Work authorised on ponds at golf course in Friern Barnet to increase water storage and reduce risk of flooding in north London

Two ponds at North Middlesex Golf Club in Friern Barnet Lane are to be cleared of silt and enlarged to improve flood management after heavy rainfall.

Water storage capacity along Blacketts Brook, which flows through the golf course and includes the two ponds, is to be increased at a cost of £340,000.

As part of the scheme, which is being funded by the Environment Agency, the two balancing ponds will be widened and de-silted.

A third flood storage basin further downstream, but within the golf course, will also be improved.

Enlargement will enable the ponds to retain more water and ease flooding in north London.

From the golf course, Blacketts Brook, flows through Friary Park and enters a culvert under both Friern Barnet Lane and the main railway line before joining Pymmes Brook.

Pymmes Brook, which flows through East Barnet village and Oak Hill Park, is itself subject to flooding.

This threat increases after Pymmes Brook is joined by tributaries such as Blacketts Brook and where, further south, flooding causes even greater problems in Upper Edmonton and Tottenham.

The two ponds in the golf course form part of a site of importance for nature conservation as they are thought to provide habitat for Palmate newts, which are rare in London.

Friary Park – where the continuation of Blacketts Brook is a popular feature – is also a site of importance for nature conservation.

In another move to improve flood resilience within the Borough of Barnet, the Environment Agency is to carry out an inspection of the Stoney Wood Lake reservoir near Mill Hill Golf Course at a cost of £82,000.

This is considered a high-risk large, raised reservoir. It has a capacity of at least 25,000 cubic metres of water above natural ground level.

The reservoir, formed by a dam constructed of steel sheet piling, impounds natural surface water.

There will now be a survey of 380 metres of sheet piling to assess the structure and identify any corrosion or damage.

Dan Tomlinson, MP for Chipping Barnet, welcomed the investment in the flood alleviation schemes.

“Climate crisis means we are facing greater rainfall and higher flood risk.

“We must do this work now: expanding capacity, ensuring resilience, making our infrastructure fit for the future, because the cost of inaction, waiting until there is a flood, is far greater.”