ABSTRACT
The quality and quantity of surface water depend on a combination of climatic and geological factors. The recent pattern of rainfall, for example, is less important in enclosed water bodies, such as lakes and reservoirs, where water is collected over a long period and stored. However, in rivers and streams where the water is in a dynamic state of constant movement, the volume of water is very much dependent on the preceding weather conditions. The quality of drinking water depends largely on the natural geology, as well as the management and protection of water resources ( Section 11.1 ).
