1. U.S. Department of the Interior U.S. Geological Survey USGS Water Data Exchange Services USGS Office of Water Information June 2009 Nate Booth, Dave Briar

2. USGS Water Data Exchange Efforts  Systems  USGS Water Data for the Nation (NWISWeb)  Instantaneous Data Archive (IDA)  Waterwatch  Web Services  Water-Quality Web Service  Daily Values Web Service (Beta)  Instantaneous Values Web Service (In Development)  Partnerships  CUAHSI  IOOS  USEPA  ACWI

3. USGS Water Data for the Nation (NWISWeb)  Site is acccessible at http://waterdata.usgs.gov/nwishttp://waterdata.usgs.gov/nwis  Site is the public repository for USGS water data maintained by the USGS National Water Information System (NWIS)  Site is designed to help the public find relevant surface water, ground water and water quality data  Most recent 60 days of instantaneous values are available  Data can be downloaded as tab-delimited (RDB) files  Certain site information can be downloaded in Extensible Markup Language (XML)

4. Instantaneous Data Archive (IDA)  Contains historical instantaneous discharge values only  Over time other types of instantaneous data may become available  http://ida.water.usgs.gov http://ida.water.usgs.gov  Not all sites are yet in IDA  Data can be downloaded as tab-delimited (RDB) files  There are gaps between the data in NWISWeb (60 days) and IDA (historical)

5. WaterWatch  Primary designed to show current streamflow conditions on maps  http://water.usgs.gov/waterwatch http://water.usgs.gov/waterwatch  GIS interfaces allow data to be downloaded as  KML – Keyhole Markup Language (Google Earth)  GIS Shapefiles

6. Discrete Water-Quality Web Service  Information is at http://qwwebservices.usgs.gov/ http://qwwebservices.usgs.gov/  A true web service with two protocols  REST – “URL Friendly”  SOAP – Simple Object Access Protocol  Data returned in Water Quality Exchange WQX-Outbound 2.0 XML schema  Both a station and result web service are provided

7. Discrete Water-Quality Web Service  Partnership with USEPA  Common definitions and semantics for key water- quality concepts  Common web services and input parameters  FY 2010 plans:  Data portal to provide single user-friendly interface to both services  Shared technical approaches to web-service implementation

8. USGS  85K surface water sites and 275K wells  4.3M samples  72M results  Output in:  XML  Excel  KML USEPA  Over 350K surface water and well sites  Over 75M results  Output in:  XML What is currently available? Common  Substance Registry System (SRS)  Site types  Chemical groups  XML schema

9. Daily Values Web Service  Information is at http://waterdata.usgs.gov/nwis/?DailyValues_Service _Instructions http://waterdata.usgs.gov/nwis/?DailyValues_Service _Instructions  Provides summarized time-series data for each day of a site’s period of record  Service is considered Beta quality  User provides site, parameter, statistics code, start and end dates  Data is returned in the CUAHSI WaterML 1.0 schema  Both a SOAP and REST interface is available

10. Instantaneous Values Web Service  Expected availability by October 2010  Will provide highly reliable instantaneous time-series values (including stage and discharge) via REST and SOAP protocols  Data will be returned in the CUAHSI WaterML schema  Will support data discovery features  Example: return instantaneous values for all sites for a state, county or watershed

11. Partnership with CUAHSI  USGS has a cooperative agreement with the Consortium of Universities for the Advancement of Hydrologic Science (CUAHSI)  Where appropriate, CUAHSI’s WaterML schemas will be used to serve USGS public water data  Compatibility of USGS web services with the CUAHSI Hydrological Information System (CUAHSI-HIS) is desired, where appropriate

12. Integrated Ocean Observing System  USGS is a contributing partner to the Integrated Ocean Observing System (IOOS)  USGS is helping the IOOS Data Management & Communications Subsystem (IOOS-DMAC)  Details at http://ioos.govhttp://ioos.gov