How to Drain Downspout Water Flow Away from a House

Published On: July 24, 2024

Proper drainage of downspout water is essential to protect your home’s foundation and landscaping from water damage. When rainwater collects near the foundation, it can lead to basement leaks, foundation cracks, and soil erosion. Redirecting downspout water away from the house is a straightforward solution that can prevent these issues. Here’s how you can effectively drain downspout water away from your house:

1. Evaluate Current Drainage

Firstly, assess how your downspouts are currently draining. Are they depositing water close to the foundation or pooling in low-lying areas? Understanding this will help you determine the best course of action for redirecting the water.

2. Choose a Drainage Method
There are several methods you can use to divert downspout water away from your house:

  • Downspout Extensions: Attach extensions to your existing downspouts to direct water further away from the foundation. Extensions come in various lengths and styles to suit your landscaping needs.
  • Splash Blocks: Place splash blocks under the end of each downspout to disperse water and prevent erosion. Ensure the splash blocks slope away from the house to encourage water flow.
  • Gutters and Downspout Piping: Install gutters and downspout piping that lead water to a designated drainage area away from the house. This method is particularly effective for homes with sloped landscapes.

3. Create a Drainage Path

Establish a clear path for the water to follow as it drains away from the downspouts:

  • Grading: Ensure the ground slopes away from the house. This encourages water to flow naturally away from the foundation.
  • Trenching: Dig shallow trenches to direct water away from the downspouts and towards a designated drainage area, such as a dry well or storm drain.

4. Install a Dry Well or French Drain (if needed)

For homes with poor soil drainage or frequent heavy rainfall, consider installing a dry well or French drain:

  • Dry Well: A dry well is a gravel-filled pit that collects and disperses water underground. It’s an effective solution for managing large volumes of water near the house.
  • French Drain: A French drain is a perforated pipe surrounded by gravel and installed underground to redirect water away from the foundation. It’s suitable for homes with significant water drainage issues.

5. Maintenance and Considerations

  • Regular Maintenance: Inspect and clean your gutters and downspouts regularly to prevent clogs that can hinder water flow.
  • Seasonal Adjustments: Adjust your drainage system seasonally. For example, extend downspout extensions further during heavy rain seasons or when snow is melting.
  • Landscaping Considerations: Choose landscaping features that promote water absorption, such as plants with deep roots or mulched areas, to help manage excess water runoff.

By following these steps, you can effectively redirect downspout water away from your house, protecting your foundation and landscaping from potential water damage. Proper drainage not only enhances the longevity of your home but also contributes to a healthier and more resilient outdoor environment.