Here is the link. There are thousands of monitoring locations all over the country. You will find everything you need to know about almost any body of water that flows. I use it all the time to monitor the Brzos and Colorado. Checking the site tonight for water conditions is why I won't take my son out on the Brazos tomorrow. You will find stream flow levels, CFS, and some places may record water temperatures and so forth. It is an invaluable aid in determining whether or not the place you want to fish will fit the conditions you desire. http://water.usgs.gov/ Tightlines!!