The National Map. USGS_Gage. WRIR. Waterwatch-Realtime Q. States Reg. Eqns. How streamflow is measured: USGS Water Science. The USGS Water Science School A Beta version of the new USGS website has been released for public comment.Use the "Feedback" button at bottom of every Beta page to tell us what you think.
Printer-friendly version of this complete article (PDF). If you're a teenager, I imagine your favorite activity is to sit with your parents on a quiet river bank, drink your glass of lemonade, and ponder the complexities of life. Probably the first question you ask is "How much water is flowing in this river? " You've come to the right place for an answer.