World Commission on Dams website:Archived 1 July 2007 at the Wayback Machine "Case Study – Kariba Dam-Zambezi River Basin" Annex 13 & 14 Victoria Falls Mean Monthly Flows. Website accessed 1 March 2007. This website gives mean monthly flow rates in cubic metres per second (i.e., the total volume of water passing in each calendar month divided by the number of seconds in the month), the standard measure used in hydrology to indicate seasonal variation in flow.
World Commission on Dams website:Archived 1 July 2007 at the Wayback Machine "Case Study – Kariba Dam-Zambezi River Basin" Annex 13 & 14 Victoria Falls Mean Monthly Flows. Website accessed 1 March 2007. This website gives mean monthly flow rates in cubic metres per second (i.e., the total volume of water passing in each calendar month divided by the number of seconds in the month), the standard measure used in hydrology to indicate seasonal variation in flow.
world-waterfalls.com
"Niagara Falls". World Waterfall Database. Archived from the original on 1 December 2010. Retrieved 2 December 2010.
"Victoria Falls". World Waterfall Database. Archived from the original on 1 December 2010. Retrieved 2 December 2010.