Blackberry River Water Gauges Application

I am looking to have an application that a user can just pick state then the river/creek/stream from the list and it will show the current water levels. Each state has a page like this link [login to view URL] This link is Virginia. So I would want the users to pick a state then it would show the Gauage/height/feet reading and the Discharge reading. Just needs to show these two readings. They automatically update from the USGS site.