Pull the underground drain which is often a black corrugated plastic pipe away from the end of the downspout.
Drano down gutters.
To unclog a gutter downspout try your easiest options first.
Drano can be useful in unclogging indoor plumbing when goo and hair and who knows what stops up a drain.
Then climb back up and try rinsing the downspout with your garden hose again.
The chemicals in drano don t belong in your gutters or on the ground outside your house either since they can be toxic to plants kids and pets.
Amazingly effective at cleaning out clogged underground gutter drains and downspouts of any length the drain water rooter is cheap to buy easy to use and 100 satisfaction guaranteed.
Walk down the ladder one rung at a time gently knocking on the side of the downspout as you go.
Working your way down from the gutter tap the outside of the downspout with a screwdriver and listen for a dull thud as opposed to hollow ring.
Clogged underground water drains are no match for the drain water rooter.
If you still haven t identified the location of the clog and you have downspouts that descend below ground level then the clog likely is in an underground pipe.
Follow these suggestions to unclog your downspout starting with the easiest options first.
Tap the side of the downspout.
Expose the bottom downspout opening divert the flow away from any landscape drain and then use a garden trowel to reach up into the opening and remove any clogged leaves and debris that could have accumulated there.
This will indicate the location of the clog.
Start by cleaning the bottom downspout opening.