage. French drains intercept groundwater before it reaches your foundation walls, preventing costly repairs.
- Yard Usability: Soggy, waterlogged yards are unusable for months each year. French drains transform swampy areas into dry, functional outdoor space you can enjoy year-round.
- Erosion Prevention: Uncontrolled water flow erodes soil, damages landscaping, and creates channels through your property. French drains control water flow and prevent erosion damage.
Signs You Need French Drain Installation
Recognizing these signs early can save you money and prevent more extensive damage to your property.
- Standing water in your yard after rain
- Soggy, spongy areas that never fully dry
- Water seeping into basement or crawl space
- Erosion channels forming in landscaping
- Mold or mildew smells in lower levels of home
- Foundation cracks appearing or worsening
- Downspouts creating pooling or erosion problems
Best Time for French Drain Installation in Oregon
French drains can be installed year-round in Oregon, but the ideal time is during the drier months from June through September when soil conditions are optimal for trenching and gravel work. However, many homeowners discover drainage problems during our wet season--and that's actually a perfect time for assessment, as we can observe exactly where water collects and flows. We can design your system during winter and install it as soon as conditions allow, or proceed immediately with wet-weather installation techniques if your situation is urgent.
How We Complete Your Project
- 1. Drainage Assessment -- We evaluate water flow patterns, soil conditions, and identify the source of drainage problems.
- 2. Solution Design -- An engineered drainage plan is created with the most effective and cost-efficient approach.
- 3. Excavation & Installation -- Trenches are dug and drainage components are installed with proper grades and filter fabric.
- 4. Backfill & Restoration -- Systems are backfilled, compacted, and the site is restored with topsoil and seed.
Maintaining Your French Drain System
- 1. Keep drain inlet areas clear of leaves and debris
- 2. Inspect discharge points seasonally to ensure free flow
- 3. Avoid planting trees or shrubs directly over drain lines
- 4. Check for settling along the trench line and add gravel if needed
- 5. Flush the system with a hose annually to clear sediment
Frequently Asked Questions
How do I know if I have a drainage problem?
Common signs include standing water after rain, soggy or mushy areas in your yard, water stains or dampness in your basement or crawl space, erosion channels, and mold or mildew growth near your foundation. If you notice any of these issues, a drainage assessment can identify the cause and solution.
What is a French drain and do I need one?
A French drain is a gravel-filled trench with a perforated pipe that collects and redirects subsurface water away from problem areas. It is one of the most effective solutions for yards with high water tables, soggy areas, or water pooling near foundations. We assess your specific situation to determine if a French drain is the best solution.
How much does a drainage system cost?
Costs vary widely based on the type and scope of the solution needed. A simple French drain may cost $2,000-$5,000, while a comprehensive stormwater management system for a commercial property could be $10,000-$50,000+. We provide free assessments and detailed quotes so you know exactly what to expect.
Service Area
We serve Portland and the surrounding Oregon area. Our coverage extends along the I-5 corridor from Eugene to Salem, reaching communities throughout Linn, Benton, Lane, Marion, and Polk counties. View all service areas
Also serving: Beaverton, ,
Ready to Get Started?
Contact us for a free estimate on drainage solutions in Portland.