{"thcode":3,"term":{"code":305,"name":"deltas","parent":816,"scope":"Flat plains formed by alluvial deposits at the mouth of a stream. [NIMA GEONet Designation ... Definitions <http:\/\/164.214.2.59\/gns\/html\/desig.html>]"},"uf":[],"bt":[{"code":816,"name":"physiographic features","parent":1,"scope":null},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[],"rt":[{"code":28,"name":"alluvial fans","parent":816,"scope":"Fan-shaped deposits of alluvium (river or stream-bed  sediment)."},{"code":361,"name":"estuaries","parent":525,"scope":"Regions of interaction between rivers and near-shore ocean waters, where tidal action and river flow mix fresh and salt water. These brackish water ecosystems shelter and feed marine life, birds, and wildlife.. [EPA Terms of Environment < http:\/\/www.epa.gov\/OCEPAterms\/>]"}]}