Expert Drain Specialist for Anne Arundel & Baltimore County

Drainage & Water Management

Severn Excavation provides professional drainage solutions across Anne Arundel and Baltimore County. Whether you’re a homeowner looking to stop water pooling with a French drain or a contractor needing a retention pond for a new build, we install systems that solve drainage problems at the source.

Call today to discuss your project and get a tailored estimate.

Call Us (443) 346-4897
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We Repair & Install Subsurface Drainage Systems

Protect Your Property with Professional Drainage Solutions

Drainage problems are common across Anne Arundel and Baltimore County, especially on older lots with poor grading or high water tables. We design and install custom drainage systems that fix the root of the problem, whether it's pooling water, foundation seepage, or soggy lawns.  In some cases, correcting grade is the best option, in others a full drainage system including storm drains, french drains, and dry wells is required.

Most of our systems are subsurface and maintenance-free once installed. In every case, we take precise site measurements, assess slope and runoff, and build a solution that works with your property.

Water Issues We Solve:

  • Water pooling in yards or near foundations

  • Moisture or seepage in basements and crawlspaces

  • Flooded driveways or garages

  • Erosion and washouts after storms

  • Standing water in low-lying parts of your property


If your site needs to be cleared, leveled, or prepped, we’ve got the tools and experience to get it done. To get started, contact us for an excavation estimate or keep scrolling to learn more about the earthwork services we provide.

Drainage Systems We Install:

  • French drains (covered and open)

  • Trench drains (for driveways and garage thresholds)

  • Storm drains

  • Dry Wells

  • Retention ponds

  • Rain gardens

  • Yard drainage

  • Waterproofing systems for basements and foundations

  • Fully integrated drainage solutions that include some or all of the above

A backyard with a trench being dug for a french drain installation and dirt and grass piled beside it. A green tarp covers some of the dirt in the trench. In the background, there are houses, trees, and a small construction machine.

We Offer Full-Service Drainage System Solutions.

Subsurface Drainage Systems & French Drains for Wet Yards and Foundations


Subsurface drainage systems, like French drains, are installed underground to effectively move excess water away from problem areas without changing the look of your yard. By collecting water below the surface, they prevent pooling, soggy ground, and foundation damage. When we install drain systems, we ensure each one is built with precise elevations and grading, ensuring proper flow and long-term reliability.

  • If you have standing water in low spots, soil that stays wet long after rain, or moisture creeping toward your foundation, a subsurface system can correct these issues. French drains are a common solution, using perforated pipe wrapped in fabric and gravel to intercept water before it causes damage.

  • We trench and grade the site, place pipe and aggregate to specification, and set elevations to guarantee flow. Installations are tailored to your property so the system works efficiently for years with minimal maintenance.

French drain installation outside a Maryland home with a trench in the soil and flexible corrugated pipes.

Driveway & Garage Drainage Solutions to Prevent Flooding and Standing Water


Driveways and garages are common problem areas where water collects. Poor grading, compacted soil, or heavy runoff can cause water to flow toward your garage or sit in low driveway spots, leading to cracks, flooding, or erosion. We install trench drains, regrade driveway aprons, and connect drains to dry wells or storm systems to keep water moving away from your property.

  • Most of the time it’s because the ground or apron isn’t sloped correctly, so water flows toward the garage instead of away. Heavy rain, compacted soil, or low spots in the driveway can make it worse. Gutters that dump water too close can also add to the problem. We can usually fix it by regrading, installing trench or channel drains, or tying the runoff into a dry well so the water goes where it should.

A backyard with a house, trees, and a construction area with exposed dirt and pipes for landscaping or drainage work.

Basement Waterproofing & Yard Drainage Systems to Protect Homes in Maryland


Water entering a basement or crawl space is often caused by poor grading, oversaturated soil, or clogged downspouts. Left unchecked, it can lead to cracks, mold, and costly structural damage. We install exterior waterproofing systems and subsurface drains that redirect water away from your home, keeping your foundation dry and secure. For yards, solutions like French drains, dry wells, or rain gardens manage excess water and stop erosion.

  • Depending on your property, we may recommend grading correction, subsurface drains, or exterior waterproofing along the foundation. For every project, we’ll help you evaluate the best solution that addresses the problem at the source.

A backyard with a house under construction, showing trenches for underground piping and a worker handling a black flexible hose, with clear skies in the background.

Proven Drainage Solutions, Backed by Experience.

If you’re dealing with standing water, soggy yards, or moisture creeping into your basement, unfortunately, it won’t go away on its own. At Severn Excavation, we design and install drainage systems that fit your property, protect your foundation, so you can stop worrying about water damage to your property.

Reach out today at (443) 346-4897 to schedule a site assessment and find the right solution for your Anne Arundel County or Baltimore County property.

Why Maryland Property Owners Work With Us

Expert Drainage Work From a Team That Knows the Ground.

Whether you’re a homeowner protecting your property from water damage or a contractor preparing a job site, our team brings expert service, care, and efficiency to every project we take on.

  • Owner-managed projects — Tommy is involved on every job.

  • Veteran-owned and operated with 10+ years’ industry experience.

  • Licensed Maryland Home Improvement Contractor.

  • Certified in Nicolock, NDS Drainage, and ICPI systems.

  • Local knowledge of Severn’s soil characteristics, drainage patterns, and permitting.

  • Affordable financing options for hardscaping projects available through Acorn Financing.

Get To Know Us

Frequently Asked Questions

  • Yes, we can assess and repair or upgrade older or poorly functioning drainage systems. In some cases, we may add components like additional catch basins, correct the slope, or replace damaged pipe to improve performance.

  • If you notice standing water after rain, wet spots that don’t dry, water in your basement, or erosion in your yard, those are signs of drainage issues. We can inspect the area and recommend a solution that fits your needs.

  • We use NDS drain tile and fittings sourced from SiteOne Landscape Supply. Depending on the project, we install either corrugated pipe or smooth PVC pipe. Corrugated pipe is faster to install and more cost-effective, but if root intrusion or precise slope is a concern, we’ll recommend PVC for better durability and long-term performance.

  • We use professional drainage design software and historical weather data to determine minimum, better, and best solutions. This helps us size and place components accurately to handle rainfall events and runoff on your specific property.

  • Most of the system will be buried and out of sight. You may see flush-mounted components like catch basins or outlet points, which are low-profile and designed for long-term access and function without changing the look of your yard.

  • Yes. We assist with necessary permitting and make sure all work meets local code requirements. We are familiar with area regulations around Anne Arundel and Baltimore County and handle compliance as part of the project.

Severn Excavation logo.

Have a Yard Drainage Problem? We Can Help.

Contact us to get a quick estimate or schedule an on-site evaluation. We’ll walk the site, take measurements, and provide a comprehensive plan that fits your property and budget.

Call (443) 346-4897
Get A Quote