About: http://webisa.webdatacommons.org/258158513

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	Since 1963, it has held back the Colorado River???s flow, which has reduced flooding and sediment deposit in the Grand Canyon, leading to environmental changes such as reduced beach habitat for plants and animals.
http://www.w3.org/ns/prov#wasQuotedFrom	discoveryeducation.com