<http://webisa.webdatacommons.org/246453865>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<usgs.gov> .
<http://webisa.webdatacommons.org/prov/454644808>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/246453865> .
<http://webisa.webdatacommons.org/246453865>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/246453865>	<http://www.w3.org/ns/prov#value>	"When the loss is a small fraction of the measured flows, however, large residual errors can result, masking the actual loss or gain." .