Hydr-illogical

The water levels at Collingham Pits are puzzling at times. After no rain and continued pumping on Ferry Lane Farm Pit, the water levels on Main Pit were actually up since yesterday, with the small bits of marginal habitat around the edges of the pit, and parts of the islands, having vanished again. The only thing I can think is that the pumps on FLF Pit ran out of diesel overnight? Anyway, there wasn't much happening birdwise - the Dunlin was still on the Main Pit, and there were 3 Green Sands on FLF Pit. I met Carl, who'd had a fourth Green Sand, and we viewed FLF Pit from a different angle, noting not much more than a single a Little Egret.