In this video, I show you three ways to examine the field measurements of discharge that underpin the continuous timeseries of streamflow you can find on the US Geological Survey (USGS) National Water Information Service (NWIS) website. I show you how to display the measurements on a graph of streamflow, where to see the actual rating curve, and the way to access the tabular data showing individual field measurements. Put together, all of these things should give you a small sense of how hard USGS hydrologic technicians work to produce good quality streamflow data.