Groundwater storage and water security: making better use of our largest reservoir

• Published in: Water science and technology 2005-01, Vol.51 (5), p.141-148
• Main Authors: Tuinhof, A, Olsthoorn, T, Heederik, J P, de Vries, J
• Format: Article
• Language: English
• Subjects: Aquifer management; Aquifers; Arid regions; Arid zones; Climate; Climate change; Climate variability; Conservation of Natural Resources - economics; Contamination; Cost-Benefit Analysis; Dams; Decision making; Disasters; Drought; Greenhouse Effect; Groundwater; Groundwater recharge; Groundwater storage; Rain; Rainfall; Reservoirs; Security; Security Measures; Sedimentation & deposition; Social impact; Soil; Storage capacity; Storage conditions; Supply & demand; Surface water; Underground storage; Variability; Water conservation; Water management; Water Movements; Water security; Water shortages; Water storage; Water supply; Water Supply - standards
• ISSN: 0273-1223; 1996-9732
• DOI: 10.2166/wst.2005.0127

Provision of sufficient storage capacity under growing water demands and increasing climate variability is one the main concerns for water managers in the coming decades. It is expected that 150-300 km3 of additional storage capacity will be needed by 2025 especially in semi-arid and arid regions where changes in climate variability will have most impact on rainfall and drought. Storage of substantial amounts of water can either be above ground, in reservoirs behind dams or underground in aquifers (sub-surface storage). Recharge enhancement through management of aquifer recharge (MAR) and sub-surface storage (SSS) is a known technology and already successfully applied in a number of countries for many years at different scales. MAR-SSS is a flexible and cost-effective means to increase storage capacity both at village level and in modern water management schemes. A dialogue and information exchange between climate experts and water managers can provide an effective contribution to the planning, design and operation of MAR-SSS schemes.