| | |North Carolina, USA<ref>Carmen, N.B., Hunt, W.F., Andersen, A.R. 2016. Volume Reduction Provided by Eight Residential Disconnected Downspouts in Durham, North Carolina. Journal of Environmental Engineering. 142(10): 05016002. https://ascelibrary.org/doi/10.1061/%28ASCE%29EE.1943-7870.0001107</ref> |