Streamflow displays real-time stream heights and flow data read from USGS river gaging sites. It displays current measurements and provides interactive charts plotting one, seven, 30 or 90 day views.
Streamflow also includes a database of USGS gaging sites, searchable by river name, site description, and site number. The search tool is incremental and updates as you type in search criteria.
Data from the sites you view are kept in a cache, which both reduces the load on USGS servers and makes for quick displays when sites are revisited.