Backyard drainage improvement

[patryk]

Hi. I want to renovate my backyard in Florida and install a fence. It has a seawall and a canal in the back. The first step would be to improve the drainage and prevent erosion. Then I want to flatten the ground a bit, extend the paved patio, add garden beds and lay artificial grass with gravel base.

The red lines are the drainage pipes and the yellow arrows is the slope direction.

Could you please advise if the attached drainage plan is okay or if there's anything you would do different?

Are the perforated corrugated pipes along the seawall fine (socked with gravel geotextile fabric) or would you do solid perforated pipes? If so should I lay the holed facing up or down?

https://imgur.com/a/ksuy4Rm

Thank you

 

[nepoher]

Your plan looks reasonable overall, but I'd consider using solid pipe for the main collection runs and perforated pipe only where you need to intercept groundwater. If you use perforated pipe along the seawall, install it with washed gravel wrapped in geotextile fabric to minimize clogging, and place the perforations facing down. Also, ensure there's a consistent slope toward a proper discharge point and include cleanouts for easier maintenance. Since the property borders a canal, it's also worth checking any local drainage or seawall regulations before starting.