Potomology applies knowledge from many areas of the physical and biological sciences and mathematics. The potomologist need not qualifyas a specialist in each of these areas, but he must be able to integrate knowledge from all of them as he pursues his own specialty. The definition is extended to also include knowledge in areas of the social sciences and engineering, essential elements in effective pollution control and wise use of water resources. Furthermore, in application potomology becomes as much an art as a science, tempered by experience and professional judgement. (Velz, 1984)

Velz, C.J., 1984. Applied Stream Sanitation, 2nd Edition. John Wiley & Sons, Inc., New York