Flow discharge measurements during floods are of considerable importance. These data are very valuable and particularly difficult to obtain. In addition, such measurements are very expensive and often the lives of the people carrying them out are endangered. The paper describes several methods of discharge measurements during floods. It also presents some practical experience with the following types of measurements as variants of the moving boat method: discharge measurements of the whole flood wave using one or two boats employing only the current meter; and the rising floats of different rise speed.