{"thcode":3,"term":{"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\/>]"},"uf":[],"bt":[{"code":525,"name":"hydrographic features","parent":1,"scope":"For natural bodies of water. For constructed waterways, reservoirs, and such, use 'hydrographic structures'."},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[],"rt":[{"code":100,"name":"bays","parent":525,"scope":"Indentations of a coastline or shoreline enclosing a part of a body of water; bodies of water partly surrounded by land. [USGS GNIS Feature Class Definitions <http:\/\/geonames.usgs.gov\/domestic\/feature_class.htm>]"},{"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>]"},{"code":398,"name":"fjords","parent":100,"scope":"Long narrow  glacially-eroded inlets of the sea, U-shaped and steep-walled, generally several hundred meters deep, between high rocky cliffs or slopes along a mountainous coast. [Adapted from Glossary of Geology, 4th ed.]"},{"code":596,"name":"lakes","parent":525,"scope":"Natural inland bodies of standing water, generally of appreciable size, occupying a depression in the Earth's surface. [Adapted from Glossary of Geology, 4th ed.]"},{"code":1236,"name":"wetlands","parent":112,"scope":"Vegetated areas that are inundated or saturated by surface or ground water for a significant part of the year. The vegetation is adapted for life in saturated soil conditions. [USGS Circ 1048]"}]}