The most frequent and important variations in a water feature is the fountain structure. It does not lay claim to completeness or degree of urgency. It's intention rather is to illustrate various methods of achieving the objective so that the most suitable for the respective case can be selected. The illustrations are for the purpose of guidance only. In view of the complexities of design and construction of water retaining structures, this is best left to the experts. Only they can provide the data and design advices regarding foundations, reinforcement, weathering qualities, frost resistance, material selection etc. The planning of fountain hydraulics and engineering belongs In the hands of the experts and should be left to those who have been trained specifically on fountain and water display design. Incorrect dimensioning for and of the components, conduits, cables etc often have serious consequences which cannot always be corrected later. Thus, for example, selecting the correct pumps and pipe work has a direct influence on the subsequent energy costs. Sensible dimensioning of the fountain basins and water reservoirs has a considerable influence on the regularity and recurring costs of water changing. If this chapter can contribute to the thinking process" and help to eliminate design errors, then we will have achieved our objective. Advantages: Low water depth at the perimeter. Low water volume. System under grate cover. No risk of accidents. More graceful appearance. Well-appointed due to built-in fittings for drainage, overflow and cable entry. Disadvantage: High expenditure for basin, fittings and leads