[8] Kathryn Gustafson, an American landscape artist, said that she had wanted the fountain to be accessible and to reflect Diana's "inclusive" personality.
Their role was to work alongside Gustafson Porter to design the necessary pumping equipment to achieve the desired water effects, this included the construction of scale mock-ups within their Somerset headquarters.
The granite stream bed is from 3 to 6 m (10 to 20 ft) wide, is quite shallow and is laid out on a gently sloping portion of the park, so that water pumped to the top of the oval flows down either side.
One side of the stream bed descends fairly smoothly to the downhill end of the oval with gentle ripples; the other side consists of a variety of steps, rills, curves, and other shapes so that the water plays in interesting ways as it flows to the tranquil pool at the bottom.
This involved work on the drainage, together with laying new hard surfaces on some of the most frequently walked areas of the site and the planting of a special hard-wearing rye grass mix in others.