This app will list river flows and river information for a variety of rivers. This kind of application is mainly useful for recreational river users such as rafters, kayakers and anglers. Other information like access points, rapids and camps can be viewed. Registered users can also select favorite river runs to get a quick glance at river flows they are interested in.
The following water gauges are also available in this app. USGS, CDEC, CANWO and CDWR. This pretty much covers the entire US and most of Canada.
All information is backed by riverbrain.com where all info can be managed, added and updated.