StreamStats version 3, which was no longer being supported, has been fully replaced by StreamStats version 4.  Web services, the batch processing tool, and individual state web pages that linked to StreamStats version 3 are no longer functioning.  Users are asked to use StreamStats version 4 application (https://streamstats.usgs.gov/ss/) and the new web pages (https://www.usgs.gov/streamstats/). The StreamStats Development team has developed a new batch processing tool and most of the web services for StreamStats version 4. The remaining web services will be completed in the near future.