What are the natural factors in construction of dams?

Natural factors in the construction of dams include geological conditions, such as soil type and rock stability, which influence the dam's foundation and design. Hydrology is also crucial, as it determines water flow patterns and potential flood risks. Additionally, environmental considerations, including local wildlife habitats and ecosystem impacts, play a significant role in the planning and construction process. Lastly, seismic activity in the region can affect design requirements to ensure the dam's safety and integrity.