Confluence RetirementDue to the feedback from stakeholders and our commitment to not adversely impact USGS science activities that Confluence supports, we are extending the migration deadline to January 2023.
NWIS Web Services Snapshot for ArcGIS
United States Geological Survey
Austin , Texas
September 30, 2011
NWIS Web Services Snapshot for ArcGIS
Retrieving a “snapshot” of National Water Information System (NWIS) data into an ArcGIS geodatabase was conceived in 2002 to reduce the steps required to retrieve and analyze NWIS data. The snapshot process was also designed to serve as a learning tool for new or infrequent NWIS users as well as provide direct documentation of the numerous codes commonly found in NWIS data output. More than 22 water science centers have actively utilized the snapshot process for projects, NWIS database administration, basic data analysis, and map production. In addition, at least four well-funded USGS water availability programs have utilized the snapshot to facilitate NWIS data management and analysis (High Plains, Columbia River Plateau , Mississippi Embayment, and the Great Basin ).
New NWIS data distribution methods such as web services and web mapping are evolving, and with them, the NWIS snapshot. Past snapshot development focused on output directly from an NWIS database installation, typically only available to USGS scientists in Water Science Centers. Now, snapshot development focuses on retrieving output from web services. Produced in 2010 and 2011 to leverage USGS investment in streaming data from web services, the NWIS Web Services Snapshot for ArcGIS represents the next generation of data retrieval and management ( Figure 1 ). The newest Snapshot allows instant access to NWIS data from four different web services through ArcGIS, software available to all USGS scientists. The Snapshot database design enables efficient data compilation and preparation which is fundamental and pre-requisite to achieving the USGS Science Strategy vision of integrated ecosystem science based on integrated data.
The NWIS Web Services Geodatabase Snapshot improves retrieval and management of data within a well-defined database ( Figure 2 ). This data was previously only accessible by database experts. A proposed next phase of Snapshot development is now required to keep pace with evolving science needs and state-of-the-art technologies. Now that NWIS data can be quickly and easily retrieved and effectively managed, we propose to update, enhance, support and maintain the software. There will be an increased emphasis on training, outreach and partnership building to raise awareness about the Snapshot tool. In addition to the software package, deliverables include training and information sessions at USGS centers and partner institutions, updated tutorials based on answering real science questions, a public user community website, and published, open source code. By raising awareness and putting the software and source code in as many hands as possible, more data integration, visualization and analysis tools will emerge that build on the output from this project and, ultimately, facilitate integrated ecosystem science.
Figure 1 . Overview of the NWIS Web Services Snapshot for ArcGIS.
Figure 2 . NWIS Web Services Snapshot enables ArcGIS users to retrieve and manage NWIS data. The next phase of work will include publishing the Snapshot code. Feedback will continue to be provided to web services developers regarding application development needs and end user requirements.
Task 1 : Support and maintenance
Task 2: Training, outreach, and awareness
Task 3 : Software enhancements and updates
Task 4: Testing and revision
Task 5: Publish the software and website.
* To be made available on the user community website.
The total estimated project cost is $119,513.