The document discusses UK water management and describes two case studies of water storage systems - the London Basin groundwater supply and the Kielder Reservoir in Northumberland. It notes that parts of the UK experienced water shortages in the 1990s due to lower rainfall, higher evaporation and transpiration, and increasing water demand. It provides details on the geology and hydrology of the London Basin aquifer and why it is an important water source. It also describes the construction and multiple uses of the Kielder Reservoir, which stores water from the River Tyne for industrial and domestic use but also generates hydroelectric power and has become a tourism destination.