The average flow from these is 40 gallons (100 litres) per second. From the well pool, the water flows into the moat to discharge over a weir into the River Sheppey.

On the far side of the wells, in front of the Cathedral, there are two more pools. One of these is the holy well of St Andrew. It is hoped that in the near future it will be possible to open this area to visitors for quiet contemplation.

To the east is the Arboretum, planted in 1977 by Bishop John Bickersteth to commemorate the Silver Jubilee of Queen Elizabeth II. Some 27 years on, the trees are maturing and the green canopy has been under-planted with wild flowers.

Visitors are welcome to picnic here.

Plants that are sold in the Palace shop are propagated here.

Alongside the kitchen gardens are the City council allotments. At some time, pipes were laid from the well pool (whose level is higher than the surrounding land) to troughs in the allotments and the gardeners here are able to fill their watering cans from an unfailing supply.

The kitchen garden and allotments are not open to the public.