Potential for Sand Dam Location
EO Capability Benefits
Regions with arid climates are particularly well suited for sand and subsurface dams, as these structures help store and preserve water from seasonal rainfall for use during dry periods. Earth Observation can assist in identifying ideal sites for sand dams.
EO Capability Description
A sand dam is a structure built above the ground and integrated into the riverbed of a sand river, where sand accumulates upstream from the dam to enhance groundwater storage capacity. Similarly, a subsurface dam obstructs the flow of groundwater in an aquifer to facilitate water storage below ground level. Sand dams and underground dams are effective methods for storing water underground.
The locations of sand dams can be assessed through spatial analysis of topographical information. This analysis should include data on existing dams, population settlement locations, land cover, and political strategies. Additionally, the catchment outline and catchment analysis of the dam can be determined through spatial analysis.
To evaluate the potential locations for sand dams, a hydrological analysis is conducted to estimate the available water and provide the most accurate sizing of the dam. Ideally, an analysis of water demand and related projections should also be included in the study.
