Water features were an important aspect of Victorian landscaping and Olmstead incorporated two for the estate: the Bass Pond created from an old creek-fed millpond and the Lagoon. Each was used for guest recreation like fishing and rowing. To supply water for the estate, Olmstead engineered two reservoirs. One was a spring-fed man-made lake on nearby Busbee Mountain. The other was a man-made, brick-lined reservoir, located behind the statue of Diana in the Vista, at an elevation of approximately 266 feet above the Esplanade.[10]