4Quinn, Billy, and Nigel Malcolm. "Teltown Impact Assessment." Eirgrid Northeast Projects. Moore Archaeological and Environmental Services Ltd., Oct. 2009. Web. 9 July 2012. <http://www.eirgridnortheastprojects.com/media/14.8%20Telltown%20Impact%20Assessment%20Report.pdf>.
Of the artificial lakes, O'Donovan wrote, "The tradition in the Country is that the loughs were formed by an old race of men called the Firvolg, but for what purpose they know not, unless it was for watering their cattle." O'Donovan noted that one of these lakes was known as "Dubh-Ioch," another use of "dubh," (black) which may have originated in the site's connection to Crom Dubh, the "Black Crooked One," a pagan fertility god later demonized by Christianity.