You should have a good working knowledge of your drainage systems.

"You couldn't even design a drainage system that could take care of it."

Evidence for early agricultural drainage systems was found here, beginning about 9,000 years ago.

Before long, both children are crawling through the drainage system.

The city has had an underground drainage system since 1904.

Our drainage system is just not able to handle that amount of water.

These hills are what separate the two river drainage systems.

Before the 2005 season, a new drainage system was installed on the field.

The rain water drainage system is yet to be developed for whole of the region.

We've more or less pinned it down to coming from the the drainage systems.

The area is under development and government sanctioned with drainage system.

The remains of this house give evidence to a sophisticated drainage system.

Underground drainage system is not yet introduced in the town.

They sometimes form part of an ephemeral river or drainage system.

They agency said it also had no evidence that a drainage system was installed.

What is wrong with the city's drainage system that these corner lakes do not go away?

A contractor had to come out and build a whole new drainage system to carry water away from the house.

Another distinctive feature of the city was the drainage system.

It even has a special drainage system to cut down on rain delays.

In literature, this is sometimes also called a "relief drainage system".

In either case, the installation of drainage systems is not recommended.

He also said the agency had advised the Council in 1994 that a new drainage system would be needed.

The relatively young council took swift action, and by 1895 the town had a new drainage system.

The complete replacement of a drainage system is controlled building work.

After all nails are inserted, a drainage system is put into place.