Not much is known about the insects that frequent the surrounds of the reservoirs. However, due to the abundance of wild-flowers there is likely to be a diverse array. The group that has been studied most are butterflies, and in recent years the following species have been recorded:

Small Skipper Peacock
Large White Speckled Wood
Orange-tip Gatekeeper
Common Blue Brimstone
Small Tortoiseshell Green-veined White
Silver-washed Fritillary Small Copper
Marbled White Painted Lady
Clouded Yellow Comma
Large Skipper Wall Brown
Small White Meadow Brown
Purple Hairstreak Holly blue
Red Admiral