The Shrinking Lake

With the hottest summer for decades, water levels in the lake have reduced substantially. This has in turn impacted on water quality and has affected some of the wildlife that would typically be enjoying the lake at this time of year.

The Shrinking Lake

A focal point of level reduction can be seen at the lake outlet by the bridge on the inner carriageway. The height of this needed to be raised as part of the flood relief works, leading to the construction of a concrete and stone wall (see above). As can be seen from the image, the water level is nowhere near that outlet; indeed the holding area has almost dried out completely.

The lack of water flow and broken aerating pumps have led to the stagnation of the water in the rivulet beyond, in turn allowing rampant duckweed to return. The Friends are applying for a grant from Southwark’s Cleaner, Greener, Safer Fund to procure an expert assessment of the state of the lake and the best way to improve the lake aeration, planting and biodiversity.