The weekly drought map shows no dramatic changes. But more and more, little by little, the upper regions of our biggest rivers are showing very dry or some drought. The Mississippi, Snake, Missouri, Colorado, and Rio Grande are all, at least, very dry. Your'e right Andie. Not looking good for a hot summer ahead. The Ohio, Tennessee, and other larger rivers of the Southeast are currently free of dry conditions. But these rivers lack a snow pack source and will be subject to rapid drying as the summer heat comes on. The Sacramento and west coast rivers are ok..with more moisture expected this spring and backed up by good snowpack.