"Water enters the garden by a chevron-patterned chadar in the northern gate [hammam]. A large tank behind this gate, now filled from a drilled well, was originally filled from the Jumna [Yamuna River]. The river's course has changed, and it is now some distance from the garden."1
"The restoration of the garden and its hydraulic infrastructure were completed in 2003 by the collaborative efforts of the Archaeological Survey of India and the Aga Khan Trust for Culture under the aegis of the National Culture Fund."2
"Three wells that had been completely filled in and covered over were discovered during the course of the works. Two wells four metres in diameter were found in the sunken area to the east and these were desilted to a depth of 15 metres. They now hold about six metres of standing water. Another well was discovered in the southwest quadrant after an excavation was carried out in its locale."3
1. Elizabeth B Moynihan, Paradise as a Garden in Persia and Mughal India (New York: George Brazillier Inc, 1979), 112.
2. D. Fairchild Ruggles, Islamic Gardens and Landscapes (Philadelphia: The University of Pennsylvania Press, 2008), 209.
3.Aga Khan Historic Cities Programme, Revitalization of the Gardens of Emperor Humayun's Tomb (Geneva: Aga Khan Trust for Culture and Urban Renewal Initiative, 2003), 5.
Burton-Page, John. Indian Islamic Architecture: Forms and Typologies, Sites and Monuments. Edited by Michell George. Leiden: Brill, 2008, 64-7.
Wescoat, J.L. Jr., "Early Water Systems in Mughal India.” In Environmental Design: Journal of the Islamic Environmental Design Research Centre 2, edited by Attilo Petruccioli, 51-7. Rome: Carucci Editions, 1985.
—. "Waterworks and Landscape Design in the Mahtab Bagh." In The Moonlight Garden: New Discoveries at the Taj Mahal, edited by Elizabeth B. Moynihan, 59-78. Washington, D.C.: Arthur M. Sackler Gallery; Seattle: University of Washington Press, 2000.
—. “Water and Waterworks in Garden Archaeology.” In Sourcebook for Garden Archaeology Methods, Techniques, Interpretations and Field Examples, edited by A. Malek, 421-52. Bern: Peter Lang, 2013.