A few times a year, especially at this time, the golf course adjacent to the park transforms into a lake. This area is a flood plane, and when the Welsh Harp reservoir gets too full, its sluice gates are opened and the excess water flows down the river Brent until it reaches the park golf course. IThe water then enters the course and exits further down. This turns the golf course into a temporary lake. Today more like a river, since you can see the flow from the videos below. Meanwhile the placid Coston’s brook transformed into a river, footpaths flooded and the ponds next to the children’s playground overflowed. Very probably more to come!