How to improve backyard drainage?

Lisa12

My yard has poor drainage, with two main low points in the back corners. The rest of the yard slopes down toward the back of the house. I know using an ag pipe is an option, but I’m unsure how to set it up properly or where the water should be diverted. I already have the mains layout from Dial Before You Dig. I’m still in the research stage and would appreciate any suggestions.

EricL

Hello @Lisa12

Welcome to the Bunnings Workshop community. It's sensational to have you join us, and thanks for sharing your question about your backyard drainage.

Your agi-pipe is usually linked to your stormwater pipe. This connection must be carried out by a licensed plumber for safety and compliance. I propose installing the agi-pipe along the edge of the concrete walkway in a French drain style for a high rate of absorbtion. Another option is to install Everhard 3m EasyDRAIN Polymer Grate And Prejoined Channel along the length of the garden and cutting into the concrete towards the low points and extending the drains into those areas. this will redirect the rainwater towards the stormwater drain.

I also suggest having a look at these discussions:

Let me call on our experienced members @Dave-1 and @AlanM52 for their recommendations.

If you need further assistance, please let us know.

Eric

Dave-1

Good Evening @Lisa12

Looking at your photos it seems that you have two low points that are collecting a bunch of stormwater. Does your side path lead to a lower point? At the moment I am thinking the easiest way to solve the buildup of water is with the Everhard drain that @EricL has mentioned. Installed so it goes along the edge of the concrete rear path to the side path and then down past the air con unit and out under the gate to be diffused across your front lawn/garden. I cant really tell if the path slopes down is all.

If the path dosnt slope down then you will potentially need to link up to a stormwater pipe and I think there is one (white) on the rear pathway. As @EricL has said you will need a plumber for that connection, plus there is a fair chance you would have to break up the concrete.

Dave

AlanM52

Hi @Lisa12,

After looking at those photos Lisa you have my full attention and before we talk about drainage and possible solutions let's collect some more info.

How long have you been living there and is that a recent flooding problem maybe related to heavy rainfall(s).

The FIRST photo shows the lay of the land slopes towards the house and even if there was a flooding issue from next door it would not account for that amount of water. I think that's a downpipe on the corner.

I presume the SECOND photo is taken at the front on the same side and wondering what that pipe connection is - looks curved.

On standby...