 The 1905 Peter Joplin Commercial Block building was the only building to survive the 1913 "Black Friday" fire, making it a remnant of early commercial activity on Ouachita Avenue when all contemporary structures have been destroyed.Lake Hamilton and Lake Catherine are two reservoirs of the Ouachita River south of Hot Springs created for hydroelectric power generation and recreational uses.Both created by Arkansas Power & Light (AP&L), Lake Catherine formed following the construction of Remmel Dam in the 1920s.