When Backyard Flooding Threatens Your House…

Just one inch of rain deposits over 600 gallons of water into an average-sized backyard. If it soaks into the ground or drains away properly—no problem. However, if not, a flooded backyard can be an ongoing source of water damage to your house every time it rains. Standing water around the perimeter can seep beneath the foundation, causing the soil to subside and the foundation to crack. Water from a flooded backyard may also inundate the basement. Soil that is deeply saturated due to flooding also remains continuously wet even between rains, deteriorating basement walls and floor.

Here are some ways to get the upper hand on backyard flooding:

Divert Water

Grading the landscape can help move water away from your backyard and house.

  • Make sure that the grade of the soil around the immediate perimeter of the house slopes away to keep water from accumulating near the structure. The slope should decline at least one inch per foot to adequately move water away.
  • If standing water accumulates in the yard, the contour of the land can be graded to create a swale—a gentle depression that redirects the flow of water to an area of the yard with better drainage, such as a bed of rocks or a garden.

Extend Gutter Discharge

Standard gutter downspout extensions often don’t discharge water far enough from the house to prevent seepage back under the structure. During the rainy season, flexible roll-out plastic extensions up to 50 feet long that can be readily installed and removed are helpful to relocate roof runoff further out into areas of the yard where it will not pool and cause flooding.

Install A French Drain

In areas of the backyard where soil remains saturated causing chronic poor drainage and flooding, a french drain offers a solution to relocate accumulating groundwater. Installed in a gravel-filled trench topped with soil, the french drain consists of a perforated plastic pipe that collects accumulating groundwater. The pipe extends to another area of the property, continuously conveying collected water further away from the house and dispersing it underground.

Tags: , ,

Return to the Blog Home Page