About: http://webisa.webdatacommons.org/124082000

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	I am not sure what lake the OP is located on, but most are man-made by a dam or other structure.
http://www.w3.org/ns/prov#wasQuotedFrom	straightdope.com