The following operations are supported. For a formal definition, please review the Service Description.

• GetHydrologicUnits
  Returns a list of Hydrologic unit names.
• GetKeywords
  Returns a list of HydroSeek keywords.
• GetStationCatalog
  Returns a catalog of measurements within a time frame for a station identified with a StationID. StationID is an internal identifier used in HydroSeek. This function is meant to be used together with GetStations or GetStationsByHU method.
• GetStationCatalogFiltered
  Returns a catalog of measurements within a time frame for a station identified with a StationID that are related to the provided HydroSeek keyword. StationID is an internal identifier used in HydroSeek. This function is meant to be used together with GetStations or GetStationsByHU method.
• GetStations
  Returns a list of stations matching the search criteria. Search criteria involves a geographical bounding box, a time frame and a HydroSeek keyword.
• GetStationsByHU
  Returns a list of stations matching the search criteria. Search criteria involves a hydrologic unit name, a time frame and a HydroSeek keyword.