Plastic-Lined Dugout Pond for Rainwater Harvesting¶

Rainwater & Storage • Est. CapEx: Low-cost / Locally fabricated

Technical Overview¶

A low-tech rainwater harvesting method using excavated pits lined with double-layer polyethylene sheets for water storage. Tested in Tajikistan, this system provides affordable storage for household and livestock use in arid regions.

Key Specifications & Engineering Parameters¶

Parameter	Specification
Category	Rainwater & Storage
Capital Cost	Low-cost / Locally fabricated
Primary Mechanism	Rainfall collected from roofs or runoff is directed into a dugout pit (5-10 m³) lined with 0.3-0.8 mm double-layer polyethylene. The liner prevents seepage, storing water for dry periods. Overflow is directed to a secondary pit or drainage.
Target Scale	Household / Village Cluster
Standard Lifespan	10 - 20 Years

Engineering Trade-Offs¶

✅ Advantages⚠️ Limitations

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Cross-Reference & Interactive Tools¶

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