Most wadi dams in Oman reservoirs have become a major storage source for sediments, including clays, over the last 30 years. According to statistics, wadi dams have clay fractions that sometimes range from 50% to 70% of the sediments located in these dams. Ceramic clays are known to be natural and easily engineered porous-structured materials. The ways dams gather these huge quantities of clays are similar to the original natural ways rivers create clays in other parts of the world. Until now, far too little attention has been paid to the importance of these dams’ clay sediments for industries in general and the ceramics industry in particular. Therefore, the aim of this research project was to evaluate the clays of Wadi Al jizi and Wadi Mistal for ceramics industry applications, especially when used with frits to develop glazes.