{
  "nhdplus_version": "nhdplus_h",
  "search_type": "example",
  "start_nhdplusid": "12345",
  "start_permanent_identifier": "12345",
  "start_reachcode": "string",
  "start_hydroseq": "string",
  "start_measure": "string",
  "stop_nhdplusid": "12345",
  "stop_permanent_identifier": "12345",
  "stop_reachcode": "string",
  "stop_hydroseq": "string",
  "stop_measure": "string",
  "max_distancekm": "string",
  "max_flowtimeday": "string",
  "return_flowline_details": "string",
  "return_flowline_geometry": "string",
  "known_region": "string"
}