Frogfruit ground cover. Source
Water issues around a home can develop quietly over time, often beginning in the surrounding landscape. Responsible landscaping strategies such as rain gardens, swales, native plantings, permeable surfaces, and French or surface drains slow runoff, guide water where it can safely drain or absorb, and help reduce erosion and flooding.
The solution to water issues around a home is sometimes pretty simple.
While working as a landscape designer, I designed a French drain for a homeowner whose rear yard consistently directed water toward the back of the house. After re-grading the area slightly and installing the drain, water was intercepted and diverted away from the foundation improving overall drainage.
How Erosion and Flooding Start in the Yard
Prolonged heavy rains combined with bare soil, compacted ground, and sloped terrain create ideal conditions for flooding. Over time, erosion occurs as water moves too quickly across the surface, carrying soil with it, undercutting plant roots, and concentrating runoff in low areas.
According to The Texas Tribune, “Nearly 1.3 million Texas homes are situated in parts of the state susceptible to dangerous floodwaters. A quarter of the state’s land carries some degree of severe flood risk, leaving an estimated 5 million Texans in possible jeopardy.”
Several site conditions make erosion and flooding more likely:
- Bare or sparsely planted soil that offers little resistance to moving water
- Compacted soil that prevents water from soaking into the ground
- Slopes that funnel water downhill and increase water speed and erosive force
- Hardscapes such as driveways, patios, and walkways that shed or “sheet” water quickly
- Dense soils, such as clay or clay-loam soils, that absorb water slowly and encourage runoff rather than infiltration.
Pro Tip: The goal is knowing how to control erosion in your yard by slowing it down, spreading it out, and helping it soak in, regardless of soil type.
Rain Gardens
Rain gardens are shallow, planted areas designed to collect runoff from roofs, driveways, and other paved surfaces. Instead of letting rainwater rush across the lawn and into storm sewers, a rain garden gives the water a place to slow down, soak into the ground, and be naturally filtered by plants, helping replenish groundwater when the soil can absorb it properly.
In addition to managing runoff, rain gardens can be planted with flowers and grasses that attract pollinators like bees and butterflies, turning a drainage solution into a beautiful pollinator garden.
Swales and Berms
By observing how rainwater naturally flows across your property, you can begin to understand its patterns. Because water follows the path of least resistance, grading techniques such as swales and berms can be used to slow runoff, redirect it, and encourage infiltration.
A swale is a shallow, dug-out area that catches and conveys rainwater. A berm is the raised section just below it that helps keep water from moving too quickly. Berms are often built using soil removed from the swale, though they can also be formed with added soil, rocks, or brush.
Together, swales and berms slow, spread, and absorb rainwater where it falls rather than allowing it to wash away. Both features are installed across a slope, not up and down it, so they gently interrupt water as it moves downhill.
Native Trees, Plants, and Turf
Native plant material, including trees, plants, and turf, plays a critical role in erosion control and flood prevention. According to the EPA’s Soak Up the Rain initiative, strategically placed trees and plants can significantly reduce stormwater runoff by slowing, absorbing, and filtering rain where it falls.
Trees
Trees help anchor soil, intercept rainfall with their canopies, and absorb large amounts of water through their root systems. Species such as bald cypress, sycamore, and river birch are well suited to areas that experience periodic flooding.
Native Plants
Many Texas native plants are adaptable to both heavy rainfall and extended dry periods, making them ideal for landscapes that experience seasonal extremes.
- Frogfruit works well as a low-growing ground cover that tolerates saturated soil without rotting and rebounds during dry weather. It spreads to help hold soil in place and attracts butterflies.
- Bushy bluestem is a native grass that grows well in wet conditions and survives drought once established.
- Roughleaf dogwood, a small tree or large shrub, has deep roots that tolerate flooding while still handling dry periods and providing wildlife value.
- Big muhly develops fibrous roots that stabilize soil and performs well in both dry sites and areas that occasionally remain wet.
- Tropical sage adds color and pollinator interest while tolerating brief flooding and continuing to perform through heat and drought.
- Horsetail thrives in consistently moist or variable conditions and can handle standing water, though it is best used where its spreading habit can be managed.
Turf Grasses and Soil Stabilization
A healthy native lawn also plays a role in reducing erosion and managing excess water. Dense turf slows rainwater as it moves across the surface, giving it more time to soak in.
Native and water-tolerant grasses such as buffalograss and tall fescue develop deep root systems that anchor soil and reduce erosion, especially in clay or clay-loam soils common in Texas. On gentle slopes and mowable areas, selecting turf adapted to site conditions helps establish early coverage and long-term soil stability.
If you would like to learn more about native plants that help reduce flooding and erosion, the San Marcos Greenbelt Alliance offers educational resources for homeowners.
Green Roofs, Permeable Pavements, and Rain Barrels
Beyond rain gardens, green roofs, permeable pavement and rain barrels are three more strategies that also focus on slowing, capturing, or absorbing rainwater before it has a chance to rush across your property.
Green Roofs
Green roofs absorb rainfall directly at the roof level, reducing how much water flows off during storms. They function in several ways, including delaying runoff, lowering surface temperatures, and adding pockets of habitat for pollinators especially in more urban or built-up areas.
Permeable Pavements
Permeable pavements are designed to let water pass through driveways, walkways, and patios instead of shedding it across the surface. As rain moves through the pavement, it filters into the soil below, helping reduce puddling, erosion, and pressure on storm drains.
Rain Barrels
Rain barrels connected to downspouts collect roof runoff and store it for later use. This not only reduces the surge of water leaving the roof during heavy rain but also provides a free water source for gardens and landscaping during dry periods.
French Drains and Surface Drains: Targeted Solutions
Some drainage challenges require more direct intervention, particularly where water consistently collects near foundations or hardscaped areas.
French Drains
Manage subsurface water by capturing it in a gravel-filled trench with a perforated pipe and redirecting it to a safer outlet. These are especially useful in dense soils where water moves slowly underground.
Surface Drains
Capture water at ground level on patios, driveways, and walkways, preventing pooling and limiting runoff from spreading into planting beds or toward structures.
When integrated into a broader landscape plan, these systems help landscapes handle water more effectively over time.
Designing Landscapes That Work with Water
Responsible landscaping starts with observation, watching how water moves across a property during and after rainfall. By combining native plants, grading, and permeable materials, homeowners can significantly reduce erosion and flooding risks over time.
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By Harley Grandone
lawnstarter.com
Harley Grandone is a writer and landscape designer. After 20+ years of being a landscape designer, she loves combining writing with her love of the industry. When not writing, she spends her free time having fun with her family.