This is despite guidance recommending they be cleared every 10 to 15 years and National Highways having “a statutory duty to ensure that discharges from
Not only are they likely full of sediment, they are probably overfull preventing the ponds from working. Sediments in the water can now run into streams, the water also has less time to cool (the roads heat rain runoff) and that warm water flowing into streams can disrupt the ecosystem as well.
The fact the ponds are full of sediment also reduces their ability to store water in the event of flooding conditions.
Not only are they likely full of sediment, they are probably overfull preventing the ponds from working. Sediments in the water can now run into streams, the water also has less time to cool (the roads heat rain runoff) and that warm water flowing into streams can disrupt the ecosystem as well.
The fact the ponds are full of sediment also reduces their ability to store water in the event of flooding conditions.