Sand Dam¶
Sand Dams & Civil Works • Est. CapEx: Low-cost / Locally fabricated
Technical Overview¶
A low-tech water harvesting structure built across seasonal rivers in drylands to store water in sand. Communities use the sand as a natural filter to extract clean water year-round.
Key Specifications & Engineering Parameters¶
| Parameter | Specification |
|---|---|
| Category | Sand Dams & Civil Works |
| Capital Cost | Low-cost / Locally fabricated |
| Primary Mechanism | A concrete dam is built across a sandy riverbed; during rains, water flows downstream and sand accumulates behind the dam, storing water in the sand pores. Water is extracted via a pipe or well, naturally filtered by the sand. |
| Target Scale | Household / Village Cluster |
| Standard Lifespan | 10 - 20 Years |
Cross-Reference & Interactive Tools¶
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