What winter gritting leaves in the yard drains

1 November 2026

By the end of a hard north-east winter, a commercial yard has had a lot of grit spread on it. Every frosty morning someone goes out with a spreader or a shovel, and every thaw washes a little more of that grit, along with salt, mud off tyres and whatever leaves blew in during the autumn gales, towards the nearest gully. Come spring, the drains hold the evidence.

Where the grit goes

A yard gully has a pot at the bottom to catch silt before it reaches the pipe, and that pot fills. Once it is full, sediment moves on into the drain run, settles where the flow slows down, and gradually takes away the space for water. One visible sign is standing water across the yard after a heavy shower. On sites with an oil interceptor, accumulated silt can reduce the space available within its chambers and affect its operation.

Newer drainage, the same problem

Some newer developments use sustainable drainage features: permeable paving, swales, filter drains, basins and underground tanks that help manage storm water. These can also collect sediment and debris. Leaves may block an inlet, while accumulated silt can affect how water passes through a drainage feature. Inspection and maintenance depend on the type of feature and its condition. Whoever looks after the site also needs an accurate record of where the drainage assets are, especially when responsibility has changed since construction.

Cleaning and checking

Jetting and vacuum tankers are among the equipment used for this work. Gully pots may need emptying, pipes may need jetting, and interceptor chambers may need accumulated material removed. Recovered waste needs appropriate handling according to its classification. Afterwards, a flow check can help establish whether water is moving through the cleaned section. A camera survey can provide further information about pipe damage or obstructions.

Industrial Drain Cleaning covers this ground in useful detail, from deposit recovery and interceptors to gullies, SuDS assets, flow checks and the follow-up work, and arranges industrial and commercial drain cleaning for premises of this kind.

Spring and autumn checks

Late spring, after the gritting season, is a useful time to inspect what winter has left behind. Autumn brings another opportunity to look for leaves and accumulated debris before colder weather returns. For a business yard, arranging an inspection around ordinary working hours is considerably easier than dealing with a flooded loading area while deliveries are waiting at the gate.